GE C70 Instruction Manual
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GE C70 Instruction Manual

Capacitor bank protection and control system
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See also: Instruction Manual
GE
Digital Energy
C70
Capacitor Bank Protection
and Control System
Instruction Manual
Product version: 7.3x
GE publication code: 1601-9015-AB2 (GEK-119614A)
E83849
LISTED
IND.CONT. EQ.
52TL
1601-9015-AB2
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Summary of Contents for GE C70

  • Page 1 Digital Energy Capacitor Bank Protection and Control System Instruction Manual Product version: 7.3x GE publication code: 1601-9015-AB2 (GEK-119614A) E83849 LISTED IND.CONT. EQ. 52TL 1601-9015-AB2...
  • Page 2 The contents of this manual are the property of GE Multilin Inc. This documentation is furnished on license and may not be reproduced in whole or in part without the permission of GE Multilin. The content of this manual is for informational use only and is subject to change without notice.

  • Page 3: Table Of Contents

    2.5.14 Maintenance...........................2-33 3 INSTALLATION Unpack and inspect ..................3-1 Panel cutouts ....................3-2 3.2.1 Horizontal units ........................3-2 3.2.2 Vertical units..........................3-3 3.2.3 Rear terminal layout ......................3-8 Wiring ......................... 3-9 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 4 Faceplate ..........................4-15 4.2.7 LED indicators........................4-17 4.2.8 Custom LED labeling ......................4-20 4.2.9 Breaker control ........................4-25 4.2.10 Change passwords ......................4-26 4.2.11 Invalid password entry...................... 4-27 Logic diagrams ....................4-28 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 5 5.7.7 Breaker failure (ANSI 50BF) ...................5-191 5.7.8 Voltage elements.......................5-200 Control elements ..................5-217 5.8.1 Overview..........................5-217 5.8.2 Trip bus...........................5-217 5.8.3 Setting groups........................5-219 5.8.4 Selector switch ........................5-220 5.8.5 Time of day timers ......................5-227 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 6 Tracking frequency ......................6-19 6.3.6 FlexElements .......................... 6-19 6.3.7 RxGOOSE analogs........................ 6-19 6.3.8 Transducer inputs/outputs....................6-20 Records......................6-20 6.4.1 User-programmable fault reports ................6-20 6.4.2 Event records......................... 6-20 6.4.3 Oscillography ......................... 6-21 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 7 Bank phase overvoltage (ANSI 59B) ................9-1 9.1.3 Voltage differential (ANSI 87V) ..................9-3 9.1.4 Compensated bank neutral voltage unbalance (ANSI 59NU) ......9-7 9.1.5 Phase current unbalance (ANSI 60P)................9-10 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 8 10.9 Storage ......................10-13 10.10Disposal......................10-13 A FLEXANALOG A.1 FlexAnalog items .....................A-1 OPERANDS B RADIUS SERVER B.1 RADIUS server configuration .................B-1 CONFIGURATION C MISCELLANEOUS C.1 Warranty ......................C-1 C.2 Revision history ....................C-1 ABBREVIATIONS INDEX viii C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 9: Introduction

    Ensure that the control power applied to the device, the AC current, and voltage input match the ratings specified on the relay nameplate. Do not apply current or voltage in excess of the specified limits. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 10: For Further Assistance

    Worldwide telephone: +1 905 927 7070 Europe/Middle East/Africa telephone: +34 94 485 88 54 North America toll-free: 1 800 547 8629 Fax: +1 905 927 5098 Worldwide e-mail: [email protected] Europe e-mail: [email protected] Website: http://www.gedigitalenergy.com/multilin C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 11: Product Description

    2.1 Product description The C70 Capacitor Bank Protection and Control System is part of the Universal Relay (UR) series of products. It is a microprocessor-based relay for protection and control of small, medium, and large three-phase capacitor banks. The relay can be ordered with up to three current transformer/voltage transformer (CT/VT) modules, allowing for flexible application in variety of bank configurations.
  • Page 12 Modbus/TCP, TFTP, and PTP (according to IEEE Std. 1588-2008 or IEC 61588), and it allows access to the relay via any standard web browser (C70 web pages). The IEC 60870-5-104 protocol is supported on the Ethernet port. The Ethernet port also supports the Parallel Redundancy Protocol (PRP) of IEC 62439-3 (clause 4, 2012) when purchased as an option.

  • Page 13: Security

    Password security — Basic security present by default • EnerVista security — Role-based access to various EnerVista software screens and configuration elements. The feature is present by default in the EnerVista software. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 14 The C70 supports password entry from a local or remote connection. Local access is defined as any access to settings or commands via the faceplate interface. This includes both keypad entry and the through the faceplate RS232 port. Remote access is defined as any access to settings or commands via any rear communications port.
  • Page 15 Command Authorizes Default role except for menu writing CyberSentry Security Device Definition Settings |---------- Product Setup |--------------- Security (CyberSentry) |--------------- Supervisory See table notes See table notes |--------------- Display Properties C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 16 |--------------- Direct Integers |---------- Transducer I/O |---------- Testing |---------- Front Panel Labels Designer |---------- Protection Summary Commands |---------- Virtual Inputs |---------- Clear Records |---------- Set Date and Time User Displays Targets C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 17: Order Codes

    The order code is on the product label and indicates the product options applicable. The C70 is available as a 19-inch rack horizontal mount or reduced-size (¾) vertical unit and consists of the following modules: power supply, CPU, CT/VT, contact input and output, transducer input and output, and inter-relay communications.

  • Page 18: Order Codes With Enhanced Ct/Vt Modules

    Enhanced front panel with Turkish display Enhanced front panel with Turkish display and user-programmable pushbuttons Enhanced front panel with German display Enhanced front panel with German display and user-programmable pushbuttons C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 19 French display Russian display Chinese display Enhanced front panel with English display Enhanced front panel with French display Enhanced front panel with Russian display Enhanced front panel with Chinese display C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 20: Order Codes With Process Bus Modules

    1300 nm, multimode, LED, 2 Channels G.703, 2 Channels 7W RS422, 2 Channels 2.3.2 Order codes with process bus modules Table 2-6: C70 order codes for horizontal units with process bus - * ** - * * * - F **...
  • Page 21 820 nm, multimode, LED, 2 Channels 1300 nm, multimode, LED, 2 Channels G.703, 2 Channels 7W RS422, 2 Channels Table 2-7: C70 order codes for reduced-size vertical units with process bus - * ** - * * * - F **...

  • Page 22: Replacement Modules

    Replacement modules can be ordered separately. When ordering a replacement CPU module or faceplate, provide the serial number of your existing unit. Not all replacement modules apply to the C70 relay. The modules specified in the order codes for the C70 are available as replacement modules for the C70.
  • Page 23 4 DCmA inputs, 4 DCmA outputs (only one 5A module is allowed) 8 RTD inputs 4 RTD inputs, 4 DCmA outputs (only one 5D module is allowed) 4 DCmA inputs, 4 RTD inputs 8 DCmA inputs C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 2-13...
  • Page 24 Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, Laser Channel 1 - G.703; Channel 2 - 1300 nm, single-mode Laser G.703, 1 Channel G.703, 2 Channels RS422, 1 Channel RS422, 2 Channels 2-14 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 25: Signal Processing

    The sampling rate is dynamically adjusted to the actual system frequency by an accurate and fast frequency tracking system. The A/D converter has the following ranges of AC signals: Voltages: ± ⋅ 260 V ( ) Eq. 2-1 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 2-15...
  • Page 26 ICD/CID/IID files, and so on), IEEE 1588 (IEEE C37.238 power profile) based time synchronization, CyberSentry (advanced cyber security), the Parallel Redundancy Protocol (PRP), IEC 60870-5-103, and so on. 2-16 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 27: Specifications

    Level accuracy: 0.1 to 2.0 × CT: ±0.5% of reading or ±0.4% of rated (whichever is greater) > 2.0 × CT: ±1.5% of reading > 2.0 × CT rating C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 2-17...
  • Page 28 SPECIFICATIONS CHAPTER 2: PRODUCT DESCRIPTION Curve shapes: IEEE Moderately/Very/Extremely Inverse; IEC (and BS) A/B/C and Short Inverse; GE IAC Inverse, Short/Very/ Extremely Inverse; I t; FlexCurves™ (programmable); Definite Time (0.01 s base curve) Curve multiplier: Time Dial = 0.00 to 600.00 in steps of 0.01...
  • Page 29 0.001 to 5.000 pu of ground input CT in steps of 0.001 Pickup level accuracy: 0.002 pu for <1 pu current and < 20 CT mismatch between phase and neutral CT Hysteresis: 3% or 0.001 pu, whichever is greater C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 2-19...
  • Page 30 Curve timing accuracy at >1.1 pickup: ±3.5% of operate time or ±1 cycle (whichever is greater) from pickup to operate <30 ms at 1.10 pickup at 60 Hz Operate time: 2-20 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 31 < 0.9 × k × I and I / (k × I ) > 1.1 TRIP BUS (TRIP WITHOUT FLEXLOGIC) Number of elements: Number of inputs: Operate time: <2 ms at 60 Hz C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 2-21...

  • Page 32: User-Programmable Elements

    LEDs off, one LED at a time on for 1 s Test sequence 3: all LEDs on, one LED at a time off for 1 s USER-DEFINABLE DISPLAYS Number of displays: 2-22 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 33: Monitoring

    Data storage: in non-volatile memory USER-PROGRAMMABLE FAULT REPORT Number of elements: Pre-fault trigger: any FlexLogic operand Fault trigger: any FlexLogic operand Recorder quantities: 32 (any FlexAnalog value) C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 2-23...

  • Page 34: Metering

    2. f < 0.4pu: as above plus %error of f FREQUENCY Accuracy at V = 0.8 to 1.2 pu: ±0.01 Hz (when voltage signal is used for frequency measurement) 2-24 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 35: Inputs

    0 to –1, 0 to +1, –1 to +1, 0 to 5, 0 to 10, 0 to 20, 4 to 20 (programmable) Input impedance: 379 Ω ±10% Conversion range: –1 to + 20 mA DC Accuracy: ±0.2% of full scale Type: Passive C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 2-25...

  • Page 36: Power Supply

    Ratings: Low range power supply: 8 A / 250 V High range power supply: 4 A / 250 V Interrupting capacity: 100 000 A RMS symmetrical 10 000 A 2-26 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 37: Outputs

    0.5 A 125 V 0.3 A 250 V 0.2 A Operate time: < 8 ms Contact material: silver alloy FAST FORM-C RELAY Make and carry: 0.1 A max. (resistive load) C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 2-27...
  • Page 38 99% Settling time to a step change: 100 ms Isolation: 1.5 kV Driving signal: any FlexAnalog quantity Upper and lower limit for the driving signal: –90 to 90 pu in steps of 0.001 2-28 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 39: Communications

    PARALLEL REDUNDANCY PROTOCOL (PRP) (IEC 62439-3 CLAUSE 4, 2012) Ethernet ports used: 2 and 3 Networks supported: 10/100 Mb Ethernet OTHER TFTP, SFTP, HTTP, IEC 60870-5-104, Ethernet Global Data (EGD), IEEE C37.118 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 2-29...

  • Page 40: Inter-Relay Communications

    –7.6 dBm 1300 nm LED, Multimode –11 dBm 1300 nm ELED, Single mode –14 dBm 1300 nm Laser, Single mode –14 dBm 1550 nm Laser, Single mode –14 dBm 2-30 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 41: Environmental

    95% (non-condensing) at 55°C (as per IEC60068-2-30 variant 1, 6 days) OTHER Altitude: 2000 m (maximum) Pollution degree: Overvoltage category: Ingress protection: IP20 front, IP10 back Noise: 0 dB C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 2-31...

  • Page 42: Type Tests

    Insulation: class 1, Pollution degree: 2, Over voltage cat II 1 Not tested by third party. 2.5.12 Production tests THERMAL Products go through an environmental test based upon an Accepted Quality Level (AQL) sampling process. 2-32 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 43: Approvals

    Normally, cleaning is not required. When dust has accumulated on the faceplate display, wipe with a dry cloth. To avoid deterioration of electrolytic capacitors, power up units that are stored in a de-energized state once per year, for one hour continuously. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 2-33...
  • Page 44 SPECIFICATIONS CHAPTER 2: PRODUCT DESCRIPTION 2-34 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 45: Installation

    For any issues, contact GE Digital Energy as outlined in the For Further Assistance section in chapter 1. Check that you have the latest copy of the C70 Instruction Manual and the UR Series Communications Guide, for the applicable firmware version, at http://gedigitalenergy.com/multilin/manuals/index.htm...

  • Page 46: Panel Cutouts

    Category II, which means installation in an office, laboratory, or testing environment. 3.2.1 Horizontal units The C70 is available as a 19-inch rack horizontal mount unit with a removable faceplate. The faceplate can be specified as either standard or enhanced at the time of ordering. The enhanced faceplate contains additional user-programmable pushbuttons and LED indicators.

  • Page 47: Vertical Units

    3.2.2 Vertical units The C70 is available as a reduced size (¾) vertical mount unit, with a removable faceplate. The faceplate can be specified as either standard or enhanced at the time of ordering. The enhanced faceplate contains additional user-programmable pushbuttons and LED indicators.
  • Page 48 RS232 communications port. The relay is secured to the panel with the use of four screws supplied with the relay. Figure 3-4: Vertical dimensions (enhanced panel) C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 49 CHAPTER 3: INSTALLATION PANEL CUTOUTS Figure 3-5: Vertical and mounting dimensions (standard panel) For side-mounting C70 devices with the enhanced front panel, see the following documents available on the UR DVD and the GE Digital Energy website: • GEK-113180 — UR-Series UR-V Side-Mounting Front Panel Assembly Instructions •...
  • Page 50 PANEL CUTOUTS CHAPTER 3: INSTALLATION For side-mounting C70 devices with the standard front panel, use the following figures. Figure 3-6: Vertical side-mounting installation (standard panel) C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 51 CHAPTER 3: INSTALLATION PANEL CUTOUTS Figure 3-7: Vertical side-mounting rear dimensions (standard panel) C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 52: Rear Terminal Layout

    (nearest to CPU module), indicated by an arrow marker on the terminal block. The figure shows an example of rear terminal assignments. Figure 3-8: Example of modules in F and H slots C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 53: Wiring

    CHAPTER 3: INSTALLATION WIRING 3.3 Wiring 3.3.1 Typical wiring Figure 3-9: Typical wiring diagram (T module shown for CPU) C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 54: Dielectric Strength

    The power supply module can be ordered for two possible voltage ranges, and the C70 can be ordered with or without a redundant power supply module option. Each range has a dedicated input connection for proper operation. The ranges are as follows (see the Specifications section of chapter 2 for details): •...

  • Page 55: Ct/Vt Modules

    CT connections for both ABC and ACB phase rotations are identical, as shown in the Typical Wiring Diagram. The exact placement of a zero-sequence core balance CT to detect ground fault current is shown as follows. Twisted-pair cabling on the zero-sequence CT is recommended. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-11...
  • Page 56 Voltage inputs 8F, 8G, 8L, and 8M modules (4 CTs and 4 VTs) Current inputs 8H, 8J, 8N, and 8R modules (8 CTs) Voltage inputs 8V modules (8 VTs) 842809A1.CDR 3-12 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 57: Process Bus Modules

    The terminal configuration for contact inputs is different for the two applications. The contact inputs are grouped with a common return. The C70 has two versions of grouping: four inputs per common return and two inputs per common return. When a contact input/output module is ordered, four inputs per common is used.
  • Page 58 Where a tilde “~” symbol appears, substitute the slot position of the module. Where a number sign “#” appears, substitute the contact number. NOTE 3-14 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 59 2 Inputs Fast Form-C ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs Fast Form-C ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-15...
  • Page 60 2 Inputs 2 Outputs Solid-State Solid-State ~6a, ~6c 2 Inputs 2 Outputs Not Used Not Used ~7a, ~7c 2 Inputs 2 Outputs Solid-State Solid-State ~8a, ~8c 2 Inputs Not Used 3-16 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 61 CHAPTER 3: INSTALLATION WIRING Figure 3-14: Contact input and output module wiring (Sheet 1 of 2) C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-17...
  • Page 62 Figure 3-15: Contact input and output module wiring (Sheet 2 of 2) For proper functionality, observe the polarity shown in the figures for all contact input and output connections. 3-18 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 63 Afterwards the contact input current is reduced to a steady-state current. The impulse has a five-second delay after a contact input changes state. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-19...

  • Page 64: Transducer Inputs And Outputs

    Transducer input modules can receive input signals from external DCmA output transducers (DCmA In) or resistance temperature detectors (RTDs). Hardware and software are provided to receive signals from these external transducers and convert these signals into a digital format for use as required. 3-20 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 65 (5A, 5C, 5D, 5E, and 5F) and channel arrangements that can be ordered for the relay. Where a tilde “~” symbol appears, substitute the slot position of the module. NOTE Figure 3-19: Transducer input/output module wiring The following figure show how to connect RTDs. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-21...

  • Page 66: Rs232 Faceplate Port

    The baud rate for this port can be set, with a default of 115200 bps. Figure 3-21: RS232 faceplate port connection 3.3.9 CPU communication ports 3.3.9.1 Overview In addition to the faceplate RS232 port, there is a rear RS485 communication port. 3-22 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 67 This common voltage is implied to be a power supply common. Some systems allow the shield (drain wire) to be used as common wire and to connect directly to the C70 COM terminal (#3); others function correctly only if the common wire is connected to the C70 COM terminal, but insulated from the shield.

  • Page 68: Irig-B

    IRIG-B is a standard time code format that allows stamping of events to be synchronized among connected devices. The IRIG-B code allows time accuracies of up to 100 ns. Using the IRIG-B input, the C70 operates an internal oscillator with 1 µs resolution and accuracy.

  • Page 69: Direct Input And Output Communications

    UR-series relays with the following connections: UR1-Tx to UR2-Rx, UR2-Tx to UR3-Rx, UR3-Tx to UR4-Rx, and UR4-Tx to UR1-Rx. A maximum of 16 UR-series relays can be connected in a single ring. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-25...
  • Page 70 1 to channel 2 on UR2, set the setting to “Enabled” on UR2. This DIRECT I/O CHANNEL CROSSOVER forces UR2 to forward messages received on Rx1 out Tx2, and messages received on Rx2 out Tx1. 3-26 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 71: Fiber: Led And Eled Transmitters

    The following figure shows the 64K ITU G.703 co-directional interface configuration. The G.703 module is fixed at 64 kbps. The setting is not SETTINGS  PRODUCT SETUP  DIRECT I/O  DIRECT I/O DATA RATE applicable to this module. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-27...
  • Page 72 Once the clips have cleared the raised edge of the chassis, engage the clips simultaneously. When the clips have locked into position, the module is inserted fully. 3-28 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 73 (S1 = ON) and set timing mode to loop timing (S5 = OFF and S6 = OFF). The switch settings for the internal and loop timing modes are shown. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-29...
  • Page 74 One source lies on the G.703 line side of the interface while the other lies on the differential Manchester side of the interface. Figure 3-34: G.703 dual loopback mode DMR = Differential Manchester Receiver DMX = Differential Manchester Transmitter G7X = G.703 Transmitter G7R = G.703 Receiver 842775A1.CDR 3-30 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 75: Rs422 Interface

    1 are also paralleled to the terminal timing inputs of data module 2. By using this configuration, the timing for both data modules and both UR RS422 channels are derived from a single clock C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-31...
  • Page 76 831022A3.CDR Data module 1 provides timing to the C70 RS422 interface via the ST(A) and ST(B) outputs. Data module 1 also provides timing to data module 2 TT(A) and TT(B) inputs via the ST(A) and AT(B) outputs. The data module pin numbers have been omitted in the figure because they vary by manufacturer.

  • Page 77: Ieee C37.94 Interface

    IEEE C37.94 standard. The following figure shows the concept. Figure 3-40: IEEE C37.94 connection to non-compliant digital multiplexer C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-33...
  • Page 78 5.60. For customers using firmware release 5.60 and higher, the module can be identified with "Rev D" printed on the module and is to be used on all ends of C70 communication for two and three terminal applications.
  • Page 79 Modules shipped since January 2012 have status LEDs that indicate the status of the DIP switches, as shown in the following figure. Figure 3-43: Status LEDs The clock configuration LED status is as follows: • Flashing green — loop timing mode while receiving a valid data packet C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-35...

  • Page 80: Activate Relay

    NEW SETTING Not Programmed Programmed HAS BEEN STORED When the "NEW SETTING HAS BEEN STORED" message appears, the relay is in "Programmed" state and the "In Service" LED turns on. 3-36 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 81: Install Software

    This device (catalog number F485) connects to the computer using a straight-through serial cable. A shielded twisted-pair (20, 22, or 24 AWG) connects the F485 converter to the C70 rear communications port. The converter terminals (+, –, GND) are connected to the C70 communication module (+, –, COM) terminals. See the CPU Communication Ports section in chapter 3 for details.

  • Page 82: System Requirements

    Ethernet port of the same type as one of the UR CPU ports or a LAN connection to the UR • Internet access or a DVD drive The following qualified modems have been tested to be compatible with the C70 and the EnerVista software: • US Robotics external 56K FaxModem 5686 •...

  • Page 83: Configure The C70 For Software Access

    3.7 Configure the C70 for software access You connect remotely to the C70 through the rear RS485 or Ethernet port with a computer running the EnerVista UR Setup software. The C70 also can be accessed locally with a computer through the front panel RS232 port or the rear Ethernet port using the Quick Connect feature.

  • Page 84: Configure Serial Communication

    3.7.1 Configure serial communication A computer with an RS232 port and a serial cable are required. To use the RS485 port at the back of the relay, a GE Digital Energy F485 converter (or compatible RS232-to-RS485 converter) is required. See the F485 instruction manual for details.

  • Page 85: Configure Ethernet Communication

     PRODUCT SETUP  COMMUNICATIONS MODBUS PROTOCOL 11. Click the Read Order Code button to connect to the C70 device and upload the order code. If an communications error occurs, ensure that the three EnerVista UR Setup values entered in the previous steps correspond to the relay setting values.

  • Page 86: Automatic Discovery Of Ur Devices

    Open the Settings > Product Setup > Display Properties window as shown. The window opens with a status indicator on the lower left of the EnerVista UR Setup window. 3-42 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 87: Use Quick Connect Via The Front Panel Rs232 Port

    Connect a nine-pin to nine-pin RS232 serial cable to the computer and the front panel RS232 port. Verify that the latest version of the EnerVista UR Setup software is installed (available from the GE EnerVista DVD or online from http://www.gedigitalenergy.com/multilin). See the software installation section if not already installed.

  • Page 88: Use Quick Connect Via A Rear Ethernet Port

    3.8.3 Use Quick Connect via a rear Ethernet port To use the Quick Connect feature to access the C70 from a computer through Ethernet, first assign an IP address to the relay using the front panel keyboard. Press the key until the menu displays.
  • Page 89 CONNECT TO THE C70 connections window. Right-click the Local Area Connection icon and select Properties. Select the Internet Protocol (TCP/IP) item from the list, and click the Properties button. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-45...
  • Page 90 CHAPTER 3: INSTALLATION Click the “Use the following IP address” box. Enter an IP address with the first three numbers the same as the IP address of the C70 relay and the last number different (in this example, 1.1.1.2). Enter a subnet mask equal to the one set in the C70 (in this example, 255.0.0.0).
  • Page 91 If this computer is used to connect to the Internet, re-enable any proxy server settings after the computer has been disconnected from the C70 relay. Start the Internet Explorer software. Select the UR device from the EnerVista Launchpad to start EnerVista UR Setup. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-47...
  • Page 92 Click the Quick Connect button to open the window. Select the Ethernet interface and enter the IP address assigned to the C70, then click the Connect button. The EnerVista UR Setup software creates a site named “Quick Connect” with a corresponding device also named “Quick Connect”...

  • Page 93: Set Up Cybersentry And Change Default Password

    If using EnerVista, navigate to Settings > Product Setup > Security. Change the Local Administrator Password, for example. It is strongly recommended that the password for the Administrator be changed from the default. Changing the passwords for the other three roles is optional. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 3-49...
  • Page 94 SET UP CYBERSENTRY AND CHANGE DEFAULT PASSWORD CHAPTER 3: INSTALLATION Figure 3-55: Changing the default password 3-50 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 95: Interfaces

    The EnerVista UR Setup software is provided with every C70. This chapter outlines the EnerVista software interface features. The EnerVista UR Setup Help File also provides details for getting started and using the software interface.

  • Page 96: Event Viewing

    IP Address IP Subnet Mask IP Routing When a settings file is loaded to a C70 that is in-service, the following sequence occurs: The C70 takes itself out of service. The C70 issues a UNIT NOT PROGRAMMED major self-test error.

  • Page 97: Settings Templates

    (settings file templates) and online devices (online settings templates). The functionality is identical for both purposes. Settings file conversion from previous firmware versions is supported. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 98 By default, all settings are specified as locked and displayed against a grey background. The icon on the upper right of the settings window also indicates that the EnerVista software is in EDIT mode. The following example shows the phase time overcurrent settings window in edit mode. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 99 The following procedure outlines how to add password protection to a settings file template. Select a settings file from the offline window on the left of the EnerVista UR Setup window. Select the Template Mode > Password Protect Template option. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 100 Viewing the settings in template mode also modifies the settings menu, showing only the settings categories that contain editable settings. The effect of applying the template to a typical settings menu is shown as follows. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 101 Select an installed device or settings file on the left side of the EnerVista UR Setup window. Right-click and select the Template Mode > Remove Settings Template option. Enter the template password and click OK to continue. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 102: Secure And Lock Flexlogic Equations

    Click the Save button to save and apply changes to the settings template. Select the Template Mode > View In Template Mode option to view the template. Apply a password to the template then click OK to secure the FlexLogic equation. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 103 Right-click the setting file in the offline window area and select the Edit Settings File Properties item. The window opens. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 104: Settings File Traceability

    When a settings file is transferred to a C70 device, the date, time, and serial number of the C70 are sent back to EnerVista UR Setup and added to the settings file on the local computer. This information can be compared with the C70 actual values at any later date to determine if security has been compromised.
  • Page 105 With respect to the figure, the traceability feature is used as follows. The transfer date of a settings file written to a C70 is logged in the relay and can be viewed in the EnerVista software or the front panel display. Likewise, the transfer date of a settings file saved to a local computer is logged in the EnerVista software.

  • Page 106: Front Panel Interface

    For example, for 127.0.0.1, press 127, then •, then 0, then •, then 0, then •, then 1. To save the address, press key. ENTER The figure shows the sequence to use to enter a setting. Subsequent sections provide more detail. 4-12 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 107: Menu Navigation

    Default values are indicated in this instruction manual in mixed case. In the example shown here, the default access level is Restricted. Highest level Lowest level (setting value)  SETTINGS  SECURITY ACCESS LEVEL:    PRODUCT SETUP  Restricted   SETTINGS  SYSTEM SETUP C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 4-13...

  • Page 108: Changing Settings

    VALUE upward from the minimum value. The down arrow decrements the displayed value by the step value, down to VALUE 4-14 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 109: Faceplate

    The front panel consists of LED panels, an RS232 port, keypad, LCD display, control pushbuttons, and optional user- programmable pushbuttons. The faceplate is hinged to allow access to the removable modules. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 4-15...
  • Page 110 The following figure shows the horizontal arrangement of the faceplate panel. Figure 4-18: Standard horizontal faceplate The following figure shows the vertical arrangement of the faceplate panel for relays ordered with the vertical option. 4-16 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 111: Led Indicators

    SETTINGS  INPUT/OUTPUTS  RESETTING keys are used by the breaker control feature. USER Figure 4-20: Typical LED panel for enhanced faceplate 842811A1.CDR The status indicators in the first column are as follows: C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 4-17...
  • Page 112 Support for applying a customized label beside every LED is provided. Default labels are shipped in the label package of every C70, together with custom templates. The default labels can be replaced by user-printed labels. User customization of LED operation is of maximum benefit in installations where languages other than English are used to communicate with operators.
  • Page 113 User customization of LED operation is of maximum benefit in installations where languages other than English are used to communicate with operators. See the User-programmable LEDs section in chapter 5 for the settings used to program the operation of the LEDs on these panels. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 4-19...

  • Page 114: Custom Led Labeling

    EnerVista UR Setup software is installed and operational • The C70 settings have been saved to a settings file • The UR front panel label cutout sheet (GE part number 1006-0047) has been downloaded from http://www.gedigitalenergy.com/products/support/ur/URLEDenhanced.doc and printed • Small-bladed knife To create custom LED labels for the enhanced front panel display: Start the EnerVista UR Setup software.
  • Page 115 NOTE The label package shipped with every C70 contains the three default labels, the custom label template sheet, and the label removal tool. If the default labels are suitable for your application, insert them in the appropriate slots and program the LEDs to match them.
  • Page 116 Bend the tab at the center of the tool tail as shown. To remove the LED labels from the C70 enhanced front panel and insert the custom labels: Use the knife to lift the LED label and slide the label tool underneath. Ensure that the bent tabs are pointing away from the relay.
  • Page 117 Slide the new LED label inside the pocket until the text is properly aligned with the LEDs, as shown. To remove the user-programmable pushbutton labels from the C70 enhanced front panel and insert the custom labels: Use the knife to lift the pushbutton label and slide the tail of the label tool underneath, as shown. Ensure that the bent tab points away from the relay.
  • Page 118 Remove the tool and attached user-programmable pushbutton label. Slide the new user-programmable pushbutton label inside the pocket until the text is properly aligned with the 4-24 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 119: Breaker Control

    4.2.9 Breaker control The C70 can interface with associated circuit breakers. In many cases the application monitors the state of the breaker, that can be presented on faceplate LEDs, along with a breaker trouble indication. Breaker operations can be manually initiated from the faceplate keypad or automatically initiated from a FlexLogic operand.

  • Page 120: Change Passwords

    When entering a settings or command password via EnerVista or any serial interface, the user must enter the corresponding connection password. If the connection is to the back of the C70, the remote password must be used. If the connection is to the RS232 port of the faceplate, the local password must be used.

  • Page 121: Invalid Password Entry

    By default, when an incorrect Command or Setting password has been entered via the faceplate interface three times within five minutes, the FlexLogic operand is set to “On” and the C70 does not allow settings or command LOCAL ACCESS DENIED level access via the faceplate interface for five minutes.

  • Page 122: Logic Diagrams

    TRIP BUS 1 PKP = Enabled TRIP BUS 1 BLOCK = Off SETTINGS TRIP BUS 1 LATCHING = Enabled TRIP BUS 1 RESET = Off FLEXLOGIC OPERAND RESET OP 842023A1.CDR 4-28 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 123 CHAPTER 4: INTERFACES LOGIC DIAGRAMS C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 4-29...
  • Page 124 LOGIC DIAGRAMS CHAPTER 4: INTERFACES 4-30 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 125: Settings

    See page 5-89    USER-PROGRAMMABLE See page 5-90   LEDS  USER-PROGRAMMABLE See page 5-94   SELF TESTS  CONTROL See page 5-94   PUSHBUTTONS C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 126   SETTING GROUP 6     SETTINGS  TRIP BUS See page 5-217   CONTROL ELEMENTS   SETTING GROUPS See page 5-219    C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 127 TEST MODE FORCING: Range: FlexLogic operand   See page 5-271  FORCE CONTACT See page 5-272   INPUTS  FORCE CONTACT See page 5-272    OUTPUTS C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 128: Overview

    FUNCTION setting — This setting programs the element to operate when selected as “Enabled.” The factory default is “Disabled.” Once “Enabled,” any element associated with the function becomes active and all options become available. • NAME setting — This setting is used to uniquely identify the element. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 129: Introduction To Ac Sources

    CT connections). The same considerations apply to transformer winding 2. The protection elements require access to the net current for transformer protection, but some elements can need access to the individual currents from CT1 and CT2. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 130 CT/VT module 2 CT/VT module 3 < bank 1 > < bank 3 > < bank 5 > < bank 2 > < bank 4 > < bank 6 > C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 131: Product Setup

    To reset the unit after a lost password: Email GE customer service at [email protected] with the serial number and using a recognizable corporate email account. Customer service provides a code to reset the relay to the factory defaults.
  • Page 132  EVENTS: Disabled The C70 supports password entry from a local or remote connection. Local access is defined as access to settings or commands via the faceplate. This includes both keypad entry and the RS232 port. Remote access is defined as access to settings or commands via any rear communications port. This includes both Ethernet and RS485 connections.
  • Page 133 When entering a settings or command password via EnerVista or any serial interface, the user must enter the corresponding connection password. If the connection is to the back of the C70, the remote password must be used. If the connection is to the RS232 port of the faceplate, the local password must be used.
  • Page 134 REMOTE ACCESS DENIED FlexLogic operands are set to “On.” These operands are returned to the “Off” state upon expiration of the lockout. — This setting specifies the time that the C70 locks out password access after the number PASSWORD LOCKOUT DURATION of invalid password entries specified by the setting has occurred.
  • Page 135 CHAPTER 5: SETTINGS PRODUCT SETUP The C70 provides a means to raise an alarm upon failed password entry. If password verification fails while accessing a password-protected level of the relay (either settings or commands), the FlexLogic operand is asserted. UNAUTHORIZED ACCESS The operand can be programmed to raise an alarm via contact outputs or communications.
  • Page 136 The EnerVista security system allows an administrator to manage access privileges of multiple users of EnerVista. It is disabled by default to allow access to the device immediately after installation. When security is disabled, all users have administrator access. GE recommends enabling the EnerVista security before placing the device in service. 5-12...
  • Page 137 Click the Ok button. If you force password entry by using this feature, ensure that you know the Administrator password. If you do not know the password and are locked out of the software, contact GE Digital Energy for the default password NOTE of a UR device.
  • Page 138 The EnerVista security management system must be enabled (the Enable Security check box enabled) To modify user privileges: Select the Security > User Management item from the top menu to open the user management window. Locate the username in the User field. 5-14 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 139 Click OK to save the changes. 5.3.1.4 CyberSentry security The EnerVista software provides the means to configure and authenticate the C70 access using either a server or the device. Access to functions depends on user role. The login screen of EnerVista has two options for access to the C70, these being Server and Device authentication.
  • Page 140 In this case, it uses built-in roles (Administrator, Engineer, Supervisor, Operator, Observer), as login accounts and the associated passwords are stored on the C70 device. In this case, access is not user-attributable. In cases where user-attributable access is required, especially for auditable processes for compliance reasons, use server authentication (RADIUS) only.
  • Page 141 CHAPTER 5: SETTINGS PRODUCT SETUP Figure 5-3: CyberSentry security panel For the Device > Settings > Product Setup > Supervisory option, the panel looks like the following. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-17...
  • Page 142 EAP-TTLS EAP-TTLS Administrator Authentication server. Currently fixed to EAP-TTLS. Method Timeout Timeout in seconds between re- 9999 Administrator transmission requests Retries Number of retries before giving up 9999 Administrator 5-18 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 143 All RADIUS users are Password following Me1# role and password-protected. Requirements password Administrator, section earlier section for except for in this chapter requireme Supervisor, where it is only itself C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-19...
  • Page 144 This role also has the ability to forcefully log off any other role and clear the security event log. This role can also be disabled, but only through a Supervisor authentication. When this role is disabled its permissions are assigned to the Administrator role. 5-20 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 145 • Observer — This role has read-only access to all C70 settings. This role allows unlimited concurrent access but it has no download access to any files on the device. Observer is the default role if no authentication has been done to the device.
  • Page 146 Administrator if the Supervisor role is disabled. The Supervisor role disables this setting for the relay to start accepting settings changes, command changes, or firmware upgrade. After all the setting changes are applied or commands executed, the Supervisor enables to lock settings changes. 5-22 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 147 EnerVista software. The RADIUS server itself also must be configured. The appendix called RADIUS Server at the end of this instruction manual gives an example of how to set up a simple RADIUS server. Once both the RADIUS server and C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-23...
  • Page 148 — UTC date and time Date & Timestamp — 255 chars maximum, but in the security log it is truncated to 20 characters Username — Device IP address IP address 5-24 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 149: Display Properties

    Range: 0.002 to 0.020 pu in steps of 0.001  LEVEL: 0.020 pu VOLTAGE CUT-OFF Range: 0.1 to 1.0 V secondary in steps of 0.1  LEVEL: 1.0 V C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-25...
  • Page 150 Some customers prefer very low currents to display as zero, while others prefer the current to display even when the value reflects noise rather than the actual signal. The C70 applies a cut-off value to the magnitudes and angles of the measured currents.

  • Page 151: Clear Relay Records

    Selected records can be cleared from user-programmable conditions with FlexLogic operands. Assigning user- programmable pushbuttons to clear specific records is a typical application for these commands. Since the C70 responds to rising edges of the configured FlexLogic operands, they must be asserted for at least 50 ms to take effect.
  • Page 152 Range: 0 to 1000 ms in steps of 10  MIN TIME: 0 ms , and — The C70 is equipped with two independent serial communication RS232 BAUD RATE RS485 COM2 BAUD RATE PARITY ports. The faceplate RS232 port is intended for local use and has two options for baud rate. The rear COM2 port is RS485 and has settings for baud rate and parity.
  • Page 153 5.3.4.3 Ethernet network topology The C70 has three Ethernet ports. Each Ethernet port must belong to a different network or subnetwork. Configure the IP address and subnet to ensure that each port meets this requirement. Two subnets are different when the bitwise AND operation performed between their respective IP address and mask produces a different result.
  • Page 154 LAN2, to which port 2 (P2) is connected, and communications with SCADA on LAN3, to which port 3 (P3) is connected. There is no redundancy. 5-30 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 155 — This setting sets the port’s IPv4 address in standard IPV4 format. This setting is valid on port 3 if PRT1 (2 or 3) IP ADDRESS port 2 is set to None. REDUNDANCY C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-31...
  • Page 156 2 is performed. The delay in switching back ensures that rebooted switching devices connected to the C70, which signal their ports as active prior to being completely functional, have time to completely initialize themselves and become active. Once port 2 is active again, port 3 returns to standby mode.
  • Page 157 PRODUCT SETUP 5.3.4.6 Parallel Redundancy Protocol (PRP) The C70 is provided with optional PRP capability. This feature is specified as a software option at the time of ordering. See the Order Codes section in chapter 2 for details. The Parallel Redundancy Protocol (PRP) defines a redundancy protocol for high availability in substation automation networks.
  • Page 158 Delete the default route by replacing the default gateway with the default value of 127.0.0.1. General conditions to be satisfied by static routes The following rules are validated internally: 5-34 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 159 Port 2 (IP address 10.1.2.2) connects the UR to LAN 10.1.2.0/24 and to the EnerVista software through Router2. Router2 has an interface on 10.1.2.0/24 and the IP address of this interface is 10.1.2.1. The configuration before release 7.10 was as follows: C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-35...
  • Page 160  MODBUS PROTOCOL MODBUS SLAVE Range: 0 to 254 in steps of 1   ADDRESS: 254 MODBUS TCP PORT Range: 0 to 65535 in steps of 1  NUMBER: 502 5-36 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 161 0 disables Modbus over TCP/IP, meaning closes the Modbus TCP port. When the port number is changed to 0, the change takes effect when the C70 is restarted. When it is set to 0, use the front panel or serial port to communicate with the relay.
  • Page 162 DNP UNSOL RESPONSE Range: 0 to 65519 in steps of 1  DEST ADDRESS: 1 DNP CURRENT SCALE Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,  FACTOR: 1 100000 5-38 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 163 The protocol is scalable; that is, it is designed to be compatible with the latest high speed LAN technology yet still be implemented over slower speed serial links. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-39...
  • Page 164 DNP ADDRESS unique address to each DNP slave. The C70 can specify a maximum of five clients for its DNP connections. These are IP addresses for the controllers to which the C70 can connect. The settings follow. SETTINGS  PRODUCT SETUP  COMMUNICATIONS  DNP PROTOCOL  DNP NETWORK CLIENT ADDRESSES ...
  • Page 165 DNP TCP connection for greater than the time specified by this setting, the connection is aborted by the C70. This frees up the connection to be re-used by a client. Any change takes effect after cycling power to the relay.
  • Page 166 FlexLogic operand. See the Introduction to FlexLogic section in this chapter for the range of assignable operands. Changes to the DNP / IEC 60870-5-104 point lists take effect when the C70 is restarted. The menu for the analog input points (DNP) or MME points (IEC 60870-5-104) follows.
  • Page 167 EnerVista setup for IEC 61850 The EnerVista UR Setup software provides the interface to configure C70 settings for the IEC 61850 protocol. This section describes this interface. The software also supports import and export of IEC 61850 Substation Configuration Language (SCL) files as documented in the UR Series Communications Guide.
  • Page 168 Opening the IEC 61850 window while online causes the UR Setup software to retrieve and import an SCL file from the connected C70. This SCD file contains all the settings in the UR at the time of the file request, both those that are mapped into the IEC 61850 information model (that is, the "public"...
  • Page 169 When the Save button in the online IEC 61850 window is clicked, UR Setup software prepares a configured IED description (CID) file containing all the device’s settings and sends the CID file to the connected C70. On receipt of a CID file, the C70 checks it for correctness, and if no error is found, reboots using the settings in the CID file.
  • Page 170 The value entered sets the value of the data attribute /LPHD1.PhyNam.longitude. This data attribute is provided by the protocol to allow the user to declare the geographical position of the device in WGS84 coordinates - longitude. Negative values indicate a western longitude. 5-46 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 171 Default: 0 This data attribute is provided by the protocol to make changes to the settings of the C70 apparent to clients. The Substation Configuration Tool and UR Setup software advance the value of paramRev each time any setting changes.
  • Page 172 The entities whose values are published in GOOSE messages are known as members. The members are itemized in an ordered list known as a data set. Each TxGOOSE can use any one of the data sets provided. See the DataSets section later for details. 5-48 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 173 When set to Disabled, no GOOSE messages are published on C70 Ethernet port 1, and any GOOSE messages received on port 1 are ignored. When set to Enabled, all enabled GOOSE messages are published on C70 Ethernet port 1, and any GOOSE messages received on port 1 are listened to.
  • Page 174 The standard recommends that the algorithm used by hardware of the receiving device be considered when assigning destination multicast addresses. Subscribers can use this address to discriminate TxGOOSE1 messages from other GOOSE messages. 5-50 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 175 The value entered sets the timeAllowedtoLive value in published TxGOOSE1 messages. The standard requires subscribers to assume a failure has occurred when another TxGOOSE1 message is not received within the published timeAllowedtoLive time. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-51...
  • Page 176 RxGOOSE assumes that connectivity is lost. FlexLogic operands (for example, RxGOOSE1 On, RxGOOSE1 Off) reflect the status of each RxGOOSE connectivity. RxGOOSE connectivity of an RxGOOSE with non-zero MAC address is also considered lost after the C70 finishes restart until a message is received. When RxGOOSE connectivity is lost, a common RxGOOSE Fail self-test activates.
  • Page 177 is the name of the publishing control block. The C70 translates the ACSI format required for this setting to the MMS format used in GOOSE messages: /LLN0$GO$ If the publisher is a UR 7.3x series device, is the value of the publisher's Master functional ldName setting if that setting is not empty, otherwise it is the value of the publisher's IED NAME suffixed with "Master".
  • Page 178 Navigate to Settings > Product Setup > Communications > IEC 61850 > GOOSE > RxGOOSE > RxGOOSE Boolean Inputs > RxGOOSE Boolean1 to access the settings for the first RxGOOSE Boolean. The settings and functionality for the others are similar. 5-54 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 179 "Latest/Off" freezes the input in case of lost connectivity. If the latest state is unknown, such as after UR power-up but before the first communication, the input defaults to logic 0. When communication resumes, the input becomes fully operational. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-55...
  • Page 180 This setting allows the user to assign descriptive text to the names of the four RxGOOSE DPS1 FlexLogic operands. The full operand name is the value of this setting appended with "Intermediate," "On," "Off," or "Bad." This descriptive text also appears in the SCL files associated with the C70. RxGOOSE DPS1 RxGOOSE...
  • Page 181 This setting allows the user to assign descriptive text to RxGOOSE Analog1. This descriptive text also appears in the SCL files associated with the C70. Unlike RxGOOSE Booleans and RxGOOSE DPS, the RxGOOSE Analog operands have fixed names, for example RxGOOSE Analog1.
  • Page 182 Range: 0.000 to 1000000000.000 in steps of 0.001 Default: 1.000 This setting specifies the per-unit base value for other C70 features to use with the RxGOOSE Analog1 operand. A FlexElement for instance subtracts two quantities after converting their values to integers rescaled to a common base, the common base being the largest of the base values of the two quantities.
  • Page 183 Control blocks and data sets can be pre-configured by sending the C70 a CID file. See the UR Series Communications Guide for details. EnerVista UR Setup also can be used to select the data set members and to pre-configure the control blocks.
  • Page 184 Range: 0 to 4294967295 in steps of 1 Default: 0 The entered value sets the time interval in milliseconds for the buffering of events for inclusion in a single report. 5-60 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 185 The OptFlds setting is bitstring that controls which of the optional fields are included in report messages. The options are as follows: – sequence-number – report-time-stamp – reason-for-inclusion – data-set-name – data-reference C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-61...
  • Page 186 Communications Guide. All FlexLogic and FlexAnalog operands can be user-assigned to GGIO1 or GGIO4 data attributes, so that operands without factory assigned data attributes can still have their values published. See the GGIO1 and GGIO4 sections later for details. 5-62 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 187 (db in the figure). Changes to this deadbanded value trigger transmissions when included in GOOSE and report data sets. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-63...
  • Page 188 Navigate to Settings > Communications > IEC 61850 > System Setup > Breakers > Breaker 1 to access the settings that configure the IEC 61850 protocol interface with the first breaker control and status monitoring element. The settings and functionality for the others are similar. 5-64 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 189 SelectWithValue or Operate service with ctlVal true and with Check.Interlock-check true is requested of either BkrCSWI1.Pos or Bkr0XCBR1.Pos and the selected operand is not activated, a Negative Response (-Rsp) is issued with the REASON CODE of Blocked-by-interlocking. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-65...
  • Page 190 This setting specifies the maximum time between an operate command to breaker 1 via BkrCSWI1.Pos until BkrCSWI1.Pos.stVal enters the commanded state. The command terminates if the commanded state is not reached in the set time. 5-66 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 191 If a SelectWithValue or Operate service with ctlVal false and with Check.Interlock-check true is requested of DiscCSWI1.Pos or Disc0XSWI1.Pos and the selected operand is not activated, a Negative Response (-Rsp) is issued with the REASON CODE of Blocked-by-interlocking. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-67...
  • Page 192 > System Setup section later. These signals force a disconnect switch trip or close control while the operand selected by setting XSWI1 ST.LOC OPERAND is not active. "sbo" here is select-before-operate. Enhanced security means that the C70 reports to the client the disconnect switch 1 position the end of the command sequence.
  • Page 193 UR reboot immediately following the receipt of a valid CID file. This setting is not mapped into the IEC 61850 information model, but sets the value of SettingControl element attribute actSG in SCL files. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-69...
  • Page 194 This setting selects the control model clients must use to successfully control the command CLEAR FAULT REPORTS. "sbo" here is select-before-operate. Enhanced security means that the C70 reports to the client the breaker 1 position at the end of the command sequence.
  • Page 195 /GGIO1.Ind001.stVal. See the FlexLogic section in this chapter for a list of FlexLogic operands. GGIO1 INDICATION 2 Range: any FlexLogic operand Default: OFF Selects the FlexLogic operand mapped to /GGIO1.Ind002.stVal, and so on. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-71...
  • Page 196 Navigate to Settings > Product Setup > Communications > IEC 61850 > GGIO > GGIO4 > GGIO4.AnIn1 to access the settings for the first GGIO4 value. The settings and functionality for the others are similar. 5-72 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 197 /GGIO4.AnIn01.instMag.f. This setting is stored as an IEEE 754 / IEC 60559 floating point number. Because of the large range of this setting, not all possible values can be stored. Some values are rounded to the closest possible floating point number. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-73...
  • Page 198 CHAPTER 5: SETTINGS File transfer by IEC 61850 The C70 supports file transfer by IEC 61850. The approach is as follows, using the SISCO AX-S4 61850 client software as an example. In the AX-S4 61850 Explorer window, click the Tools menu and access the SISCO File Transfer Utility.
  • Page 199 NUMBER: 0 The Trivial File Transfer Protocol (TFTP) can be used to transfer files from the C70 over a network. The C70 operates as a TFTP server. TFTP client software is available from various sources, including Microsoft Windows NT. The dir.txt file obtained from the C70 contains a list and description of all available files, for example event records and oscillography.
  • Page 200 COMMUNICATIONS  PROTOCOL connected to a maximum of two masters (usually either an RTU or a SCADA master station). Since the C70 maintains two sets of IEC 60870-5-104 data change buffers, ideally no more than two masters actively communicate with the C70 at one time.
  • Page 201 0.0.0.0 The C70 can specify a maximum of five clients for its IEC 104 connections. These are IP addresses for the controllers to which the C70 can connect. A maximum of two simultaneous connections are supported at any given time.
  • Page 202 PTP, or SNTP, its time is overwritten by these three sources, if any of them is active. If the synchronization timeout occurs and none of IRIG-B, PTP, or SNTP is active, the C70 sets the invalid bit in the time stamp of a time-tagged message.
  • Page 203 — The configuration field TYP indicates how many measurands are present in the corresponding TYPE IDENTIFICATION (TYP) ASDU. Each ASDU can take either 4 or 9 measurands maximum, depending on the type identification (3 respectively 9). C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-79...
  • Page 204 FlexAnalog operands. The measurands sent are voltage, current, power, power factor, and frequency. If any other FlexAnalog is chosen, the C70 sends 0 instead of its value. Note that the power is transmitted in KW, not W. Measurands are transmitted as ASDU 3 or ASDU 9 (type identification value set to measurands I, respectively measurands II).
  • Page 205 Commands are received as General Command (Type Identification 20). The user can configure the action to perform when an ASDU command comes. A list of available mappings is provided on the C70. This includes 64 virtual inputs (see the following table). The ON and OFF for the same ASDU command can be mapped to different virtual inputs.

  • Page 206: Modbus User Map

    The clock is updated by all sources active in the device. This means that whenever a time synchronization message is received through any of the active protocols, the C70 clock updates. However, given that IEC 60870-5-103, IEC 60870-5- 104, Modbus, and DNP are low-accuracy time synchronization methods, avoid their use for synchronization when better accuracy time protocols, such as IRIG-B, PTP, and SNTP, are active in the system.
  • Page 207 1588 software option at the time of ordering. See the Order Codes section in chapter 2 for details. The C70 supports the Precision Time Protocol (PTP) specified in IEEE Std 1588 2008 using the Power Profile (PP) specified in IEEE Std C37.238 2011. This enables the relay to synchronize to the international time standard over an Ethernet network that implements PP.
  • Page 208 A setting can be chosen that reduces the worst-case error to half of the range between minimum and maximum uncompensated delay, if these values are known. 5-84 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 209 C70 clock is closely synchronized with the SNTP/ NTP server. It takes up to two minutes for the C70 to signal an SNTP self-test error if the server is offline.

  • Page 210: User-Programmable Fault Report

     2:00 The C70 maintains two times: local time and Universal Coordinated Time (UTC). Local time can be provided by IRIG-B signals. UTC time is provided by SNTP servers. The real-time clock (RTC) and timestamps reported in historical records and communication protocols can be incorrect if the Local Time settings are not configured properly.

  • Page 211: Oscillography

    The user programmable record contains the following information: the user-programmed relay name, detailed firmware revision (x.xx, for example) and relay model (C70), the date and time of trigger, the name of pre-fault trigger (a specific FlexLogic operand), the name of fault trigger (a specific FlexLogic operand), the active setting group at pre-fault trigger, the active setting group at fault trigger, pre-fault values of all programmed analog channels (one cycle before pre-fault trigger), and fault values of all programmed analog channels (at the fault trigger).
  • Page 212 Parameters set to “Off” are ignored. The parameters available in a given relay depend on • the type of relay, 5-88 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 213: Data Logger

    The relay automatically partitions the available memory between the channels in use. The following table outlines examples of storage capacities for a system frequency of 60 Hz. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-89...

  • Page 214: User-Programmable Leds

    “Off” without overwriting old data. 5.3.10 User-programmable LEDs 5.3.10.1 Menu SETTINGS  PRODUCT SETUP  USER-PROGRAMMABLE LEDS  USER-PROGRAMMABLE  LED TEST See below   LEDS  5-90 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 215 The test responds to the position and rising edges of the control input defined by the LED TEST CONTROL setting. The control pulses must last at least 250 ms to take effect. The following diagram explains how the test is executed. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-91...
  • Page 216 2. When stage 2 is completed, stage 3 starts automatically. The test can be cancelled at any time by pressing the pushbutton. 5-92 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 217 LED 8 operand LED 20 operand LED 9 operand LED 21 operand LED 10 operand LED 22 operand LED 11 operand LED 23 operand LED 12 operand LED 24 operand C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-93...

  • Page 218: User-Programmable Self Tests

    These are user-programmable and can be used for various applications such as performing an LED test, switching setting groups, and invoking and scrolling though user-programmable displays. The location of the control pushbuttons are shown in the following figures. 5-94 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 219 PRODUCT SETUP Figure 5-33: Control pushbuttons (enhanced faceplate) Control pushbuttons 842813A1.CDR An additional four control pushbuttons are included on the standard faceplate when the C70 is ordered with the 12 user- programmable pushbutton option. Figure 5-34: Control pushbuttons (standard faceplate) STATUS...

  • Page 220: User-Programmable Pushbuttons

     EVENTS: Disabled The C70 is provided with this optional feature, specified as an option at the time of ordering. Using the order code for your device, see the order codes in chapter 2 for details. User-programmable pushbuttons provide an easy and error-free method of entering digital state (on, off) information. The number of available pushbuttons is dependent on the faceplate module ordered with the relay.
  • Page 221 PUSHBTN 1 SET The pushbutton is reset (deactivated) in self-reset mode when the dropout delay specified in the PUSHBTN 1 DROP-OUT setting expires. TIME C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-97...
  • Page 222 “Latched” mode. — This setting specifies the time delay for automatic reset of the pushbutton when in the PUSHBTN 1 AUTORST DELAY latched mode. 5-98 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 223 — If this setting is enabled, each pushbutton state change is logged as an event into the event PUSHBUTTON 1 EVENTS recorder. The figures show the user-programmable pushbutton logic. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-99...
  • Page 224 2, 842024A2 SETTING Reset Off = 0 SETTING SETTING Autoreset Delay Autoreset Function = Enabled = Disabled SETTING Drop-Out Timer TIMER 200 ms FLEXLOGIC OPERAND PUSHBUTTON 1 ON 842021A3.CDR 5-100 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 225: Flex State Parameters

    5.3.14 Flex state parameters SETTINGS  PRODUCT SETUP  FLEX STATE PARAMETERS  FLEX STATE PARAMETER 1: Range: FlexLogic operand   PARAMETERS  PARAMETER 256: Range: FlexLogic operand  C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-101...

  • Page 226: User-Definable Displays

    Range: up to 20 alphanumeric characters   DISP 1 BOTTOM LINE: Range: up to 20 alphanumeric characters  DISP 1 ITEM 1 Range: 0 to 65535 in steps of 1   5-102 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 227 If the parameters for the top line and the bottom line items have the same units, then the unit is displayed on the bottom line only. The units are only displayed on both lines if the units specified both the top and bottom line items are different. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-103...

  • Page 228: Direct Inputs And Outputs

    (direct device offline). These FlexLogic operands indicate that direct output DIRECT DEVICE 1 OFF DIRECT DEVICE 16 OFF messages from at least one direct device are not being received. 5-104 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 229 128 kbps Channel 1 128 kbps Channel 1 64 kbps, 128 kbps Channel 2 64 kbps, 128 kbps Channel 1 64 kbps, 128 kbps Channel 2 64 kbps, 128 kbps C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-105...
  • Page 230 In this application, apply the following settings. For UR-series IED 1: DIRECT OUTPUT DEVICE ID: “1” DIRECT I/O CH1 RING CONFIGURATION: “Yes” DIRECT I/O DATA RATE: “128 kbps” For UR-series IED 2: 5-106 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 231 DIRECT I/O CH1 RING CONFIGURATION: “Yes” DIRECT I/O CH2 RING CONFIGURATION: “Yes” For UR-series IED 4: DIRECT OUTPUT DEVICE ID: “4” DIRECT I/O CH1 RING CONFIGURATION: “Yes” DIRECT I/O CH2 RING CONFIGURATION: “Yes” C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-107...
  • Page 232 IEDs 2 and 3 constitute a second ring). Figure 5-44: Single-channel open loop configuration UR IED 1 UR IED 2 UR IED 3 842714A1.CDR 5-108 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 233 IED 2 to IED 3: 0.2 of power system cycle The two communications configurations can be applied to both permissive and blocking schemes. Take speed, reliability, and cost into account when selecting the required architecture. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-109...
  • Page 234 EVENTS: Disabled The C70 checks integrity of the incoming direct input and output messages using a 32-bit CRC. The CRC alarm function is available for monitoring the communication medium noise by tracking the rate of messages failing the CRC check. The monitoring function counts all incoming messages, including messages that failed the CRC check.

  • Page 235: Installation

    5.4 Remote resources 5.4.1 Remote resources configuration When the C70 is ordered with a process card module as a part of HardFiber system, an additional Remote Resources menu tree is available in the EnerVista software to allow configuration of the HardFiber system.

  • Page 236: System Setup

    Bricks. Remote resources settings configure the point-to-point connection between specific fiber optic ports on the C70 process card and specific Brick. The relay is then configured to measure specific currents, voltages and contact inputs from those Bricks, and to control specific outputs.
  • Page 237 On a 14.4 kV system with a delta connection and a VT primary to secondary turns ratio of 14400:120, the voltage value entered is 120; that is, 14400 / 120. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-113...

  • Page 238: Power System

    “Disabled” only in unusual circumstances; consult GE Digital Energy for special variable- FREQUENCY TRACKING frequency applications. The frequency tracking feature functions only when the C70 is in the “Programmed” mode. If the C70 is “Not Programmed,” then metering values are available but can exhibit significant errors. NOTE 5.5.3 Signal sources...
  • Page 239 CT wiring problem. A disturbance detector is provided for each source. The 50DD function responds to the changes in magnitude of the sequence currents. The disturbance detector logic is as follows. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-115...
  • Page 240 The following figure shows the arrangement of sources used to provide the functions required in this application, and the CT/VT inputs that are used to provide the data. 5-116 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 241: Breakers

    CONTROL: Disabled BREAKER 1 NAME: Range: up to six alphanumeric characters  Bkr 1 BREAKER 1 MODE: Range: 3-Pole, 1-Pole  3-Pole BREAKER 1 OPEN: Range: FlexLogic operand  C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-117...
  • Page 242 1. The number of breaker control elements depends on the number of CT/VT modules specified with the C70. The following settings are available for each breaker control element.
  • Page 243 MANUAL CLOSE RECAL1 TIME operator has initiated a manual close command to operate a circuit breaker. — Selects an operand indicating that breaker 1 is out-of-service. BREAKER 1 OUT OF SV C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-119...
  • Page 244 SYSTEM SETUP CHAPTER 5: SETTINGS Figure 5-49: Dual breaker control logic (Sheet 1 of 2) IEC 61850 functionality is permitted when the C70 is in “Programmed” mode and not in local control mode. NOTE 5-120 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 245 IEC 61850 trip and close commands shown is one protection pass only. To maintain the close/ open command for a certain time, do so on the contact outputs using the "Seal-in" setting, in the Trip Output element, or in FlexLogic. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-121...

  • Page 246: Disconnect Switches

    The number of available disconnect switches depends on the number of the CT/VT modules ordered with the C70. — This setting enables and disables operation of the disconnect switch element.
  • Page 247 This allows for non-simultaneous operation of the poles. IEC 61850 functionality is permitted when the C70 is in “Programmed” mode and not in local control mode. NOTE C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 248 SYSTEM SETUP CHAPTER 5: SETTINGS Figure 5-51: Disconnect switch logic 5-124 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 249: Flexcurves

    1.00 pu. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-125...
  • Page 250 30 ms. At approximately four times pickup, the curve operating time is equal to the MRT and from then onwards the operating time remains at 200 ms. 5-126 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 251 If this is attempted, the EnerVista software generates an error message and discards the proposed changes. NOTE 5.5.6.5 Standard recloser curves The following graphs display standard recloser curves available for the C70. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-127...
  • Page 252 CURRENT (multiple of pickup) 842723A1.CDR Figure 5-56: Recloser curves GE113, GE120, GE138, and GE142 GE142 GE138 GE120 GE113 0.05 7 8 9 10 12 CURRENT (multiple of pickup) 842725A1.CDR 5-128 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 253 7 8 9 10 12 CURRENT (multiple of pickup) 842730A1.CDR Figure 5-58: Recloser curves GE131, GE141, GE152, and GE200 GE152 GE141 GE131 GE200 7 8 9 10 12 CURRENT (multiple of pickup) 842728A1.CDR C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-129...
  • Page 254 Figure 5-60: Recloser curves GE116, GE117, GE118, GE132, GE136, and GE139 GE132 GE139 GE136 GE116 0.05 GE117 GE118 0.02 0.01 7 8 9 10 12 CURRENT (multiple of pickup) 842726A1.CDR 5-130 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 255 7 8 9 10 12 CURRENT (multiple of pickup) 842724A1.CDR Figure 5-62: Recloser curves GE119, GE135, and GE202 GE202 GE135 GE119 7 8 9 10 12 CURRENT (multiple of pickup) 842727A1.CDR C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-131...

  • Page 256: Flexlogic

    Figure 5-63: UR architecture overview The states of all digital signals used in the C70 are represented by flags (or FlexLogic operands, which are described later in this section). A digital “1” is represented by a set flag. Any external contact change-of-state can be used to block an element from operating, as an input to a control feature in a FlexLogic equation, or to operate a contact output.
  • Page 257 The number of pulses counted is equal to the set number Lower than Counter 1 LO The number of pulses counted is below the set number Fixed Logic 1 Logic 0 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-133...
  • Page 258 Automatic voltage regulator 1 issued an open command AVR 1 OPEN DPO Open command of automatic voltage regulator 1 dropped out AVR 2 to 3 Same set of operands as shown for AVR 1 5-134 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 259 BRK RESTRIKE 1 OP C Breaker restrike detected in phase C of the breaker control 1 element BKR RESTRIKE 2 to 3 Same set of operands as shown for BKR RESTRIKE 1 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-135...
  • Page 260 Digital counter 1 output is ‘equal to’ comparison value Counter 1 LO Digital counter 1 output is ‘less than’ comparison value Counter 2 to 8 Same set of operands as shown for Counter 1 5-136 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 261 Non-volatile latch 1 is ON (Logic = 1) Non-volatile latches LATCH 1 OFF Non-volatile latch 1 is OFF (Logic = 0) LATCH 2 to 16 Same set of operands as shown for LATCH 1 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-137...
  • Page 262 Same set of operands as shown for NTRL CUR 1 ELEMENT: NTRL DIR OC1 FWD Neutral directional overcurrent 1 forward has operated Neutral directional NTRL DIR OC1 REV Neutral directional overcurrent 1 reverse has operated overcurrent 5-138 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 263 Phase B of phase time overcurrent 1 has dropped out PHASE TOC1 DPO C Phase C of phase time overcurrent 1 has dropped out PHASE TOC2 to 6 Same set of operands as shown for PHASE TOC1 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-139...
  • Page 264 Delta connected VT. Same set of operands as shown for SRC1 VT FF SRC2 VT FUSE FAIL to SRC6 5-140 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 265 Trip bus TRIP BUS 1 OP Asserted when the trip bus 1 element operates TRIP BUS 2 to 6 Same set of operands as shown for TRIP BUS 1 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-141...
  • Page 266 Asserted while the RxGOOSE double-point status input is off RxG DPS 1 ON Asserted while the RxGOOSE double-point status input is on RxG DPS 2 to 5 Same set of operands as per RxG DPS 1 5-142 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 267 Communications source of the reset command RESET OP (OPERAND) Operand (assigned in the INPUTS/OUTPUTS  RESETTING menu) source of the reset command RESET OP (PUSHBUTTON) Reset key (pushbutton) source of the reset command C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-143...
  • Page 268 ‘1’ 2 to 16 all inputs are ‘1’ 2 to 16 all inputs are ‘0’ NAND 2 to 16 any input is ‘0’ only one input is ‘1’ 5-144 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 269: Flexlogic Rules

    If this rule is broken, a syntax error is declared. 5.6.3 FlexLogic evaluation Each equation is evaluated in the ascending order in which the parameters have been entered. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-145...

  • Page 270: Flexlogic Example

    H1 (that is, contact output H1). Therefore, the required logic can be implemented with two FlexLogic equations with outputs of virtual output 3 and virtual output 4, shown as follows. 5-146 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 271 It is generally easier to start at the output end of the equation and work back towards the input, as shown in the following steps. It is also recommended C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-147...
  • Page 272 The result of this process is shown in the figure, which is compared to the logic for virtual output 3 diagram as a check. 5-148 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 273 Now check that the selection of parameters produce the required logic by converting the set of parameters into a logic diagram. The result is shown in the figure, which is compared to the logic for virtual output 4 diagram as a check. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-149...
  • Page 274 Always test the logic after it is loaded into the relay, in the same way as has been used in the past. Testing can be 5-150 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 275: Flexlogic Equation Editor

    Range: Off, any analog actual value parameter  FLEXELEMENT 1 INPUT Range: SIGNED, ABSOLUTE  MODE: SIGNED FLEXELEMENT 1 COMP Range: LEVEL, DELTA  MODE: LEVEL FLEXELEMENT 1 Range: OVER, UNDER  DIRECTION: OVER C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-151...
  • Page 276 FLEXELEMENT 1 +IN this setting is set to “Off.” For proper operation of the element, at least one input must be selected. Otherwise, the element does not assert its output operands. 5-152 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 277 FlexElement 1 OpSig 842705A1.CDR In conjunction with the setting, the element can be programmed to provide two extra FLEXELEMENT 1 INPUT MODE characteristics, as shown in the following figure. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-153...
  • Page 278 BASE = 1 µs FREQUENCY = 1 Hz BASE PHASE ANGLE ϕ = 360 degrees (see the UR angle referencing convention) BASE POWER FACTOR = 1.00 BASE RTDs BASE = 100°C 5-154 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 279: Non-Volatile Latches

    LATCH 1 TYPE — If asserted, the specified FlexLogic operands 'sets' Latch 1. LATCH 1 SET — If asserted, the specified FlexLogic operand 'resets' Latch 1. LATCH 1 RESET C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-155...

  • Page 280: Overview

    Each of the six setting group menus is identical. Setting group 1 (the default active group) is active automatically when no other group is active. If the device incorrectly switches to group 1 after power cycling, upgrade the firmware to version 7.31 or later to correct this issue. 5-156 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 281: Phase Current

     UNBALANCE 3 5.7.3.2 Inverse TOC curve characteristics The inverse time overcurrent curves used by the time overcurrent elements are the IEEE, IEC, GE Type IAC, and I t standard curve shapes. This allows for simplified coordination with downstream devices.
  • Page 282 15.213 9.729 7.783 6.753 6.102 5.647 5.307 5.041 4.827 38.634 22.819 14.593 11.675 10.130 9.153 8.470 7.960 7.562 7.241 51.512 30.426 19.458 15.567 13.507 12.204 11.294 10.614 10.083 9.654 5-158 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 283 2.250 1.929 1.688 1.500 IEC Curve C 0.05 3.200 1.333 0.500 0.267 0.167 0.114 0.083 0.063 0.050 0.040 0.10 6.400 2.667 1.000 0.533 0.333 0.229 0.167 0.127 0.100 0.081 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-159...
  • Page 284 3.635 2.133 1.474 1.115 0.893 0.743 0.636 0.556 27.183 11.987 4.846 2.844 1.966 1.487 1.191 0.991 0.848 0.741 10.0 33.979 14.983 6.058 3.555 2.457 1.859 1.488 1.239 1.060 0.926 5-160 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 285 6.25 4.00 2.78 2.04 1.56 1.23 1.00 10.00 444.44 250.00 111.11 62.50 40.00 27.78 20.41 15.63 12.35 10.00 100.00 4444.4 2500.0 1111.1 625.00 400.00 277.78 204.08 156.25 123.46 100.00 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-161...
  • Page 286 = Reset Time in seconds (assuming energy capacity is 100% and RESET: Timed) RESET Recloser curves The C70 uses the FlexCurve feature to facilitate programming of 41 recloser curves. See the FlexCurves settings section earlier in this chapter for details. 5.7.3.3 Phase time overcurrent (ANSI 51P, IEC PTOC) SETTINGS ...
  • Page 287 — Selects the signal source for the phase time overcurrent protection element. SIGNAL SOURCE — Selects how phase current input quantities are interpreted by the C70. Inputs can be selected as fundamental INPUT phasor magnitudes or total waveform RMS magnitudes as required by the application.
  • Page 288 Range: 0.00 to 600.00 s in steps of 0.01  DELAY: 0.00 s PHASE IOC1 RESET Range: 0.00 to 600.00 s in steps of 0.01  DELAY: 0.00 s 5-164 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 289 PHASE DIR 1 SIGNAL Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6  SOURCE: SRC 1 PHASE DIR 1 BLOCK: Range: FlexLogic operand  C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-165...
  • Page 290 (phase current) and the polarizing signal (the line voltage, shifted in the leading direction by the characteristic angle, ECA). The table shows the operating and polarizing signals used for phase directional control. 5-166 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 291 When set to "No," the directional element allows tripping of phase overcurrent elements under directional control. — This setting enables and disables the logging of phase directional overcurrent events in the PHASE DIR 1 EVENTS sequence of events recorder. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-167...
  • Page 292 Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6  SOURCE: SRC 1 CUR UNBALCE 1 INHNT Range: –0.1000 to 0.1000 in steps of 0.0001  FACTOR A: 0.0000  5-168 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 293 TARGET: Self-Reset CUR UNBALCE 1 Range: Disabled, Enabled  EVENTS: Disabled Up to three identical phase current unbalance elements, one per each CT/VT module configured in hardware, are provided. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-169...
  • Page 294 Setting the compensating factors to zero effectively disables the compensation and turns this feature into a plain overcurrent element responding to the differential (split phase) currents. 5-170 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 295: Neutral Current

    Figure 5-81: Phase current unbalance logic 5.7.4 Neutral current 5.7.4.1 Menu SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  NEUTRAL CURRENT  NEUTRAL CURRENT  NEUTRAL TOC1 See below     C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-171...
  • Page 296   UNBALANCE 3 The C70 contains protection elements for neutral time overcurrent (ANSI device 51G), neutral instantaneous overcurrent (ANSI device 50G), and neutral current unbalance (ANSI device 60N). A maximum of six ground time overcurrent and 12 ground instantaneous overcurrent elements are available, dependent on the CT/VT modules ordered with the relay. Three neutral current unbalance elements are available.
  • Page 297 — This setting selects the signal source for the neutral time overcurrent protection element. NEUTRAL TOC1 SIGNAL SOURCE — This setting selects how neutral current input quantities are interpreted by the C70. Inputs can be NEUTRAL TOC1 INPUT selected as fundamental phasor magnitudes or total waveform RMS magnitudes as required by the application.
  • Page 298 — This setting enables and disables the logging of neutral instantaneous overcurrent events in the NEUTRAL IOC1 EVENTS sequence of events recorder. Figure 5-83: Neutral IOC1 logic 5-174 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 299 • System unbalances under heavy load conditions • Transformation errors of current transformers (CTs) during double-line and three-phase faults • Switch-off transients during double-line and three-phase faults C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-175...
  • Page 300 REV LA = 80° (reverse limit angle = the ± angular limit with the ECA for operation) Take the bias into account when using the neutral directional overcurrent element to directionalize other protection elements. 5-176 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 301 "Current" polarizing is performed if the current polarizing signal is valid. If neither of them is valid, neither forward nor reverse indication is given. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-177...
  • Page 302 — This setting defines the pickup level for the overcurrent unit of the element in the reverse NEUTRAL DIR OC1 REV PICKUP direction. When selecting this setting, keep in mind that the design uses a positive-sequence restraint technique for the “Calculated 3I0” mode of operation. 5-178 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 303 Range: 0.001 to 5.000 pu in steps of 0.001  STG 1 PKP: 0.020 pu NTRL CUR UNBALCE 1 Range: 0.0 to 10.% in steps of 0.1  STG 1 SLOPE: 2.0% C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-179...
  • Page 304 The relay allows manual setting of the inherent unbalance factor or automatic setting via a dedicated command. For more information, see the Application of Settings chapter. 5-180 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 305 Under balanced conditions, the amount of the spill current measured in the neutral connection between the banks is proportional to the positive-sequence component of the total current of the two banks. This setting defines the angle of C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-181...
  • Page 306 High-set instantaneous protection on energization can be provided by a separate instantaneous overcurrent function. Figure 5-87: Neutral current unbalance logic 5-182 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 307: Ground Current

    — This setting selects the signal source for the ground time overcurrent protection element. GROUND TOC1 SIGNAL SOURCE — This setting selects how ground current input quantities are interpreted by the C70. Inputs can be GROUND TOC1 INPUT selected as fundamental phasor magnitudes or total waveform RMS magnitudes as required by the application.
  • Page 308 Range: 0.00 to 600.00 s in steps of 0.01  DELAY: 0.00 s GROUND IOC1 BLOCK: Range: FlexLogic operand  GROUND IOC1 Range: Self-reset, Latched, Disabled  TARGET: Self-reset GROUND IOC1 Range: Disabled, Enabled  EVENTS: Disabled 5-184 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 309: Negative Sequence Current

    NEG SEQ TOC1 Range: 0.000 to 30.000 pu in steps of 0.001  PICKUP: 1.000 pu NEG SEQ TOC1 Range: see Overcurrent Curve Types table  CURVE: IEEE Mod Inv C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-185...
  • Page 310  DELAY: 0.00 s NEG SEQ IOC1 RESET Range: 0.00 to 600.00 s in steps of 0.01  DELAY: 0.00 s NEG SEQ IOC1 BLOCK: Range: FlexLogic operand  5-186 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 311 Range: 0.000 to 0.500 in steps of 0.001  SEQ RESTRAINT: 0.063 NEG SEQ DIR OC1 FWD Range: 0 to 90° Lag in steps of 1  ECA: 75° Lag C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-187...
  • Page 312 CT errors, since the current is low. The operating quantity depends on the way the test currents are injected into the C70. For single phase injection •...
  • Page 313 (see the Application of Settings chapter for information on how to calculate this setting). In regular applications, the offset impedance ensures C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-189...
  • Page 314 When NEG SEQ DIR OC1 TYPE selecting this setting, keep in mind that the design uses a positive-sequence restraint technique. Figure 5-93: Negative-sequence directional OC1 logic 5-190 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 315: Breaker Failure (Ansi 50Bf)

    Range: 0.001 to 30.000 pu in steps of 0.001  PICKUP: 1.050 pu BF1 LOSET TIME Range: 0.000 to 65.535 s in steps of 0.001  DELAY: 0.000 s C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-191...
  • Page 316 When the scheme is initiated, it immediately sends a trip signal to the breaker initially signaled to trip (this feature is usually described as re-trip). This reduces the possibility of widespread tripping that results from a declaration of a failed breaker. 5-192 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 317 FAULT cycles OCCURS 827083A6.CDR The current supervision elements reset in less than 0.7 of a power cycle for any multiple of pickup current as shown in the following figure. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-193...
  • Page 318 In microprocessor relays this time is not significant. In C70 relays, which use a Fourier transform, the calculated current magnitude ramps-down to zero one power frequency cycle after the current is interrupted, and this lag needs to be included in the overall margin duration, as it occurs after current interruption.
  • Page 319 Upon operation of the breaker failure element for a single pole trip command, a three-pole trip command needs to be given via output operand BKR FAIL 1 TRIP OP C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-195...
  • Page 320 GROUPED ELEMENTS CHAPTER 5: SETTINGS Figure 5-96: Single-pole breaker failure initiate logic 5-196 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 321 CHAPTER 5: SETTINGS GROUPED ELEMENTS Figure 5-97: Single-pole breaker failure, timers logic C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-197...
  • Page 322 GROUPED ELEMENTS CHAPTER 5: SETTINGS Figure 5-98: Three-pole breaker failure, initiate logic 5-198 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 323 CHAPTER 5: SETTINGS GROUPED ELEMENTS Figure 5-99: Three-pole breaker failure, timers logic C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-199...

  • Page 324: Voltage Elements

    The undervoltage protection feature can be used to either cause a trip or generate an alarm when the voltage drops below a specified voltage setting for a specified time delay. 5-200 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 325 PHASE UV1 MODE: Range: Phase to Ground, Phase to Phase  Phase to Ground PHASE UV1 Range: 0.000 to 3.000 pu in steps of 0.001  PICKUP: 1.000 pu C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-201...
  • Page 326 Range: 0.00 to 600.00 s in steps of 0.01  DELAY: 1.00 s PHASE OV1 RESET Range: 0.00 to 600.00 s in steps of 0.01  DELAY: 1.00 s 5-202 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 327 Range: 0.00 to 600.00 s in steps of 0.01  DELAY: 1.00 s NEUTRAL OV1 RESET: Range: 0.00 to 600.00 s in steps of 0.01  DELAY: 1.00 s NEUTRAL OV1 BLOCK: Range: FlexLogic operand  C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-203...
  • Page 328 There is one negative-sequence overvoltage element available per CT bank, to a maximum of three. Use the negative-sequence overvoltage element to detect loss of one or two phases of the source, a reversed phase sequence of voltage, or a non-symmetrical system voltage condition. 5-204 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 329 Range: Disabled, Enabled  Disabled The C70 contains one auxiliary overvoltage element for each VT bank. This element is intended for monitoring overvoltage conditions of the auxiliary voltage. The nominal secondary voltage of the auxiliary voltage channel entered under SYSTEM is the per-unit (pu) base used when setting the SETUP ...
  • Page 330 Range: 0.001 to 1.000 pu in steps of 0.001  PICKUP: 0.040 pu VOLTAGE DIF 1 STG 1C Range: 0.001 to 1.000 pu in steps of 0.001  PICKUP: 0.010 pu 5-206 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 331 An automatic setting procedure is available under the COMMAND menu to calculate automatically the matching factor when installing the relay or after repairs of the bank. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-207...
  • Page 332 A to C in per-units (pu) of the nominal bus voltage. A value of 1 pu is a product of the nominal secondary voltage and VT ratio of the voltage bank configured under the bus source of this function. Four independent stages are provided for each phase of protection. 5-208 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 333 BANK OV 1 Range: Disabled, Enabled   FUNCTION: Disabled BANK OV 1 BUS Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6  SOURCE: SRC 1 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-209...
  • Page 334 0.25 s BANK OV 1 BLK: Range: FlexLogic operand  BANK OV 1 TARGET: Range: Self-reset, Latched, Disabled  Self-Reset BANK OV 1 EVENTS: Range: Disabled, Enabled  Disabled 5-210 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 335 The VT ratio and secondary nominal voltage are set under the SETTINGS  SYSTEM SETUP  AC INPUTS  VOLTAGE BANK menu. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-211...
  • Page 336 — This input is used to block the function when required; in particular, when the bank is offline. BANK OV 1 BLK 5-212 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 337 Range: 0.0 to 10.0% in steps of 0.1  STG 1 SLOPE: 0.0% NTRL VOL UNBAL 1 Range: 0.001 to 1.000 pu in steps of 0.001  STG 2 PKP: 0.020 pu C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-213...
  • Page 338 The slope of the operating characteristic is user adjustable, and if required, it can be effectively removed yielding a straight compensated overvoltage function. For information, see the Application of Settings chapter. 5-214 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 339 — Selects the grounding arrangement of the bank. For ungrounded banks, set it to “VT NTRL VOL UNBAL 1 GROUND (ungrnd)”. When the bank neutral is solidly grounded through the CT with a resistor in the CT secondary, set it as “CTxR (grnd)”. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-215...
  • Page 340 The function becomes blocked if all four blocking inputs are asserted. The individual blocking inputs inhibit the associated stages of the function. 5-216 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 341: Overview

      FUNCTION: Disabled TRIP BUS 1 BLOCK: Range: FlexLogic operand  TRIP BUS 1 PICKUP Range: 0.00 to 600.00 s in steps of 0.01  DELAY: 0.00 s C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-217...

  • Page 342: Trip Bus

    — These settings select a FlexLogic operand to be assigned as an input to the trip TRIP BUS 1 INPUT 1 TRIP BUS 1 INPUT 16 bus. 5-218 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 343: Setting Groups

    The active setting group can be indicated on the front display of the UR by configuring User- ELEMENTS Programmable LEDs to display the state of the FlexLogic operands. SETTING GROUP ACT C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-219...

  • Page 344: Selector Switch

    SETTINGS  CONTROL ELEMENTS  SELECTOR SWITCH  SELECTOR SWITCH 1(2)  SELECTOR SWITCH 1 SELECTOR 1 FUNCTION: Range: Disabled, Enabled   Disabled SELECTOR 1 FULL Range: 1 to 7 in steps of 1  RANGE: 7 5-220 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 345 (position 1). Consecutive pulses of this control operand must not occur faster than every 50 ms. After each rising edge of the assigned operand, the time-out timer is restarted and the SELECTOR SWITCH 1: POS Z CHNG INITIATED target C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-221...
  • Page 346 If the position restored from memory is out of range, position 0 (no output operand selected) is applied and an alarm is set ( SELECTOR 1 PWR ALARM 5-222 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 347 The selector position pre-selected via the three-bit control input has not been confirmed before the time The following figures illustrate the operation of the selector switch. In these diagrams, “T” represents a time-out setting. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-223...
  • Page 348 3BIT A1 3BIT A2 POS 1 POS 2 POS 3 POS 4 POS 5 POS 6 POS 7 BIT 0 BIT 1 BIT 2 STP ALARM BIT ALARM ALARM 842737A1.CDR 5-224 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 349 SETTINGS  CONTROL ELEMENTS  SETTING GROUPS : “Enabled” SETTING GROUPS FUNCTION : “Off” SETTING GROUPS BLK : “SELECTOR 1 POS 2" GROUP 2 ACTIVATE ON : “SELECTOR 1 POS 3" GROUP 3 ACTIVATE ON C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-225...
  • Page 350 3-bit acknowledge SELECTOR 1 BIT ALARM 3-bit position out SELECTOR 1 ALARM SELECTOR 1 PWR ALARM SELECTOR 1 BIT 0 SELECTOR 1 BIT 1 SELECTOR 1 BIT 2 842012A2.CDR 5-226 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 351 The time of day timer function provides the ability to program control actions based on real time. There are five identical timers, each with an independent start and stop time setting. Each timer is on when the C70 real-time clock/calendar value is later than its programmed start time, and earlier than its programmed stop time.

  • Page 352: Time Of Day Timers

    CAP 1 TRIP 1: Range: FlexLogic operand   CAP 1 TRIP 6: Range: FlexLogic operand  CAP 1 SWITCH TO Range: Yes, No  MANUAL ON TRIP: Yes 5-228 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 353  Disabled The C70 is provided with optional capacity bank control. This feature is specified as an option at the time of ordering. See the Order Codes section in chapter 2 for details. The capacitor control element gathers on/off commands from various sources and executes them, while maintaining remote/local and auto/manual control rights.
  • Page 354 FlexLogic, and the resulting virtual output can be configured under this setting. — Sets a maximum close seal-in duration for where the setting is not CAP 1 CLOSE SEAL-IN DELAY CAP BKR CLSD 52a configured or fails to operate. 5-230 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 355 — Selects a FlexLogic operand that overrides all inhibits for the breaker close command and allows the CAP 1 CLS OVERRIDE CLOSE command to be issued from any source as per the logic diagram. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-231...
  • Page 356 CAP 1 1 CLS OVERRIDE: OFF = 0 CAP 1 AUTO CLOSE Off = 0 OFF = 0 SETTINGS CAP 1 CLOSE SEAL-IN DELAY FLEXLOGIC OPERAND CAP 1 BKR CLOSE 834740A1.DWG 5-232 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 357: Automatic Voltage Regulator

    The automatic voltage regulator element (AVR) is intended to switch a static capacitor bank breaker open and closed to regulate system voltage, load voltage, power factor, or reactive power. The figure shows some applications. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-233...
  • Page 358 For the latter preference, set the var open mode to “Minimize No. of Ops” (minimize number of operations) and set the var open level to the negative of the close level. 5-234 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 359 — In the voltage mode, this setting specifies the voltage level at or above which to issue the open AVR 1 VOLT LEVEL TO OPEN command. The following figure illustrates voltage control level settings. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-235...
  • Page 360 — Specifies a dynamic blocking condition. When blocked the element resets its output flags and internal AVR 1 BLOCK timers. VT fuse fail is a typical application. 5-236 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 361: Digital Elements

    PICKUP LED: Enabled DIG ELEM 1 BLOCK: Range: FlexLogic operand  DIGITAL ELEMENT 1 Range: Self-reset, Latched, Disabled  TARGET: Self-reset DIGITAL ELEMENT 1 Range: Disabled, Enabled  EVENTS: Disabled C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-237...
  • Page 362 In most breaker control circuits, the trip coil is connected in series with a breaker auxiliary contact that is open when the breaker is open (see figure). To prevent unwanted alarms in this situation, the trip circuit monitoring logic must include the breaker position. 5-238 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 363 Using the contact input settings, this input is given an ID name, for example, “Cont Ip 1," and is set “On” when the breaker is closed. The settings to use digital element 1 to monitor the breaker trip circuit are indicated (EnerVista example shown). C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-239...

  • Page 364: Digital Counters

    FUNCTION: Disabled  COUNTER 1 NAME: Range: 12 alphanumeric characters  Counter 1 COUNTER 1 UNITS: Range: six alphanumeric characters  COUNTER 1 PRESET: Range: –2,147,483,648 to +2,147,483,647  5-240 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 365 If control power is interrupted, the accumulated and frozen values are saved into non-volatile memory during the power-down operation. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-241...

  • Page 366: Monitoring Elements

     PROTECTION 5.8.10.2 Breaker flashover SETTINGS  CONTROL ELEMENTS  MONITORING ELEMENTS  BREAKER FLASHOVER 1  BREAKER BKR 1 FLSHOVR Range: Disabled, Enabled   FLASHOVER 1 FUNCTION: Disabled 5-242 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 367 Voltages must be present prior to flashover conditions. If the three VTs are placed after the breaker on the line (or feeder), and the downstream breaker is open, the measured voltage is zero and the flashover element is not NOTE initiated. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-243...
  • Page 368 This application does not require detection of breaker status via a 52a contact, as it uses a voltage difference larger than setting. However, monitoring the breaker contact ensures scheme stability. BRK 1 FLSHOVR DIFF V PKP 5-244 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 369 (all line breakers open), to well above the maximum line (feeder) load (line/feeder connected to load). C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-245...
  • Page 370 A six-cycle time delay applies after the selected FlexLogic operand resets. — This setting specifies the time delay to operate after a pickup condition is detected. BRK FLSHOVR PKP DELAY 5-246 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 371 CHAPTER 5: SETTINGS CONTROL ELEMENTS Figure 5-130: Breaker flashover logic C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-247...
  • Page 372  EVENTS: Disabled One breaker restrike element is provided for each CT/VT module in the C70. According to IEEE standard C37.100 entitled IEEE Standard Definitions for Power Switchgear, restrike is defined as “a resumption of current between the contacts of a switching device during an opening operation after an interval of zero current of ¼...
  • Page 373 — Assigns a FlexLogic operand indicating a breaker close command. It must be logic “1” when the BRK RSTR 1 CLS CMD breaker is closed. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-249...
  • Page 374 — Enables and disables the VT neutral wire open detection function. When the VT is NEUTRAL WIRE OPEN 1 DETECTION connected in Delta, do not enable this function because there is no neutral wire for Delta connected VT. 5-250 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 375 Range: 0.20 to 3.00 pu in steps of 0.01  BASE CURR: 0.80 pu THERMAL PROTECTION 1 Range: 1.00 to 1.20 in steps of 0.05  k FACTOR: 1.10 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-251...
  • Page 376 The reset time of the thermal overload protection element is also time delayed using following formula:   τ × ------------------------ - Eq. 5-23     – where τ = thermal protection trip time constant = a minimum reset time setting 5-252 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 377 IEC255-8 cold curve or hot curve equations op(In) is the reset time calculated at index n as per the reset time equation rst(In) C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-253...

  • Page 378: Inputs/Outputs

    The figure shows the logic for the thermal overload protection element. Figure 5-136: Thermal overload protection logic 5.9 Inputs/outputs 5.9.1 Contact inputs SETTINGS  INPUTS/OUTPUTS  CONTACT INPUTS  CONTACT INPUTS   CONTACT INPUT H5a   5-254 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 379 The DC input voltage is compared to a user-settable threshold. A new contact input state must be maintained for a user-settable debounce time in order for the C70 to validate the new contact state. In the following figure, the debounce time is set at 2.5 ms;...

  • Page 380: Virtual Inputs

    Range: Disabled, Enabled   FUNCTION: Disabled VIRTUAL INPUT 1 ID: Range: up to 12 alphanumeric characters  Virt Ip 1 VIRTUAL INPUT 1 Range: Self-Reset, Latched  TYPE: Latched 5-256 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 381: Contact Outputs

    Upon startup of the relay, the main processor determines from an assessment of the modules installed in the chassis which contact outputs are available and then present the settings for only these outputs. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-257...
  • Page 382 Disabled The C70 latching output contacts are mechanically bi-stable and controlled by two separate (open and close) coils. As such they retain their position even if the relay is not powered up. The relay recognizes all latching output contact cards and populates the setting menu accordingly.
  • Page 383 A make before break functionality must be added to the preceding example. An overlap of 20 ms is required to implement this functionality. Write the following FlexLogic equation (EnerVista example shown). C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-259...

  • Page 384: Virtual Outputs

    : "Trip" VIRTUAL OUTPUT 1 ID : "Disabled" VIRTUAL OUTPUT 1 EVENTS 5.9.5 Resetting SETTINGS  INPUTS/OUTPUTS  RESETTING  RESETTING RESET OPERAND: Range: FlexLogic operand   5-260 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 385: Direct Inputs And Outputs

    SETTINGS  INPUTS/OUTPUTS  DIRECT OUTPUTS  DIRECT OUTPUT 1(32)  DIRECT OUTPUT 1 DIRECT OUT 1 NAME: Range: up to 12 alphanumeric characters   Dir Out 1 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-261...
  • Page 386 A simple interlocking busbar protection scheme can be accomplished by sending a blocking signal from downstream devices, say 2, 3 and 4, to the upstream device that monitors a single incomer of the busbar, as shown in the figure. 5-262 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 387 (if any default state is set to “On”), or to trip the bus on any overcurrent condition (all default states set to “Off”). Example 3: Pilot-aided schemes Consider a three-terminal line protection application shown in the following figure. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-263...
  • Page 388 5" (forward a message from 1 to 3) DIRECT OUT 3 OPERAND "DIRECT INPUT 6" (forward a message from 3 to 1) DIRECT OUT 4 OPERAND The figure shows the signal flow among the three IEDs. 5-264 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 389: Transducer Inputs/Outputs

    VALUE: 0.000 The C70 is provided with optional DCmA capability. This feature is specified as an option at the time of ordering. See the Order Codes section in chapter 2 for details. Hardware and software are provided to receive signals from external transducers and to convert these signals into a digital format for use as required.

  • Page 390: Rtd Inputs

    FlexElements, the operate level is scaled to a base of 100°C. For example, a trip level of 150°C is achieved by setting the operate level at 1.5 pu. FlexElement operands are available to FlexLogic for further interlocking or to operate an output contact directly. 5-266 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 391: Dcma Outputs

    Range: –90.000 to 90.000 pu in steps of 0.001  MIN VAL: 0.000 pu DCMA OUTPUT F1 Range: –90.000 to 90.000 pu in steps of 0.001  MAX VAL: 1.000 pu C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-267...
  • Page 392 The setting is entered in per-unit values. The base units are defined in the same manner as the FlexElement base units. 5-268 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 393 The minimum and maximum power values to be monitored (in pu) are: 0 kA 6.3 kA minimum current --------- - 0 pu, maximum current ------------- - 1.26 pu Eq. 5-34 5 kA 5 kA C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-269...

  • Page 394: Testing

    0.005 × 230.94 kV + 1.27 kV = 2.42 kV. 5.11 Testing 5.11.1 Test mode function SETTINGS  TESTING  TEST MODE FUNCTION  TESTING TEST MODE Range: Disabled, Isolated, Forcible  FUNCTION: Disabled  5-270 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 395: Test Mode Forcing

    CHAPTER 5: SETTINGS TESTING The C70 provides a test facility to verify the functionality of contact inputs and outputs, some communication channels and the phasor measurement unit (where applicable), using simulated conditions. The test mode can be in any of three states: Disabled, Isolated, or Forcible.

  • Page 396: Force Contact Inputs

    If set to “Freeze,” the output retains its position at the instant before the was Forcible and the TEST MODE FUNCTION operand selected by the setting was On, regardless of later changes in the status of the operand TEST MODE FORCING 5-272 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 397 While the selected operand is Off, the output behaves as it does when in service. On restart, the setting and the force contact input and force contact output settings revert TEST MODE FORCING to their default states. NOTE C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-273...
  • Page 398 TESTING CHAPTER 5: SETTINGS 5-274 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 399: Actual Values

    See page 6-5    SELECTOR SWITCHES See page 6-5    TIME OF DAY TIMERS See page 6-6    FLEX STATES See page 6-6   C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 400  OSCILLOGRAPHY See page 6-21    DATA LOGGER See page 6-21     ACTUAL VALUES  MODEL INFORMATION See page 6-22   PRODUCT INFO  C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 401: Status

    Range: On, Off  The C70 is provided with optional IEC 61850 capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chapter 2 for details. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 402: Rxgoose Dps Inputs

    Range: On, Off, Intermediate, Bad  The C70 is provided with optional IEC 61850 capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chapter 2 for details. 6.2.5 Contact outputs ACTUAL VALUES ...

  • Page 403: Rxgoose Statistics

    Range: On, Off  The C70 is provided with optional IEC 61850 capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chapter 2 for details. actual value does not consider RxGOOSE that are not configured or are not used by any RxGOOSE All RxGOOSE Online Input.

  • Page 404: Time Of Day Timers

    These values indicate the status of the first, second, and third Ethernet links. 6.2.14 Real time clock synchronizing ACTUAL VALUES  STATUS  REAL TIME CLOCK SYNCHRONIZING  REAL TIME CLOCK RTC Sync Source: Range: see below   SYNCHRONIZING None C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 405: Direct Inputs

     COUNT CH1: 0 CRC FAIL COUNT  CH1: 0 AVG MSG RETURN  TIME CH2: 0 ms UNRETURNED MSG  COUNT CH2: 0 CRC FAIL COUNT  CH2: 0 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 406: Direct Devices Status

    UR over Ethernet, the Modbus TCP status shows 3. If the EnerVista application is closed, the Modbus TCP status shows 4. — The number of IEC 61850 connections remaining. MMS TCP C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 407: Parallel Redundancy Protocol (Prp)

    Range: 0 to 4G, blank if PRP disabled  The C70 is provided with optional PRP capability. This feature is specified as a software option at the time of ordering. See the Order Codes section in chapter 2 for details.
  • Page 408 All phasors calculated by URs and used for protection, control and metering functions are rotating phasors that maintain the correct phase angle relationships with each other at all times. 6-10 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 409 WYE-connected instrument transformers • ABC phase rotation: • ACB phase rotation: -- V -- V -- V -- V -- V -- V The above equations apply to currents as well. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 6-11...
  • Page 410 * The power system voltages are phase-referenced – for simplicity – to V and V , respectively. This, however, is a relative matter. It is important to remember that the C70 displays are always referenced as specified under SETTINGS  SYSTEM SETUP  POWER SYSTEM  FREQUENCY AND PHASE REFERENCE The example above is illustrated in the following figure.

  • Page 411: Sources

     0.000 A 0.0° SRC 1 PHASOR Ic:  0.000 A 0.0° SRC 1 PHASOR In:  0.000 A 0.0° SRC 1 ZERO SEQ I0:  0.000 A 0.0° C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 6-13...
  • Page 412  0.000 V 0.0° SRC 1 PHASOR Vbc:  0.000 V 0.0° SRC 1 PHASOR Vca:  0.000 V 0.0° SRC 1 ZERO SEQ V0:  0.000 V 0.0° 6-14 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 413 SRC 1 APPARENT PWR  φb: 0.000 VA SRC 1 APPARENT PWR  φc: 0.000 VA SRC 1 POWER FACTOR  3φ: 1.000 SRC 1 POWER FACTOR  φa: 1.000 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 6-15...
  • Page 414 S = V x Î x Î x Î Eq. 6-1 When VTs are configured in delta, the C70 does not calculate power in each phase and three-phase power is measured as S = V x Î x Î Eq. 6-2...

  • Page 415: Capacitor Control

    CAP 1 DISCHARGE TIME:    CAP 4 DISCHARGE TIME:  These values indicate the time remaining before the next permissible close operation for each of the four capacitor banks. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 6-17...

  • Page 416: Capacitor Bank

     UNBALANCE 1 Cm Iop A: 0.0000 pu Raw Id B: 0.0000 pu  Cm Iop B: 0.0000 pu Raw Id C: 0.0000 pu  Cm Iop C: 0.0000 pu 6-18 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 417: Tracking Frequency

    = maximum nominal primary RMS value of the +IN and –IN inputs BASE 6.3.7 RxGOOSE analogs ACTUAL VALUES  METERING  RxGOOSE Analogs  RxGOOSE RxGOOSE Analog 1   Analogs 0.000  RxGOOSE Analog 32  0.000 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 6-19...

  • Page 418: Transducer Inputs/Outputs

    RECORDS CHAPTER 6: ACTUAL VALUES The C70 is provided with optional GOOSE communications capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chapter 2 for details. The RxGOOSE Analog values display in this menu. The RxGOOSE Analog values are received via IEC 61850 GOOSE messages sent from other devices.

  • Page 419: Oscillography

    It counts up at the defined sampling NEWEST SAMPLE TIME rate. If the data logger channels are defined, then both values are static. See the menu for clearing data logger records. COMMANDS  CLEAR RECORDS C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 6-21...

  • Page 420: Product Information

    FPGA PROGRAM: Range: 0.00 to 655.35  REVISION: 01.05 Revision number for FPGA. FPGA DATA: Range: YYYY/MM/DD HH:MM:SS  2013/09/15 16:41:32 Date and time when the FPGA was built. 6-22 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 421 CHAPTER 6: ACTUAL VALUES PRODUCT INFORMATION The shown data is illustrative only. A modification file number of 0 indicates that, currently, no modifications have been installed. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 6-23...
  • Page 422 PRODUCT INFORMATION CHAPTER 6: ACTUAL VALUES 6-24 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 423: Commands And Targets

    The commands menu contains relay directives intended for operations personnel. All commands can be protected from unauthorized access via the command password; see the Security section of chapter 5 for details. The following flash message appears after successfully command entry. COMMAND EXECUTED C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 424: Capacitor Bank Automatic Setting

    After the process finishes, it is recommended to disable the auto-setting feature. If not disabled by the user, the feature disables itself when user-initiated front panel interface activity ceases and the C70 display dims itself. Certain security conditions are checked during the auto-setting process. This includes deviation from the nominal frequency and verifying that the magnitudes of all three bus voltages are between 0.85 and 1.15 pu.
  • Page 425 “Auto” to “Disabled” and 87V becomes operational. In essence, when in the “Auto” mode, the user confirmation is processed immediately after the balancing values become available. The C70 does not display the applied coefficients in “Auto” mode; rather, they are be viewed in the menu.
  • Page 426 “Auto” to “Disabled” and the 59NU function becomes operational. In essence, when in the “Auto” mode, the confirmation command executes automatically immediately after the balancing values are available. The C70 does not display the applied coefficients in the “Auto” mode; rather, they are be viewed in the menu.
  • Page 427 “Auto” to “Disabled” and the 60P element becomes operational. When in “Auto” mode, the automatic confirmation command executes immediately after the balancing values are available. The C70 does not display the applied coefficients in “Auto” mode; rather, they can be viewed in the menu.

  • Page 428: Virtual Inputs

    “Auto” to “Disabled,” and the 60N element becomes operational. In essence, when in “Auto” mode, the confirmation command executes automatically immediately after the balancing values become available. The C70 does not display the applied coefficients in the “Auto” mode; instead, they can be viewed in the menu.

  • Page 429: Set Date And Time

    “Yes” and pressing the key. The command setting then automatically ENTER reverts to “No.” The service command is activated by entering a numerical code and pressing the key. ENTER C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 430: Security

    Although the diagnostic information is cleared before the C70 is shipped from the factory, the user can want to clear the diagnostic information for themselves under certain circumstances. For example, you clear diagnostic information after replacement of hardware.

  • Page 431: Targets Menu

      Each C70 element with a TARGET setting has a target message that when activated by its element is displayed in sequence with any other currently active target messages in the menu. In the example shown, the Phase TOC4 and Digital TARGETS Element 48 target settings are active and so have their targets displayed.
  • Page 432 Contact Factory (xxx) • Latched target message: Yes. • Description of problem: One or more installed hardware modules is not compatible with the C70 order code. • How often the test is performed: Module dependent. • What to do: Contact the factory and supply the failure code noted in the display. The “xxx” text identifies the failed module (for example, F8L).
  • Page 433 If none of these apply, then contact the factory. MAINTENANCE ALERT: **Bad PTP Signal** • Latched target message: No. • Description of problem: No PTP enabled port has good PTP signal input. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 7-11...
  • Page 434 Description of problem: A direct device is configured but not connected. • How often the test is performed: Every second. • What to do: Check direct input and output configuration and wiring. RxGOOSE FAIL: Missing messages 7-12 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 435 Description of problem: The ambient temperature is greater than the maximum operating temperature (+80°C). • How often the test is performed: Every hour. • What to do: Remove the C70 from service and install in a location that meets operating temperature standards. UNEXPECTED RESTART: Press “RESET” key •...
  • Page 436 This self-test is initiated by low received signal levels at either the Brick or Process Card end, and by the sustained failure to receive poll responses from the proper Brick. 7-14 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 437 A latched target can be unlatched by pressing the faceplate reset key if the command has ended, however the output can still be non-functional. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 7-15...
  • Page 438 TARGETS MENU CHAPTER 7: COMMANDS AND TARGETS 7-16 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 439: Application Of Settings

    A capacitor bank using fused capacitors is configured using one or more series groups of parallel-connected capacitor units per-phase, as shown. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 440: Internally Fused Capacitors

    A fuseless capacitor bank typically is the most prevalent design. The capacitor units in the bank are connected in series strings between phase and neutral. The higher the bank voltage, the more capacitor elements in series. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 441: Unfused Capacitors

    However, the neutral should be insulated for full line voltage because it is momentarily at phase potential when the bank is switched or when one capacitor unit fails in a bank configured with a single group of units. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 442: Delta Connected Banks

    The figure summarizes the grounded wye, ungrounded wye, delta, H-bridge, and tapped connection types for capacitor banks. Figure 8-4: Capacitor bank connections Grounded wye Ungrounded wye Delta H-bridge Tapped 834756A1.CDR C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 443: Protection Methods For Capacitor Banks

    Capacitor unbalance protection is provided in many ways, depending on the capacitor bank arrangement. A variety of unbalance protection schemes can be applied with the C70 for internally fused, externally fused, fuseless, or unfused shunt capacitor banks, as shown in the rest of this section.
  • Page 444 The following figure illustrates a single capacitor bank, ungrounded, with a tap. In this case, two CT/VT modules are required. Figure 8-6: Single bank, ungrounded, with a tap C70 CAPACITOR BANK RELAY 59NU 834758A1.CDR C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 445 C70 CAPACITOR BANK RELAY 59NU 834760A1.CDR The following figure illustrates parallel capacitor banks, grounded, no tap available, and with current unbalance protection. In this case, two CT/VT modules are required. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 446 CTs for each bank. In this case, two CT/VT modules are required. Figure 8-10: Parallel banks, grounded, no tap, with current balance protection and high-side CTs C70 CAPACITOR BANK RELAY 834762A1.CDR C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 447 0.1 seconds is adequate. For unbalance relaying systems that operate on a system voltage unbalance (ground fault), a delay slightly longer than the upstream protection fault clearing time is required to avoid tripping due to a system fault. Longer delays increase the probability of catastrophic bank failure. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 448: Protection For Rack Faults (Arc-Over Within Capacitor Banks)

    Especially for very large EHV capacitor banks, it is advisable to install three-phase overvoltage protection (ANSI 59B) to trip the bank quickly for extreme overvoltage conditions. To avoid nuisance tripping during transient overvoltage conditions, in some cases, tripping is delayed by a timer. The C70 provides inverse time overvoltage characteristics required to decrease tripping time for large overvoltages.

  • Page 449: Overcurrent

    Each capacitor unit consisting of n = 6 series capacitors The figure shows details. Phase capacitors are connected to ground through a neutral capacitor rated Q = 167 kvar, V = 0.825 kV. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 8-11...

  • Page 450: Vt And Ct Setup

    834764A1.CDR Based on the bank configuration, CT connections, and VTs connections, a C70 model is chosen with three CT/VT modules: two type 8L modules (in slots F and U) and one type 8V module (in slot M) to provide following protection functionality.

  • Page 451: Source Assignment

    The following sources must be assigned for the protection functions indicated: • Source 1 (bus) is assigned with CT and VT banks connected to the bus, providing a signal source for overcurrent, phase current unbalance, overvoltage, and undervoltage functions C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 8-13...

  • Page 452: Bank Unbalance Calculations

    Eq. 8-11 1894.92Ω 2 ⁄ 2 ⁄ The maximum rated voltage across the healthy top section: × 81515.37 V 1890.34Ω × ---------------------- ------------------------------------------------------ - 81340.40 V Eq. 8-12 1894.92Ω 8-14 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 453 – unbal 1845.33Ω 50 × 1890.34Ω 50 × × × The following table summarizes the calculated values for the number of failed capacitors used to set the protection elements. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 8-15...

  • Page 454: Bank Voltage Differential Settings

    An 87V-2 differential element measuring the differential voltage between the upper capacitor string and bottom capacitor can for string 1 • An 87V-3 differential element measuring the differential voltage between the upper capacitor string and bottom capacitor can for string 2 8-16 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 455 VTs. These VTs must be blocked if one or both of them has a VT fuse failure condition. Therefore, as shown in the following figure, a blocking input for each element is created with FlexLogic. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 8-17...

  • Page 456: Bank Phase Current Unbalance Settings

    0.9 0.0209 pu × 0.019 pu Eq. 8-25 unbal f1_max Therefore, the alarm delay is specified as 10 seconds. The following setting values are programmed in the EnerVista UR Setup software. 8-18 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 457: Bank Phase Overvoltage Settings

    When the relay settings are calculated, the number of prospective overvoltage transients stressing the capacitor insulation during the bank lifetime must be taken into account. As such, it is preferable to set the relay conservatively. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 8-19...

  • Page 458: Bank Phase Undervoltage Settings

    0.7 pu with a time delay of 1 second, based on maximum fault clearing time. The bank undervoltage element is blocked during VT fuse fail conditions. The following setting values are programmed in the EnerVista UR Setup software. 8-20 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 459: Bank Overcurrent Protection

    10% of the nominal bank phase current with a delay of 250 to 400 ms typically provides adequate coordination for faults external to the bank and protection for internal rack faults. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 8-21...
  • Page 460 SETTINGS EXAMPLE CHAPTER 8: APPLICATION OF SETTINGS 8-22 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 461: Theory Of Operation

    However, this approach is seldom economic due to the large number of voltage transducers required. Thus, the C70 supports various other methods, the suitability of each dependant on the capacitor bank configuration, and on the VTs and CTs available.
  • Page 462 V -- V Eq. 9-2 As such, the A-string voltage is: -- V – – -- 2V Eq. 9-3 – – -- V – C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 463: Voltage Differential (Ansi 87V)

    For ungrounded banks, the neutral point voltage (V ) must be measured by the relay and used to derive the voltage across the string. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 464 , and the bank is energized with system phase-to-ground voltage V , then the string forms a voltage divider and the initial measured voltages are: Eq. 9-10 × ------- - Eq. 9-11 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 465 --------------------- - or C ------------------ - Eq. 9-17 – In this case, we have: ------- - × × – OP A ( ) Eq. 9-18 – × × ------------------ - – C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 466 Commands chapter. The C70 sets the operate signal to zero in equation 9.7 or 9.8 and solves for the match factor k using the average of several successive voltage measurements.

  • Page 467: Compensated Bank Neutral Voltage Unbalance (Ansi 59Nu)

    Figure 9-3: Compensated bank neutral overvoltage application 834745A1.CDR C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 468 -- 1 k -------- - Recall equation 9.29:       ---- - ---- - ---------------- - Eq. 9-34 – – –       C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 469 Note that under external fault conditions sensitivity can be much different form the non-fault sensitivity. To prevent mis- operation, use a restraint and/or coordinating time delay. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 470: Phase Current Unbalance (Ansi 60P)

    This equation involves phasors, not magnitudes; that is, the vector sum of the currents is created by the protection function implementing the method. 9-10 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 471 CT primary current rating. This places the string currents on the same base per-unit base used by the C70. Voltages are expressed in primary volts, capacitances in Farads, and frequency in radians per second. The differential current is the vector difference between the two currents: –...
  • Page 472 The technique that the relay uses is to set the operate signal variable to zero in equation 9.43 and solve for the inherent unbalance factor k using the average of several successive measurements of the currents. However, the 9-12 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 473: Neutral Current Unbalance (Ansi 60N)

    . The currents are as defined in the figure and are in per-unit values of the nominal current of the bank source ground current channel. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 9-13...
  • Page 474 – --------------------- - --------------------- - × --------------------- - I × × Label k , and k as follows: – – – --------------------- - --------------------- - --------------------- - Eq. 9-61 9-14 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 475 ---------------------------- - ------- - ≅ × The final step assumes and replaces the phase current vector with its magnitude. This can be written as: ≅ × ---------- - Eq. 9-66 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 9-15...
  • Page 476 A low ratio CT can be used for ungrounded-wye configurations in place of a window type CT as there is no requirement to form the difference of the primary neutral currents 9-16 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 477 In this situation, the base for ΔC(pu) is the capacitance of the string that has the element failure, so the larger bank has a lower sensitivity than the smaller bank. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 9-17...
  • Page 478 OVERVIEW CHAPTER 9: THEORY OF OPERATION 9-18 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 479: Maintenance

    This chapter outlines maintenance, repair, storage, and disposal of the hardware and software. 10.1 General maintenance The C70 requires minimal maintenance. As a microprocessor-based relay, its characteristics do not change over time. Expected service life is 20 years for UR devices manufactured June 2014 or later when applied in a controlled indoors environment and electrical conditions within specification.

  • Page 480: Unscheduled Maintenance (System Interruption)

    is the path and file name of the IID file. If omitted, the file is saved as ur.iid in the command window default directory. An example is TFTP 192.168.1.101 GET ur.iid Feeder1.iid 10-2 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 481: Restore Settings

    On a computer on the same subnetwork as the UR device, open a SFTP client application, such as WinSCP. Note that TFTP cannot be used here. Use the device's IP address as the host name. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 10-3...

  • Page 482: Upgrade Firmware

    EnerVista UR Setup software. 10.3 Upgrade firmware The firmware of the C70 device can be upgraded, locally or remotely, using the EnerVista software. Instructions are outlined here and in the Help file under the topic “Upgrading Firmware.”...

  • Page 483: Upgrade Software

    In EnerVista, click the Device Setup button. The window opens. Expand the entry for the UR device. Click the Read Order Code button. The order code and version of the device are populated to the software. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 10-5...

  • Page 484: Replace Module

    Figure 10-4: Modules inside relay with front cover open (enhanced faceplate) 842812A1.CDR The standard faceplate can be opened to the left once the black plastic sliding latch on the right side has been pushed up, as shown below. 10-6 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 485: Battery

    For the standard front panel, it needs to be removed in order to access the power supply module, which is typically in the first slot on the left side and blocked by the hinge of the front panel. To remove the front panel, unscrew its bracket C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 10-7...

  • Page 486: Replace Battery For Sh/Sl Power Supply

    Unclip the black plastic holder that keeps the battery in place. The plastic clips into the socket at the bottom on both sides. Use a flat-head screwdriver if you cannot unclip the plastic with your fingers. 10-8 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 487: Dispose Of Battery

    (Cd), bly (Pb) og kviksølv (Hg). Europæiske brugere af elektrisk udstyr skal aflevere kasserede produkter til genbrug eller til leverandøren. Yderligere oplysninger findes på webstedet www.recyclethis.info. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 10-9...
  • Page 488 (Cd), ólom (Pb) vagy higany (Hg) tartalomra utaló betűjelzés. A hulladék akkumulátor leadható a termék forgalmazójánál új akkumulátor vásárlásakor, vagy a kijelölt elektronikai hulladékudvarokban. További információ a www.recyclethis.info oldalon. 10-10 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 489 (Cd), chumbo (Pb), ou o mercúrio (hg). Para uma reciclagem apropriada envie a bateria para o seu fornecedor ou para um ponto de recolha designado. Para mais informação veja: www.recyclethis.info. C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 10-11...

  • Page 490: Clear Files And Data After Uninstall

    .urs files. For the existing installation, upgrading the firmware overwrites the flash memory. Other files can be in standard formats, such as COMTRADE or .csv. 10-12 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 491: Repairs

    Customers are responsible for shipping costs to the factory, regardless of whether the unit is under warranty. • Fax a copy of the shipping information to the GE Digital Energy service department in Canada at +1 905 927 5098. Use the detailed return procedure outlined at https://www.gedigitalenergy.com/multilin/support/ret_proc.htm...
  • Page 492 DISPOSAL CHAPTER 10: MAINTENANCE 10-14 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 493: A Flexanalog A.1 Flexanalog Items

    Amps Source 1 phase C current RMS 6150 SRC 1 In RMS Amps Source 1 neutral current RMS 6152 SRC 1 Ia Mag Amps Source 1 phase A current magnitude C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 494 Amps Source 3 neutral current RMS 6280 SRC 3 Ia Mag Amps Source 3 phase A current magnitude 6282 SRC 3 Ia Angle Degrees Source 3 phase A current angle C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 495 Source 5 phase A current magnitude 6410 SRC 5 Ia Angle Degrees Source 5 phase A current angle 6411 SRC 5 Ib Mag Amps Source 5 phase B current magnitude C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 496 Source 1 phase BG voltage magnitude 6667 SRC 1 Vbg Angle Degrees Source 1 phase BG voltage angle 6668 SRC 1 Vcg Mag Volts Source 1 phase CG voltage magnitude C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 497 SRC 2 V_2 Mag Volts Source 2 negative-sequence voltage magnitude 6763 SRC 2 V_2 Angle Degrees Source 2 negative-sequence voltage angle 6784 SRC 3 Vag RMS Volts Source 3 phase AG voltage RMS C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 498 SRC 4 Vx RMS Volts Source 4 auxiliary voltage RMS 6880 SRC 4 Vx Mag Volts Source 4 auxiliary voltage magnitude 6882 SRC 4 Vx Angle Degrees Source 4 auxiliary voltage angle C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 499 Source 6 phase CA voltage RMS 6997 SRC 6 Vab Mag Volts Source 6 phase AB voltage magnitude 6999 SRC 6 Vab Angle Degrees Source 6 phase AB voltage angle C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 500 SRC 2 Phase C PF Source 2 phase C power factor 7232 SRC 3 P Watts Source 3 three-phase real power 7234 SRC 3 Pa Watts Source 3 phase A real power C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 501 SRC 5 Phase B PF Source 5 phase B power factor 7323 SRC 5 Phase C PF Source 5 phase C power factor 7328 SRC 6 P Watts Source 6 three-phase real power C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 502 Source 1 phase A voltage twenty-fourth harmonic 8088 SRC 1 Va Harm[23] Source 1 phase A voltage twenty-fifth harmonic 8089 SRC 1 Vb THD Source 1 phase B voltage total harmonic distortion (THD) A-10 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 503 Source 1 phase C voltage twenty-first harmonic 8135 SRC 1 Vc Harm[20] Source 1 phase C voltage twenty-second harmonic 8136 SRC 1 Vc Harm[21] Source 1 phase C voltage twenty-third harmonic C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL A-11...
  • Page 504 Source 2 phase B voltage eighteenth harmonic 8182 SRC 2 Vb Harm[17] Source 2 phase B voltage nineteenth harmonic 8183 SRC 2 Vb Harm[18] Source 2 phase B voltage twentieth harmonic A-12 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 505 Source 3 phase A voltage fifteenth harmonic 8229 SRC 3 Va Harm[14] Source 3 phase A voltage sixteenth harmonic 8230 SRC 3 Va Harm[15] Source 3 phase A voltage seventeenth harmonic C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL A-13...
  • Page 506 Source 3 phase C voltage twelfth harmonic 8276 SRC 3 Vc Harm[11] Source 3 phase C voltage thirteenth harmonic 8277 SRC 3 Vc Harm[12] Source 3 phase C voltage fourteenth harmonic A-14 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 507 Source 4 phase B voltage ninth harmonic 8323 SRC 4 Vb Harm[8] Source 4 phase B voltage tenth harmonic 8324 SRC 4 Vb Harm[9] Source 4 phase B voltage eleventh harmonic C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL A-15...
  • Page 508 Source 5 phase A voltage sixth harmonic 8370 SRC 5 Va Harm[5] Source 5 phase A voltage seventh harmonic 8371 SRC 5 Va Harm[6] Source 5 phase A voltage eighth harmonic A-16 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 509 Source 5 phase C voltage third harmonic 8417 SRC 5 Vc Harm[2] Source 5 phase C voltage fourth harmonic 8418 SRC 5 Vc Harm[3] Source 5 phase C voltage fifth harmonic C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL A-17...
  • Page 510 Source 6 phase A voltage twenty-fifth harmonic 8464 SRC 6 Vb THD Source 6 phase B voltage total harmonic distortion (THD) 8465 SRC 6 Vb Harm[0] Source 6 phase B voltage second harmonic A-18 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 511 Source 6 phase C voltage twenty-second harmonic 8511 SRC 6 Vc Harm[21] Source 6 phase C voltage twenty-third harmonic 8512 SRC 6 Vc Harm[22] Source 6 phase C voltage twenty-fourth harmonic C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL A-19...
  • Page 512 Source 1 phase B current nineteenth harmonic 10292 SRC 1 Ib Harm[18] Source 1 phase B current twentieth harmonic 10293 SRC 1 Ib Harm[19] Source 1 phase B current twenty-first harmonic A-20 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 513 Source 2 phase A current sixteenth harmonic 10355 SRC 2 Ia Harm[15] Source 2 phase A current seventeenth harmonic 10356 SRC 2 Ia Harm[16] Source 2 phase A current eighteenth harmonic C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL A-21...
  • Page 514 Source 2 phase C current thirteenth harmonic 10418 SRC 2 Ic Harm[12] Source 2 phase C current fourteenth harmonic 10419 SRC 2 Ic Harm[13] Source 2 phase C current fifteenth harmonic A-22 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 515 Source 3 phase B current tenth harmonic 10481 SRC 3 Ib Harm[9] Source 3 phase B current eleventh harmonic 10482 SRC 3 Ib Harm[10] Source 3 phase B current twelfth harmonic C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL A-23...
  • Page 516 Source 4 phase A current seventh harmonic 10544 SRC 4 Ia Harm[6] Source 4 phase A current eighth harmonic 10545 SRC 4 Ia Harm[7] Source 4 phase A current ninth harmonic A-24 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 517 Source 4 phase C current fourth harmonic 10607 SRC 4 Ic Harm[3] Source 4 phase C current fifth harmonic 10608 SRC 4 Ic Harm[4] Source 4 phase C current sixth harmonic C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL A-25...
  • Page 518 Source 5 phase B current total harmonic distortion 10670 SRC 5 Ib Harm[0] Source 5 phase B current second harmonic 10671 SRC 5 Ib Harm[1] Source 5 phase B current third harmonic A-26 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 519 Source 5 phase C current twenty-third harmonic 10725 SRC 5 Ic Harm[22] Source 5 phase C current twenty-fourth harmonic 10726 SRC 5 Ic Harm[23] Source 5 phase C current twenty-fifth harmonic C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL A-27...
  • Page 520 Source 6 phase B current twentieth harmonic 10788 SRC 6 Ib Harm[19] Source 6 phase B current twenty-first harmonic 10789 SRC 6 Ib Harm[20] Source 6 phase B current twenty-second harmonic A-28 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 521 DCmA Inputs 16 Value DCmA input 16 actual value 13536 DCmA Inputs 17 Value DCmA input 17 actual value 13538 DCmA Inputs 18 Value DCmA input 18 actual value C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL A-29...
  • Page 522 RTD Inputs 39 Value RTD input 39 actual value 13591 RTD Inputs 40 Value RTD input 40 actual value 13592 RTD Inputs 41 Value RTD input 41 actual value A-30 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 523 59NU2Ntrl-p Vx Mag Neutral voltage unbalance 2 neutral-point Vx magnitude 14084 59NU2Vop Neutral voltage unbalance 2 neutral-point Vx operating voltage 14086 59NU2Vrest Neutral voltage unbalance 2 neutral-point Vx restraining voltage C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL A-31...
  • Page 524 V0 3rd Harmonic 2 Volts VTFF 2 V0 3rd Harmonic 41142 V0 3rd Harmonic 3 Volts VTFF 3 V0 3rd Harmonic 41144 V0 3rd Harmonic 4 Volts VTFF 4 V0 3rd Harmonic A-32 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 525 GOOSE analog input 28 45640 RxGOOSE Analog29 GOOSE analog input 29 45642 RxGOOSE Analog30 GOOSE analog input 30 45644 RxGOOSE Analog31 GOOSE analog input 31 45646 RxGOOSE Analog32 GOOSE analog input 32 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL A-33...
  • Page 526 FLEXANALOG ITEMS APPENDIX A: FLEXANALOG OPERANDS A-34 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

  • Page 527: B Radius Server Configuration

    UR device for successful authentication, and the shortname is a short, optional alias that can be used in place of the IP address. client 10.0.0.2/24 { secret = testing123 shortname = private-network-1 In the \etc\raddb folder, create a file called dictionary.ge and add the following content. # ########################################################## GE VSAs ############################################################ VENDOR...
  • Page 528 8.2. Access Settings > Product Setup > Security. Configure the IP address and ports for the RADIUS server. Leave the GE vendor ID field at the default of 2910. Update the RADIUS shared secret as specified in the clients.conf file.

  • Page 529: Revision History

    C.1 Warranty For products shipped as of 1 October 2013, GE Digital Energy warrants most of its GE manufactured products for 10 years. For warranty details including any limitations and disclaimers, see the GE Digital Energy Terms and Conditions at https://www.gedigitalenergy.com/multilin/warranty.htm...
  • Page 530 Added Far-End Fault Indication (FEFI) section 5-56 Deleted Ethernet Global Data (EGD) settings, which do not apply to the C70 Added Software Upgrade section to the Maintenance chapter Moved communications appendices B through F to new UR Series Communications Guide for UR 7.3x AB1...
  • Page 531 Communication File Transfer Protocol COMM Communications FlexElement™ COMP Compensated, Comparison Forward CONN Connection CONT Continuous, Contact Generator CO-ORD Coordination General Electric Central Processing Unit Ground Cyclic Redundancy Code/Check GNTR Generator C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 532 MegaVolt-Ampere (total 3-phase) RGT BLD Right Blinder MVA_A MegaVolt-Ampere (phase A) Return Materials Authorization MVA_B MegaVolt-Ampere (phase B) Root Mean Square MVA_C MegaVolt-Ampere (phase C) ROCOF Rate of Change of Frequency C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 533 Phase A to B voltage Phase A to Ground voltage VARH Var-hour voltage Phase B voltage Phase B to A voltage Phase B to Ground voltage Phase C voltage Phase C to A voltage C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 534 ABBREVIATIONS C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 535 FlexLogic operands ...............5-136 Authentication by device or server ...........5-15 settings ....................5-117 Automatic discovery of UR devices ...........3-42 Automatic voltage regulator FlexLogic operands ...............5-134 logic diagram ...................5-237 settings ....................5-233 specifications ..................2-17 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 536 Current harmonics specifications ..........2-24 TFTP port ....................5-75 Current metering actual values ..........6-13 Web access ..................5-74 Web access port ................5-74 Comm status remaining connections ........6-8 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 537 ..................3-38 settings ....................5-237 restart relay ..................5-45 Digital outputs Engineer command to force logoff ..........7-8 see Contact outputs Dimensions ..................3-2, 3-3 Direct devices settings ....................5-261 status ......................6-8 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 538 Frequency tracking ................6-19 Flash memory ..................10-12 Frequency, nominal ................ 5-114 Flash messages ................... 5-25 Flex State parameters actual values ..................6-6 settings ....................5-101 specifications ..................2-22 FlexAnalog parameters ..............A-1 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 539 ................... 4-12 port, close .....................5-74 software ....................4-1 Humidity specifications ..............2-31 Internet access ..................5-74 Hysteresis ....................5-153 Inter-relay communication specifications ......2-30 Inverse time undervoltage ............5-201 see Phase, Ground, and Neutral IOCs C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 540 ....................5-187 settings for redundancy ............... 5-32 specifications ..................2-19 TxGOOSE ....................5-50 Negative sequence IOC FlexLogic operands ..............5-138 logic diagram .................. 5-187 settings ....................5-186 specifications ..................2-18 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 541 ......................5-28 specifications ..................2-20 Part numbering ..................2-7 theory of operation ................9-7 Non-volatile latches FlexLogic operands ...............5-137 settings ....................5-155 specifications ..................2-22 One-shot FlexLogic operators ..............5-145 Operating temperature ..............2-31 Operating times ..................2-17 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 542 ..................2-17 user-programmable logic diagrams ........5-100 Phase undervoltage user-programmable settings ............. 5-96 FlexLogic operands ...............5-140 user-programmable specifications ......... 2-23 logic diagram ...................5-202 settings ....................5-201 specifications ..................2-20 viii C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 543 Setting groups ..............5-156, 5-219 RFI, conducted specifications ............2-32 active setting group ..............5-156 RMS voltage specifications ............2-24 FlexLogic operands ...............5-140 RS232 troubleshooting ................5-156 baud rate ....................5-28 configuration ..................3-43 specifications ..................2-29 wiring ......................3-22 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 544 ................5-114 Traceability System logs .................... 5-24 data ......................4-11 System requirements ............... 3-38 overview ....................4-10 System setup ..................5-112 rules ......................4-12 view data ....................4-11 Tracking frequency ................6-19 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 545 ...... 4-26, 5-9 VT inputs ................3-11, 5-6, 5-113 User-definable displays VT wiring ....................3-12 example ....................5-103 VTFF ......................5-250 invoking and scrolling ..............5-102 settings ....................5-102 specifications ..................2-22 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...
  • Page 546 Wire size CT/VT ...................... 3-11 G.703 interface .................. 3-28 RS422 interface ................3-31 Wiring diagram ..................3-9 Withdrawal from operation ............10-12 Wrong transceiver message ............7-13 Zero-sequence core balance ............3-12 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL...

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