6 F 2 S 0 7 8 9 Safety Precautions Before using this product, be sure to read this chapter carefully. This chapter describes safety precautions when using the GRT100. Before installing and using the equipment, read and understand this chapter thoroughly. Explanation of symbols used Signal words such as DANGER, WARNING, and two kinds of CAUTION, will be followed by important safety information that must be carefully reviewed.
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6 F 2 S 0 7 8 9 DANGER Current transformer circuit Never allow the current transformer (CT) secondary circuit connected to this equipment to be opened while the primary system is live. Opening the CT circuit will produce a dangerous high voltage.
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6 F 2 S 0 7 8 9 Disposal When disposing of this product, do so in a safe manner according to local regulations. This product contains a lithium-ion battery, which should be removed at the end-of-life of the product.
6 F 2 S 0 7 8 9 Contents Safety Precautions Introduction Application Notes 2.1 Application 2.2 Protection Scheme 2.3 Current Differential Protection 2.3.1 Differential Scheme 2.3.2 Matching of CT Secondary Currents 2.3.3 Connection between CT Secondary Circuit and the GRT100 2.3.4 Setting 2.4 Restricted Earth Fault Protection 2.5 Overcurrent Protection...
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6 F 2 S 0 7 8 9 3.3.3 Failure Alarms 3.3.4 Trip Blocking 3.3.5 Setting 3.4 Recording Function 3.4.1 Fault Recording 3.4.2 Event Recording 3.4.3 Disturbance Recording 3.5 Metering Function User Interface 4.1 Outline of User Interface 4.1.1 Front Panel 4.1.2 Communication Ports 4.2 Operation of the User Interface 4.2.1 LCD and LED Displays...
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6 F 2 S 0 7 8 9 6.5.1 Measuring Element 6.5.2 Timer Test 6.5.3 Protection Scheme 6.5.4 Metering and Recording 6.6 Conjunctive Tests 6.6.1 On Load Test 6.6.2 Tripping Circuit Test 6.7 Maintenance 6.7.1 Regular Testing 6.7.2 Failure Tracing and Repair 6.7.3 Replacing Failed Modules 6.7.4 Resumption of Service 6.7.5 Storage...
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6 F 2 S 0 7 8 9 Appendix A Block Diagram Appendix B Signal List Appendix C Variable Timer List Appendix D Binary Output Default Setting List Appendix E Details of Relay Menu and LCD & Button Operation Appendix F Case Outline Appendix G External Connections Appendix H Relay Setting Sheet Appendix I...
6 F 2 S 0 7 8 9 1. Introduction The GRT100 provides transformer protection for two- or three- winding power transformers connected to single, double or a one-and-a-half busbar system. The GRT100 is member of the G-series numerical relays which are built on common hardware modules and featured with the following functions: ...
6 F 2 S 0 7 8 9 2. Application Notes 2.1 Application The GRT100 provides high-speed transformer and reactor protection, and realises high dependability and security for diverse faults such as single-phase faults, multi-phase faults, overload and over-excitation. The GRT100 is used as a main protection and backup protection of the following transformers and reactors.
6 F 2 S 0 7 8 9 2.2 Protection Scheme GRT100 provides the following protection schemes with measuring elements in parentheses. Appendix A shows block diagrams of the GRT100 series. Current differential protection (DIFT) Restricted earth fault protection (1REF-3REF) ...
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6 F 2 S 0 7 8 9 GRT100 1OC/1OCI Calculate 3I 0 1REF 1nCT 1EF/1EFI 3nCT DIFT 2nCT 2OC/2OCI Calculate 3I 0 2REF 2EF/2EFI 3OC/3OCI Calculate 3I 0 3EF/3EFI 3REF Figure 2.2.2 Measuring Elements of Model 200s 11 ...
6 F 2 S 0 7 8 9 2.3 Current Differential Protection 2.3.1 Differential Scheme Current differential protection DIFT provides an overall transformer protection deriving phase current from each transformer winding, calculating the differential current on a per phase basis and detecting phase-to-phase and phase-to-earth faults.
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6 F 2 S 0 7 8 9 phases of 2F element. Protection by DIF and HOC can perform instantaneous three-phase tripping of up to five breakers. Any of the five breaker tripping signals DIFT-1 to DIFT-5 are enabled or disabled by the scheme switch [DIF1] to [DIF5] settings.
6 F 2 S 0 7 8 9 2.3.2 Matching of CT Secondary Currents In order to restrain erroneous differential currents, the currents supplied to the differential elements must be matched in phase and amplitude under through-load and through-fault conditions. In GRT100, the matching is performed through the settings.
6 F 2 S 0 7 8 9 2.3.3 Connection between CT Secondary Circuit and the GRT100 The GRT100 is provided with 2 or 3 three-phase current input terminals depending on the relay models. To validate the phase angle matching mentioned above and input in-phase current of each winding to the relay, connect the CT secondary circuits to the current input terminal of the relay as follows;...
6 F 2 S 0 7 8 9 2.3.4 Setting The following shows the setting elements necessary for the current differential protection and their setting ranges. The setting can be performed on the LCD screen or PC screen. Element Range Step Default Remarks...
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6 F 2 S 0 7 8 9 CT accuracy error (generally considered as 5%) Tap error: Error between maximum/minimum tap and the middle tap when taking the middle tap of the tap changer as a reference. Matching error: The error due to CT mismatch may be small enough to be neglected in the setting.
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6 F 2 S 0 7 8 9 current accurately. The kct range (from 2.00 to 8.00) is enough to operate the protection relay correctly. When the value of the kct is set larger than 8 (that is, the kct value is set form 8.00 to 50.00), the protection relay can operate depending on the actual input of analog current and the DIFT settings.
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6 F 2 S 0 7 8 9 reference winding and set 0 (= noon) for it. For other star- or delta-connected winding(s), set according to the Rule 1 mentioned above. Example 1 If the setting winding leads the reference winding by 60, set 2 (= two o’clock). Example 2 If the setting winding is in phase with the reference winding, set 0 (= noon).
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6 F 2 S 0 7 8 9 Table 2.3.2 Setting for Phase Angle Matching (a) Settings for typical connections of 2-windings transformer Transformer connections Settings for phase angle correction Remarks described in IEC60076-1 Primary , Secondary (d1) , (d2) Based on primary winding.
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6 F 2 S 0 7 8 9 (b) Settings for typical connections of 3-windings transformer Transformer connections described in Settings for phase angle correction IEC60076-1 Remarks Primary, Secondary, Tertiary (d1) (d2) (d3) Yy0d1 Yy0d11 Yd1d1 Yd11d11 Dy11d0 Dy1d0 Dd0d0 Yy0y0 Note : If all the windings are star-connected, then take one of the windings as a reference winding...
6 F 2 S 0 7 8 9 2.4 Restricted Earth Fault Protection Restricted earth fault protection (REF) is a zero-phase current differential scheme and applied for a star-connected winding whose neutral is earthed directly or through a low impedance. It gives highly sensitive protection for internal earth faults.
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6 F 2 S 0 7 8 9 Setting The following shows the setting elements for the restricted earth fault protection and their setting ranges. Element Range Step Default Remarks 1REF 0.05 0.50(*) 0.01 0.50 Minimum operating current 1.00 50.00 1kct1 0.01 1.00...
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6 F 2 S 0 7 8 9 Setting of kct (1kct1-1kct3, 2kct1-2kct3 and 3kct1-3kct3) CT ratio matching is performed between the line CT(s) and the neutral CT by setting 1kct1-1kct3 for 1REF element, 2kct1-2kct3 for 2REF element and 3kct1-3kct3 for 3REF element. The settings are obtained as a ratio of the line CTs ratio to the neutral CT ratio and the line CTs have the notations shown in the Appendix L according to 1REF to 3REF applications.
6 F 2 S 0 7 8 9 2.5 Overcurrent Protection GRT100 provides definite time and inverse time overcurrent elements for both phase faults and earth faults, separately for each transformer winding. Three phase currents from each set of line CTs are used for the phase fault protection elements, while the earth fault protection is based on the neutral CT input.
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6 F 2 S 0 7 8 9 Setting The following shows the setting elements for the overcurrent protection and their setting ranges. Element Range Step Default Remarks 0.10 20.0(*) 0.01 2.00 Definite time overcurrent (line) 0.10 20.0(*) 0.01 2.00 Definite time overcurrent (line)
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6 F 2 S 0 7 8 9 The overcurrent elements use three-phase line currents and neutral current together with the differential protection and the restricted earth fault protection. For the setting, following relations between the overcurrent elements and the applying windings must be noticed. 1OC, 1OCI : Primary (high-voltage) winding 2OC, 2OCI :...
6 F 2 S 0 7 8 9 2.6 Thermal Overload Protection The thermal overload protection is applied to protect transformers from electrical thermal damage. A-phase current is used to detect the thermal overload of a transformer. The characteristics are exponential functions according to IEC 60255-8 standards and take into account the I R losses due to the particular operational current and the simultaneous cooling due to the coolant.
6 F 2 S 0 7 8 9 2.7 Frequency Protection GRT100 provides an underfrequency or overfrequency protection and/or alarms for load shedding or for detecting such an overfrequency condition caused by disconnecting load from a particular generation location. The frequency element FRQ comprises two frequency elements 81-1 and 81-2, the former is used for tripping and the latter for alarms.
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6 F 2 S 0 7 8 9 Setting The following shows the setting elements for the frequency protection and their setting ranges. Element Range Step Default Remarks 45.00 55.00Hz 81-1 (L1, H1) 0.01Hz 49.00Hz Trip (54.00 66.00Hz 0.01Hz 59.00Hz) (*) 45.00 ...
6 F 2 S 0 7 8 9 2.8 Overexcitation Protection Overexcitation protection is applied to protect transformers from overvoltage and overfluxing conditions. Any single phase-to-phase connected voltage is used to detect overexcitation. Trip and alarm characteristics, which are based on a measurement of the voltage/frequency ratio, are provided. Figure 2.8.1 shows the scheme logic of overexcitation protection.
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6 F 2 S 0 7 8 9 Setting The following shows the setting elements for the overexcitation protection and their setting ranges. Element Range Step Default Remarks 100.0 120.0V 0.1V 100.0V Transformer rated voltage / VT ratio ( ) 1.03 ...
6 F 2 S 0 7 8 9 2.9 Trip by External Devices Up to four binary signals MECANICAL TRIP1 to MECANICAL TRIP4 can be used for tripping external devices. Figure 2.9.1 shows the scheme logic for the signal MECANICAL TRIP1. The signal can trip up to five breakers.
6 F 2 S 0 7 8 9 2.10 Tripping Output Figure 2.10.1 shows the tripping logic. Each protection can output five tripping signals to enable tripping for five breakers. The tripping signals are set according to the number of breakers to be tripped and drive the high-speed tripping output relays TRIP-1 to TRIP-5.
6 F 2 S 0 7 8 9 2.11 Characteristics of Measuring Elements 2.11.1 Percentage Current Differential Element DIF The segregated-phase current differential element DIF has dual percentage restraining characteristics. Figure 2.11.1 shows the characteristics of DF1 and DF2 on the differential current (I d ) and restraining current (I r ) plane.
6 F 2 S 0 7 8 9 CT saturation during through faults. 2.11.2 High-set Overcurrent Element HOC High-set overcurrent element HOC is an instantaneous overcurrent characteristic, and is applied in the differential circuit. The characteristic is expressed by the following equation: I d ...
6 F 2 S 0 7 8 9 = |1kct1I + 1kct2I + 1kct3I = max.( |1kct1I |, |1kct1I |, |I1kct1I |, |1kct2I |, |1kct2I |, |1kct2I |, |1kct3I |1kct3I |, |kct3I |, |I where, : residual current of primary, secondary and tertiary winding : phase current of primary, secondary and tertiary winding : residual current of neutral circuit 1kct1, 1kct2, 1kct3: CT ratio matching of primary, secondary and tertiary line CT to neutral...
6 F 2 S 0 7 8 9 T=1.0 Operating time Long-time Inverse Standard Inverse Very Inverse Extremely Invease Current I (Multiple of setting current) Figure 2.11.3 Characteristics of Inverse Time Overcurrent Element 2.11.5 Definite Time Overcurrent element OC and EF The OC and EF elements measure the phase currents and the residual current respectively.
6 F 2 S 0 7 8 9 2.11.6 Thermal Overload Element THR Thermal overload element THR has a characteristic based on thermal replica according to IEC 60255-8 standards (see Appendix N), which evaluates the phase current (A-phase) of CT secondary circuits.
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6 F 2 S 0 7 8 9 Thermal Curves (Cold Curve - no prior load) 10000 1000 0.01 Overload Current (Multiple of kI Figure 2.11.5 Thermal Curves 43 ...
6 F 2 S 0 7 8 9 2.11.7 Frequency Element FRQ GRT100 has two elements for trip or alarm. Each element operates either in overfrequency or underfrequency. 2.11.8 Overexcitation Element V/F The characteristic is based on the ratio of voltage to frequency. The alarm is definite time delayed, while the tripping characteristic is either definite time or inverse time, as shown in Figure 2.11.6.
6 F 2 S 0 7 8 9 3. Technical Description 3.1 Hardware Description 3.1.1 Outline of Hardware Modules Case outline of GRT100 is shown in Appendix F. The hardware structures of their models are shown in Figure 3.1.1 and Figure 3.1.2. The front view shows the equipment without the human machine interface module.
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6 F 2 S 0 7 8 9 IO2 SPM IO1 Figure 3.1.2 Hardware Structure (Model: 102, 202) The correspondence between each model and module used is as follows: Models Module ...
6 F 2 S 0 7 8 9 3.1.2 Transformer Module The transformer module (VCT module) insulates between the internal and external circuits through an auxiliary transformer and transforms the magnitude of AC input signals to suit the electronic circuits. The AC input signals are as follows: ...
6 F 2 S 0 7 8 9 3.1.3 Signal Processing Module As shown in Figure 3.1.5, the signal processing module (SPM) consists of an analogue filter, multiplexer, analogue to digital (A/D) converter and main processing units (MPU) and executes all kinds of processing such as protection, measurement, recording and display.
6 F 2 S 0 7 8 9 3.1.4 Binary Input and Output Module There are four types of binary input and output module (IO module): IO1 to IO3. IO1 and IO2 are used for all the relay models, while IO3 is used depending on the model (see Section 3.1.1). 3.1.4.1 IO1 Module As shown in Figure 3.1.6, the IO1 module incorporates a DC/DC converter, 13 photo-coupler...
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6 F 2 S 0 7 8 9 3.1.4.2 IO2 Module As shown in Figure 3.1.7, the IO2 module incorporates 3 photo-coupler circuits (BI14-BI16) for binary input signals, 14 auxiliary relays (BO1-BO13 and FAIL) for binary output signals and RS-485 transceivers. The auxiliary relay FAIL has one normally closed contact, and operates when a relay failure or abnormality in the DC circuit is detected.
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6 F 2 S 0 7 8 9 3.1.4.3 IO3 Module The IO3 module is used to increase the number of binary inputs or the number of binary outputs. The IO3 module incorporates 10 auxiliary relays (BO1-BO10) for binary outputs. All auxiliary relays each have one normally open contact.
6 F 2 S 0 7 8 9 3.1.5 Human Machine Interface (HMI) Module The operator can access the GRT100 via the human machine interface (HMI) module. As shown in Figure 3.1.9, the HMI module has a liquid crystal display (LCD), light emitting diodes (LED), view and reset keys, operation keys, testing jacks and an RS-232C connector on the front panel.
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6 F 2 S 0 7 8 9 TRANSFORMER PROTECTION GRT100 101B-21-11 Operation keys Figure 3.1.9 Front Panel 54 ...
6 F 2 S 0 7 8 9 3.2 Input and Output Signals 3.2.1 Input Signals AC input signals Table 3.2.1 shows the AC input signals necessary for each of the GRT100 models and their respective input terminal numbers. See Appendix G for external connections. Winding 1, 2 and 3 in the Table correspond to high-voltage or primary, medium-voltage or secondary, and low-voltage or tertiary winding respectively.
6 F 2 S 0 7 8 9 Signal List +(ON) BOTD (OFF) & Auxiliary relay Appendix C & 6 GATES ≧1 0.2s ≧1 6 GATES Figure 3.2.2 Configurable Output 3.2.3 PLC (Programmable Logic Controller) Function GRT100 is provided with a PLC function allowing user-configurable sequence logics on binary signals.
6 F 2 S 0 7 8 9 3.3 Automatic Supervision 3.3.1 Basic Concept of Supervision Though the protection system is in a non-operating state under normal conditions, it is waiting for a power system fault to occur at any time and must operate for the fault without fail. Therefore, the automatic supervision function, which checks the health of the protection system during normal operation by itself, plays an important role.
6 F 2 S 0 7 8 9 Watchdog Timer A hardware timer which is cleared periodically by software is provided and it is checked that the software is running normally. DC Supply monitoring The secondary voltage level of the built-in DC/DC converter is monitored and checked that the DC voltage is within a prescribed range.
6 F 2 S 0 7 8 9 Watchdog Timer DC supply monitoring When a failure is detected by the AC input imbalance monitoring, the scheme switch [SVCNT] setting can be used to determine if both tripping is blocked and an alarm is initiated, or, if only an alarm is initiated.
6 F 2 S 0 7 8 9 3.4 Recording Function The GRT100 is provided with the following recording functions: Fault recording Event recording Disturbance recording These records are displayed on the LCD of the relay front panel or on the local or remote PC. 3.4.1 Fault Recording Fault recording is started by a tripping command of the GRT100 or PLC command by...
6 F 2 S 0 7 8 9 - Magnitude and phase angle of phase current of each winding (I a1 , I b1 , I c1 up to I a3 , I b3 , I c3 ) - Magnitude and phase angle of neutral current of each winding (I n1 up to I n3 ) - Magnitude and phase angle of symmetrical component current of each winding (I 11 , I 21 , I 01 up to I 13 , I 23 , I 03 ) - Magnitude and phase angle of phase-to-phase voltage (V)
6 F 2 S 0 7 8 9 Setting The recording mode can be set for each event. One of the following four modes is selectable. Modes Setting Not to record the event. None To record the event when the status changes to "operate". Operate To record the event when the status changes to "reset".
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6 F 2 S 0 7 8 9 Table 3.4.2 Post Fault Recording Time and Number of Disturbance Records Stored Recording Model 0.1s 0.5s 1.0s 1.5s 2.0s 2.5s 3.0s time Frequency 50HZ 60Hz 50HZ 60Hz Disturbance recording is initiated when overcurrent elements operate, a tripping signal is output, 2F or 5F element operates or external event signals are input.
6 F 2 S 0 7 8 9 3.5 Metering Function The GRT100 performs continuous measurement of the analogue input quantities. The measurement data shown below are displayed on the LCD of the relay front panel or on the local or remote PC.
6 F 2 S 0 7 8 9 4. User Interface 4.1 Outline of User Interface The user can access the relay from the front panel. Local communication with the relay is also possible using a personal computer (PC), equipped with the RSM (Relay Setting and Monitoring) software via an RS232C port.
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6 F 2 S 0 7 8 9 Operation keys The operation keys are used to display records, status, and set values on the LCD, as well as to input or change set values. The function of each key is as follows: ...
6 F 2 S 0 7 8 9 4.1.2 Communication Ports The following three interfaces are provided as communication ports: RS232C port RS485 port IRIG-B port RS232C port This connector is a standard 9-way D-type connector (straight type) for serial port RS232C transmission and is mounted on the front panel.
6 F 2 S 0 7 8 9 36-pin terminal block 20-pin terminal block IRIG BNC connector PORT-1 PORT-2 (COM1) RS485 (COM2) connection terminal Figure 4.1.1 Locations of Communication Port 4.2 Operation of the User Interface The user can access such functions as recording, measurement, relay setting and testing with the LCD display and operation keys.
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6 F 2 S 0 7 8 9 In for neutral current L a t e s t f a u l t 0 8 / D e c / 1 9 9 7 2 2 : 5 6 : * * . * * * P h a s e T r i p 1 - 2 - 3 - 4 - 5...
6 F 2 S 0 7 8 9 While any of the menu screens is displayed, the VIEW and RESET keys do not function. To return to the digest "Auto-supervision" screen, do the following: Return to the top screen of the menu by repeatedly pressing the END key. ...
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6 F 2 S 0 7 8 9 Menu Record Fault record Event record Disturbance record Status Metering Binary input & output Relay element Time synchronization source Clock adjustment Setting (view) Relay version Description Communication Record Status Protection Binary input Binary output Setting (change) Password...
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6 F 2 S 0 7 8 9 Record In the "Record" menu, the fault records, event records and disturbance records are displayed or erased. Status The "Status" menu displays the power system quantities, binary input and output status, relay measuring element status, signal source for time synchronization (IRIG-B, RSM, IEC or Modbus) and adjusts the clock.
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6 F 2 S 0 7 8 9 Select 2 (= Clear) to display the following confirmation screen. F a u l t r e c o r d C l e a r a l l f a u l t r e c o r d s ? E N T E R = Y e s C A N C E L = N o...
6 F 2 S 0 7 8 9 Open the top "MENU" screen by pressing any keys other than the VIEW and RESET keys. Select 1 (= Record) to display the "Record" sub-menu. Select 3 (= Disturbance record) to display the "Disturbance record" screen. r e c o r r b a n c e 2 = C l e a r...
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6 F 2 S 0 7 8 9 S t a t u s 1 = M e t e r i n g 2 = B i n a r y I / O 3 = R e l a y e l e m e n t 4 = T i m e s y n c...
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6 F 2 S 0 7 8 9 4.2.4.2 Displaying the Status of Binary Inputs and Outputs To display the binary input and output status, do the following: Select 2 (= Status) on the top "MENU" screen to display the "Status" screen. ...
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6 F 2 S 0 7 8 9 4.2.4.3 Displaying the Status of Measuring Elements To display the status of the measuring elements on the LCD, do the following: Select 2 (= Status) on the top "MENU" screen to display the "Status" screen. ...
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6 F 2 S 0 7 8 9 4.2.4.4 Displaying the Status of the Time Synchronization Source The internal clock of the GRT100 can be synchronized with external clocks such as the IRIG-B time standard signal clock, RSM (relay setting and monitoring system) clock, IEC60870-5-103 or Modbus.
6 F 2 S 0 7 8 9 4.2.5 Viewing the Settings The sub-menu "Setting (view)" is used to view the settings made using the sub-menu "Setting (change)" except for the relay version. The following items are displayed: Relay version Description Communication (Relay address and baud rate in the RSM, IEC60870-5-103 or Modbus) Recording setting...
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6 F 2 S 0 7 8 9 Protection Binary input Binary output All of the above settings except the password can be seen using the "Setting (view)" sub-menu. 4.2.6.1 Setting Method There are three setting methods as follows. - To enter a selective number - To enter numerical values - To enter a text string To enter a selected number...
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6 F 2 S 0 7 8 9 (On the lowest line, the entered number blinks.) After completing the setting on the screen, press the END key to return to the upper menu. To correct the entered number, do the following. ...
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6 F 2 S 0 7 8 9 (If a numerical value outside the displayed range is entered, "Error: Out of range" appears on the top line and the cursor remains on the line. Press the CANCEL key to clear the entry.) ...
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6 F 2 S 0 7 8 9 * * * * * * * * * * * * * * C h a n g e s e t t i n g s ? E N T E R = Y e s C A N C E L = N o ...
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6 F 2 S 0 7 8 9 Canceling or changing the password To cancel the password protection, enter "0000" in the two brackets on the "Password" screen. The "Setting (change)" screen is then displayed without having to enter a password. The password can be changed by entering a new 4-digit number on the "Password"...
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6 F 2 S 0 7 8 9 Press 1 (= Address) to enter the relay address number. A d d r e s s 3 2 ) : H D L C 5 4 ) : I E C 4 7 ) : M O D ...
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6 F 2 S 0 7 8 9 r e c o r d m o d e t i n g 2 = F a u l t Enter 1 or 2 and press the ENTER key. Enter 1 (= Operating) to display the operating phase. Enter 2 (= Fault) to display the fault phase.
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6 F 2 S 0 7 8 9 S c h e m e s w i t c 1 / 6 T R I P = O n T R I P 2 0 = O f f 1 = O n T R I P 0 = O f f 1 = O n...
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6 F 2 S 0 7 8 9 T i m e z o n e 1 / 1 G M T - 1 2 - + 1 2 ) : h r s Enter the difference between GMT and local time and press the ENTER key. 4.2.6.7 Protection The GRT100 can have 8 setting groups for protection according to the change of power system...
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6 F 2 S 0 7 8 9 parameter" screen. T r a n s f o r m e r p a r a m e t e r ( G r o u p 1 = V T &...
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6 F 2 S 0 7 8 9 1 / S c h e m e s w i t c h D I F T P M D 1 = 3 P O R 2 = 2 P A N D 1 R E F 1 = 1 I 0 2 = 2 I 0...
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6 F 2 S 0 7 8 9 D I F T 1 / 1 3 0 ) : 0 ) : 1 . 0 0 0 ) : 0 ) : 0 ) : 0 ) : Press 2 (= REF) to display the "REF" screen. The measuring elements and timers used in the restricted earth fault protection are set using this screen.
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6 F 2 S 0 7 8 9 Enter the numerical value and press the ENTER key for each element. After setting all elements, press the END key to return to the "Protection element" menu. 1 / 2 4 1 O C 0 .
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6 F 2 S 0 7 8 9 After setting all elements, press the END key to return to the “Protection element” menu. V / F 1 / 9 0 ) : 0 ) : 0 ) : 0 ) : 0 ) : 0 ) : 0 ) :...
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6 F 2 S 0 7 8 9 B i n a r y i n p u t 1 = N o r m 2 = I n v B I S W M e c h a n i c a l r i p B I S W r i p...
6 F 2 S 0 7 8 9 Setting the logic gate type and timer Press 1 to display the "Logic gate type and delay timer" screen. L o g i c g a t e t y p e &...
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6 F 2 S 0 7 8 9 4.2.7.1 Setting the switches The automatic monitor function (A.M.F.) can be disabled by setting the switch [A.M.F] to "OFF". Disabling the A.M.F. prevents tripping from being blocked even in the event of a failure in the items being monitored by this function.
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6 F 2 S 0 7 8 9 B i n a r y o u t p u t 1 = I O 1 2 = I O 2 3 = I O 3 The LCD displays the output modules mounted depending on the model. ...
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6 F 2 S 0 7 8 9 timers and related numbers are listed in Appendix C. Press the END key to display the following screen. T i m e r P r e s s E N T E R o p e r a t e .
6 F 2 S 0 7 8 9 4.3 Personal Computer Interface The relay can be operated from a personal computer using an RS-232C port on the front panel. On the personal computer, the following analysis and display of the fault voltage and current are available in addition to the items available on the LCD screen.
6 F 2 S 0 7 8 9 UTP cable (10Base-T) 214B-13-10 100/110/115/120V Other relays HUB. Relay Figure 4.4.2 Relay Setting and Monitoring System (2) 4.5 IEC 60870-5-103 Interface The GRT100 can support the IEC60870-5-103 communication protocol. This protocol is mainly used when the relay communicates with a control system and is used to transfer the following measurand, status data and general command from the relay to the control system.
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6 F 2 S 0 7 8 9 Automatic supervision Display of the system quantities on the digest screen Display of the fault records on the digest screen Display of the automatic monitoring results on the digest screen The calendar clock can run locally or be synchronized with the external IRIG-B time standard signal, RSM , IEC or Modbus clock.
6 F 2 S 0 7 8 9 5. Installation 5.1 Receipt of Relays When relays are received, carry out the acceptance inspection immediately. In particular, check for damage during transportation, and if any is found, contact the vendor. Check that the following accessories are attached. ...
6 F 2 S 0 7 8 9 the high reliability and long life for which the equipment has been designed and manufactured. CAUTION Before removing a module, ensure that you are at the same electrostatic potential as the equipment by touching the case.
6 F 2 S 0 7 8 9 6. Commissioning and Maintenance 6.1 Outline of Commissioning Tests The GRT100 is fully numerical and the hardware is continuously monitored. Commissioning tests can be kept to a minimum and need only include hardware tests and conjunctive tests.
6 F 2 S 0 7 8 9 6.2 Cautions 6.2.1 Safety Precautions CAUTION The relay rack is provided with a grounding terminal. Before starting the work, always make sure the relay rack is grounded. When connecting the cable to the back of the relay, firmly fix it to the terminal block and attach the cover provided on top of it.
6 F 2 S 0 7 8 9 6.3 Preparations Test equipment The following test equipment is required for the commissioning tests. 1 Single-phase voltage source 2 Single-phase current sources 1 Variable-frequency source 1 Combined fundamental and 2nd-harmonic adjustable current supply 1 Combined fundamental and 5th-harmonic adjustable current supply 1 DC power supply 1 DC voltmeter...
6 F 2 S 0 7 8 9 6.4 Hardware Tests The tests can be performed without external wiring, but DC power supply and AC voltage and current source are required. 6.4.1 User Interfaces This test ensures that the LCD, LEDs and keys function correctly. LCD display ...
6 F 2 S 0 7 8 9 6.4.3 Binary Output Circuit This test can be performed by using the "Test" sub-menu and forcibly operating the relay drivers and output relays. Operation of the output contacts is monitored at the output terminal. The output contact and corresponding terminal number are shown in Appendix G.
6 F 2 S 0 7 8 9 6.4.4 AC Input Circuits This test can be performed by applying the checking voltages and currents to the AC input circuits and verifying that the values applied coincide with the values displayed on the LCD screen.
6 F 2 S 0 7 8 9 6.5 Function Test 6.5.1 Measuring Element Measuring element characteristics are realized by the software, so it is possible to verify the overall characteristics by checking representative points. Operation of the element under test is observed by the binary output signal at monitoring jacks A or B or by the LED indications above the jacks.
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6 F 2 S 0 7 8 9 GRT100 TB 1 -1 Single-phase current source Monitoring jack TB 4 - A16 power - A17 supply voltmeter Figure 6.5.1 Operating Current Value Test Circuit (Model 100s, 200s) The output signal numbers of the DIF elements are as follows: Element Signal number...
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6 F 2 S 0 7 8 9 I out I in 2+p1 2p1 2 kp + 4 ik Figure 6.5.2 Current Differential Element (I out - I in Plane) Figure 6.5.3 shows a testing circuit simulating an infeed from a primary winding and outflow from a secondary winding.
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6 F 2 S 0 7 8 9 Press 4 (= Logic circuit) on the "Test" sub-menu screen to display the "Logic circuit" screen. Enter a signal number 44 to observe the DIF-A output at monitoring jack A and press the ENTER key.
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6 F 2 S 0 7 8 9 GRT100 TB 1 Single-phase current source Monitoring jack TB 4 - A16 power - A17 supply Start Time counter Stop Figure 6.5.4 Operating Time Test (Model 100s, 200s) Set a test current to 3 times of DIF operating current (= CT secondary rated current ik setting).
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6 F 2 S 0 7 8 9 6.5.1.2 2F element The testing circuit is shown in Figure 6.5.5. GRT100 Current TB 1 source 50 or 60Hz Current source 100 or 120Hz Monitoring jack TB 4 ...
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6 F 2 S 0 7 8 9 6.5.1.3 5F element The testing circuit is shown in Figure 6.5.6. GRT100 Current TB 1 source 50 or 60Hz Current source Monitoring 250 or 300Hz jack TB 4 ...
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6 F 2 S 0 7 8 9 6.5.1.4 High-set overcurrent element HOC Operating current value The testing circuit is shown in Figure 6.5.1. The output signal numbers of the HOC elements are as follows: Element Signal number HOC-A HOC-B HOC-C ...
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6 F 2 S 0 7 8 9 6.5.1.5 Restricted earth fault element REF The restricted earth fault element is checked on the following items. Operating current value Percentage restraining characteristic Note: Set all the CT ratio matching settings (1kct1 - 1kct3 to 3kct1 - 3kct3) to "1", because the operating value depends on the settings.
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6 F 2 S 0 7 8 9 Theoretical operating value = (CT secondary rated current) × (1ik setting) Percentage restraining characteristics The percentage restraining characteristic is tested on the outflow current (l ) and infeed current ) plane as shown in Figure 6.5.8. The characteristic shown in Figure 6.5.8 is equivalent to the one on the differential current (ld) and restraining current (lr) plane shown in Figure 2.11.2.
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6 F 2 S 0 7 8 9 ENTER key. Apply an infeed current to terminal TB1-1 and -2. When the infeed current applied is larger than the setting of ik (pu) and smaller than [kpp2 + (1p1)ik]/(p2 p1) (pu), characteristic DF1 is checked. When the infeed current applied is larger than [kpp2 + (1p1)ik]/(p2 ...
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6 F 2 S 0 7 8 9 6.5.1.6 Definite time overcurrent elements OC, EF The testing circuit is shown in Figure 6.5.10. GRT100 TB 1 Single-phase current source Monitoring jack TB 4 - A16 power - A17 supply Figure 6.5.10 Testing OC and EF (Model 100s, 200s) Element...
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6 F 2 S 0 7 8 9 6.5.1.7 Inverse time overcurrent elements OCI, EFI The testing circuit is shown in Figure 6.5.11. GRT100 TB 1 Single-phase current source Monitoring jack TB 4 - A16 power - A17 supply Start Time...
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6 F 2 S 0 7 8 9 6.5.1.8 Thermal overload element THR The testing circuit is shown in Figure 6.5.12. GRT100 TB 1 -1 Single-phase current source Monitoring jack TB 4 - A16 power - A17 supply Start Time...
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6 F 2 S 0 7 8 9 6.5.1.9 Frequency element FRQ The frequency element is checked on the following items Operating frequency Undervoltage block Operating frequency test The testing circuit is shown in Figure 6.5.13. GRT100 TB 1 -27 Variable frequency...
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6 F 2 S 0 7 8 9 6.5.1.10 Overexcitation element V/F The overexcitation element is checked on the following items Operating value of definite time tripping and alarm characteristic Operating time of inverse time tripping characteristic The output signal numbers of the V/F elements are as follows: Element Signal number Remarks...
6 F 2 S 0 7 8 9 Operating time characteristic test The testing circuit is shown in Figure 6.5.15. GRT100 TB 1 -27 Single-phase voltage source TB 4 - A16 Monitoring jack power supply - A17 Start Time counter Stop...
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6 F 2 S 0 7 8 9 Press 3 (= Timer) on the "Test" sub-menu screen to display the "Timer" screen. Enter the number corresponding to the timer to be observed. The timers and assigned numbers are listed in Appendix C. ...
6 F 2 S 0 7 8 9 6.5.3 Protection Scheme In the protection scheme tests, a dynamic test set is required to simulate power system pre-fault, fault and post-fault conditions. Tripping is observed with the tripping command output relays TRIP-1 to -5. Check that the indications and recordings are correct.
6 F 2 S 0 7 8 9 6.6 Conjunctive Tests 6.6.1 On Load Test With the relay connected to the line which is carrying a load current, it is possible to check the polarity of the voltage transformer and current transformer and the phase rotation with the metering displays on the LCD screen.
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6 F 2 S 0 7 8 9 ( 0 = D i s a b l e 1 = E n a b l e ) I O 1 T P - 1 : T B 4 - A 1 , I O 1 T P - : T B 4 - A 2 ,...
6 F 2 S 0 7 8 9 6.7 Maintenance 6.7.1 Regular Testing The relay is almost completely self-supervised. The circuits which cannot be supervised are binary input and output circuits and human interfaces. Therefore regular testing can be minimized to checking the unsupervised circuits. The test procedures are the same as described in Sections 6.4.1, 6.4.2 and 6.4.3.
6 F 2 S 0 7 8 9 If no message is shown on the LCD, this means that the failure location is either in the DC power supply circuit or in the microprocessors mounted on the SPM module. Then check the "ALARM"...
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6 F 2 S 0 7 8 9 The software name is indicated on the memory device on the module with letters such as GS1TM1-, GS1TM2-, etc. CAUTION When handling a module, take anti-static measures such as wearing an earthed wrist band and placing modules on an earthed conductive mat.
6 F 2 S 0 7 8 9 Replacing other modules Open the right-side front panel (HMI module) by unscrewing the two binding screws located on the left side of the panel. Open the left-side front panel (blind panel) (*) by unscrewing the two binding screws located on the right side of the panel.
6 F 2 S 0 7 8 9 7. Putting Relay into Service The following procedure must be adhered to when putting the relay into service after finishing commissioning or maintenance tests. Check that all external connections are correct. ...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents MECHANICAL TRIP1 BI (MECHANICAL TRIP 1) MECHANICAL TRIP2 BI (MECHANICAL TRIP 2) MECHANICAL TRIP3 BI (MECHANICAL TRIP 3) MECHANICAL TRIP4 BI (MECHANICAL TRIP 4) IND. RESET BI (Iidication reset) 14 EVENT1 BI (External event signal) 15 EVENT2...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 71 1REF Restricted earth fault relay 72 1EF Earth fault relay 73 1EFI Inverse time earth fault relay 74 2REF Restricted earth fault relay 75 2EF Earth fault relay 76 2EFI Inverse time earth fault relay 77 3REF...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 141 2OC-1 2OC relay trip 1 142 2OC-2 2OC relay trip 2 143 2OC-3 2OC relay trip 3 144 2OC-4 2OC relay trip 4 145 2OC-5 2OC relay trip 5 146 2OCI-1 2OCI relay trip 1 147 2OCI-2...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 211 3REF-3 3REF relay trip 3 212 3REF-4 3REF relay trip 4 213 3REF-5 3REF relay trip 5 214 3EF-1 3EF relay trip 1 215 3EF-2 3EF relay trip 2 216 3EF-3 3EF relay trip 3 217 3EF-4...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 281 WINDING4 RELAY OR-1 ditto 282 MECHANICAL TRIP OR-1 ditto 283 ELEMENT OR-1 ditto 284 TRIP-1 Trip O/P-1 285 WINDING1 RELAY OR-2 Element for trip 2 286 WINDING2 RELAY OR-2 ditto 287 WINDING3 RELAY OR-2 ditto...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 1241 IEC_MDBLK monitor direction blocked 1242 IEC_TESTMODE IEC60870-5-103 testmode 1243 GROUP1_ACTIVE group1 active 1244 GROUP2_ACTIVE group2 active 1245 GROUP3_ACTIVE group3 active 1246 GROUP4_ACTIVE group4 active 1247 GROUP5_ACTIVE group5 active 1248 GROUP6_ACTIVE group6 active...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 1401 LOCAL_OP_ACT local operation active 1402 REMOTE_OP_ACT remote operation active 1403 NORM_LED_ON IN-SERVICE LED ON 1404 ALM_LED_ON ALARM LED ON 1405 TRIP_LED_ON TRIP LED ON 1406 TEST_LED_ON TEST LED ON 1407 1408...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 1471 1472 SUM_err Program ROM checksum error 1473 1474 SRAM_err SRAM memory monitoring error 1475 BU-RAM_err BU-RAM memory monitoring error 1476 DP-RAM_err DP-RAM memory monitoring error 1477 EEPROM_err EEPROM memory monitoring error 1478 SUB-CPU_err Sub-CPU stopped...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 1536 1537 1538 1539 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 PROT_COM_RECV protection inactivate command received 2687 2688 TPLED_RST_RCV...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 2811 2812 2813 2814 2815 2816 TEMP001 2817 TEMP002 2818 TEMP003 2819 TEMP004 2820 TEMP005 2821 TEMP006 2822 TEMP007 2823 TEMP008 2824 TEMP009 2825 TEMP010 2826 TEMP011 2827 TEMP012 2828 TEMP013 2829 TEMP014...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 2881 TEMP066 2882 TEMP067 2883 TEMP068 2884 TEMP069 2885 TEMP070 2886 TEMP071 2887 TEMP072 2888 TEMP073 2889 TEMP074 2890 TEMP075 2891 TEMP076 2892 TEMP077 2893 TEMP078 2894 TEMP079 2895 TEMP080 2896 TEMP081 2897 TEMP082...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 2951 TEMP136 2952 TEMP137 2953 TEMP138 2954 TEMP139 2955 TEMP140 2956 TEMP141 2957 TEMP142 2958 TEMP143 2959 TEMP144 2960 TEMP145 2961 TEMP146 2962 TEMP147 2963 TEMP148 2964 TEMP149 2965 TEMP150 2966 TEMP151 2967 TEMP152...
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6 F 2 S 0 7 8 9 Signal list Signal Name Contents 3021 TEMP206 3022 TEMP207 3023 TEMP208 3024 TEMP209 3025 TEMP210 3026 TEMP211 3027 TEMP212 3028 TEMP213 3029 TEMP214 3030 TEMP215 3031 TEMP216 3032 TEMP217 3033 TEMP218 3034 TEMP219 3035 TEMP220 3036 TEMP221 3037 TEMP222...
6 F 2 S 0 7 8 9 Appendix D Binary Output Default Setting List 161 ...
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6 F 2 S 0 7 8 9 Binary Output Default Setting List Relay Module BO No. Terminal Signal Name Contents Setting Model Name Signal No. Logic Timer (OR: 1, AND: 2) (OFF: 0, ON: 1) GRT100 TB3: -101 A2-A1 TRIP-1 TRIP First A2-B1...
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6 F 2 S 0 7 8 9 Relay Module BO No. Terminal Signal Name Contents Setting Model Name Signal No. Logic Timer (OR: 1, AND: 2) (OFF: 0, ON: 1) GRT100 TB3: -201 A2-A1 TRIP-1 TRIP First A2-B1 TRIP-2 TRIP Second A2-B2 TRIP-3...
6 F 2 S 0 7 8 9 Appendix E Details of Relay Menu and LCD and Button Operation 165 ...
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6 F 2 S 0 7 8 9 MENU 1=Record 2=Status 3=Setting(view) 4=Setting(change) 5=Test /1 Record 1=Fault record 2=Event record 3=Disturbance record /2 Fault record /3 Fault record /4 Fault record #2 3/33 1=Display 2=Clear #1 16/Oct/1998 23:18:03.913 16/Oct/1998 23:18:03.913 #2 12/Feb/1998 03:51:37.622 Phase BC Trip...
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6 F 2 S 0 7 8 9 /1 Setting(view) 1=Version 2=Description 3=Comm. 4=Record 5=Status 6=Protection 7=Binary input 8=Binary output 9=LED /2 Relay version Relay type: ******************** Serial No.: ******************** Main software: ******************** /2 Description Plant name: ******************** Description: ******************** /2 Communication /3 Address 1/ 1...
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6 F 2 S 0 7 8 9 LCD AND BUTTON OPERATION INSTRUCTION MANUAL MODE 1. PRESS ARROW KEY TO MOVE TO EACH DISPLAYED ITEMS NORMAL 2. PRESS "END" KEY TO BACK TO PREVIOUS SCREEN (DISPLAY OFF) 1=RECORD PRESS ANY BUTTON MENU 1=FAULT RECORD...
6 F 2 S 0 7 8 9 Appendix F Case Outline Flush Mount Type Rack Mount Type 173 ...
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6 F 2 S 0 7 8 9 30.8 276.2 Front View Side view 4-5.5 190.5 34.75 235.4 Rear view Panel cut-out TB3/TB4 TB2 A1 B1 A1 B1 TB2-TB4: M3.5 Ring terminal TB1: M3.5 Ring terminal A10 B10 A18 B18 Terminal block Case Outline : Flush Mount Type ...
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6 F 2 S 0 7 8 9 Attachment kit (top bar) Attachment kit Attachment kit (large bracket) (small bracket) Top View 4 HOLES - 6.8x10.3 TRANSFORMER PROTECTION GRT100 201B-11-10 100/110/115/120V 465.1 483.0 Front View Case Outline: Rack Mount Type ...
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6 F 2 S 0 7 8 9 247.8 19.4 18.8 (a) Large Bracket (b) Small Bracket (c) Bar for Top and Bottom of Relay Parts 1 Large bracket, 5 Round head screws with spring washers and washers (M4x10) 1 Small bracket, 3 Countersunk head screws (M4x6) 2 Bars, 4 Countersunk head screws (M3x8) Dimensions of Attachment Kit EP-101 ...
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6 F 2 S 0 7 8 9 How to Mount Attachment Kit for Rack-Mounting Caution: Be careful that the relay modules or terminal blocks, etc., are not damage while mounting. Tighten screws to the specified torque according to the size of screw. Step 1.
6 F 2 S 0 7 8 9 Appendix H Relay Setting Sheet 1. Relay Identification 2. Contacts Setting 3. Relay and Protection Scheme Setting Sheet 185 ...
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6 F 2 S 0 7 8 9 Relay Setting Sheets 1. Relay Identification Date: Relay type Serial Number Frequency CT rating VT rating dc supply voltage Password Active setting group 2. Contacts Setting (1) IO#2 BO1 BO10 BO11 BO12 BO13 (2) IO#3 BO1 BO10...
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6 F 2 S 0 7 8 9 3. Relay and Protection Scheme Setting Sheet Modbus address Standard (Except Y-TYPE) Default Setting of Relay Series № (50Hz / 60Hz) Active Group User Setting Name Range Units Contents 2-Winding 3-Winding comm 50Hz 60Hz 101B...
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6 F 2 S 0 7 8 9 Modbus address Default Setting of Relay Series Standard (Except Y-TYPE) № (50Hz / 60Hz) Active Group Name Range Units Contents 2-Winding 3-Winding User Setting comm 50Hz 60Hz 101B 102B 201B 202B - 3REF3 Off - On 16,189 16,189 16,189 16,189 16,189 16,189 16,189...
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6 F 2 S 0 7 8 9 Modbus address Default Setting of Relay Series Standard (Except Y-TYPE) № (50Hz / 60Hz) Active Group Name Range Units Contents 2-Winding 3-Winding User Setting comm 50Hz 60Hz 101B 102B 201B 202B - 1kct3 1.00 - 50.00 1.00...
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6 F 2 S 0 7 8 9 Modbus address Default Setting of Relay Series Standard (Except Y-TYPE) № (50Hz / 60Hz) Active Group Name Range Units Contents 2-Winding 3-Winding User Setting comm 50Hz 60Hz 101B 102B 201B 202B - BISW7 Norm - Inv Norm...
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6 F 2 S 0 7 8 9 Modbus address Default Setting of Relay Series Standard (Except Y-TYPE) № (50Hz / 60Hz) Active Group User Setting Name Range Units Contents 2-Winding 3-Winding comm 50Hz 60Hz 101B 102B 201B 202B - 21,788 TRIP3 Off - On...
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6 F 2 S 0 7 8 9 PLC default setting Output Timing Logic expression Delay Time / Flip Flop Cycle Flip Flop Timer № Signal Turn Model 100s Model 200s Back Release None User Norm Time Value Signal Delay Delay Shot 1536 EXT_MEC.TP1...
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6 F 2 S 0 7 8 9 Output Timing Logic expression Delay Time / Flip Flop Cycle Flip Flop Timer № Signal Turn Model 100s Model 200s Back Release None User Norm Time Value Signal Delay Delay Shot 1600 TP1_DELAY [315]TP1 1601 TP2_DELAY [316]TP2...
6 F 2 S 0 7 8 9 Appendix I Commissioning Test Sheet (sample) 1. Relay identification 2. Preliminary check 3. Hardware test 3.1 User interface check 3.2 Binary input/Binary output circuit check 3.3 AC input circuit check 4. Function test 4.1 Percentage current differential element DIF test 4.2 2F-lock element check 4.3 5F-lock element check...
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6 F 2 S 0 7 8 9 Relay identification Type Serial number Model System frequency Station Date Circuit Engineer Protection scheme Witness Active settings group number Preliminary check Ratings CT shorting contacts DC power supply Power up Wiring Relay inoperative alarm contact Calendar and clock Hardware check...
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6 F 2 S 0 7 8 9 Function test 4.1 Percentage current differential element DIF test (1) Minimum operating value test Tap setting Measured current (2) Percentage restraining characteristic test Measured current (I 2 ) Tap setting I k ...
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6 F 2 S 0 7 8 9 4.6 Overcurrent element test (1) OC element Element Tap setting Measured current (2) EF element Element Tap setting Measured current (3) OCI element Element Test current Measured operating time 2 I s 20 ...
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6 F 2 S 0 7 8 9 (2) Undervoltage block Setting Measured voltage 4.9 Overexcitation element V/F test (1) Operating value test Element Setting Measured voltage (2) Operating time test Test voltage Measured operating time Protection scheme test Scheme Results Metering and recording check Conjunctive test...
6 F 2 S 0 7 8 9 Appendix J Return Repair Form 200 ...
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6 F 2 S 0 7 8 9 RETURN / REPAIR FORM Please fill in this form and return it to Toshiba Corporation with the GRT100 to be repaired. TOSHIBA CORPORATION Fuchu Complex 1, Toshiba-cho, Fuchu-shi, Tokyo, Japan For: Power Systems Protection & Control Department...
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6 F 2 S 0 7 8 9 Fault Record Date/Month/Year Time (Example: 04/ Nov./ 1997 15:09:58.442) Faulty phase: Prefault values (CT ratio: kA/: A, VT ratio: kV/: I a1 : kA or A I a2 : kA or A ...
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6 F 2 S 0 7 8 9 What was the message on the LCD display at the time of the incident. Please write the detail of the incident. Date of the incident occurred. Day/ Month/ Year: (Example: 10/ July/ 1998) Please write any comments on the GRT100, including the document.
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6 F 2 S 0 7 8 9 Customer Name: Company Name: Address: Telephone No.: Facsimile No.: Signature: 204 ...
6 F 2 S 0 7 8 9 Appendix K Technical Data 206 ...
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6 F 2 S 0 7 8 9 TECHNICAL DATA Ratings AC current 1A or 5A AC voltage 100V, 110V, 115V, 120V Frequency 50Hz or 60Hz DC power supply 110Vdc/125Vdc (Operative range: 88 to 150Vdc) 220Vdc/250Vdc (Operative range: 176 to 300Vdc) 48Vdc/54Vdc/60Vdc (Operative range: 38.4 to 72Vdc) 24Vdc/30Vdc (Operative range: 19.2 to 36Vdc) maximum 12%...
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6 F 2 S 0 7 8 9 Time-overcurrent protection High-set overcurrent element Pick up level (OC, EF) 0.10 to 20.00pu in 0.10pu steps Delay time (TOC, TEF) 0.00 to 10.00s in 0.01s steps Operating time typical 30ms (without delay time) Inverse time overcurrent element Pick up level (OCI, EFI) 0.10 to 5.00pu in 0.01pu steps...
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6 F 2 S 0 7 8 9 Disturbance record initiation Overcurrent element 0.10 to 20.00pu in 0.01pu steps Earth fault 0.05 to 20.00pu in 0.01pu steps Pre-fault time 0.3s (fixed) Post-fault time 0.1 to 3.0s in 0.1s steps Communication port Front communication port (local PC) Connection Point to point...
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6 F 2 S 0 7 8 9 CT requirement The CT knee point voltage Vk is required as follows: The CT should not be saturated by maximum through fault current. Vk (RCT + R1 + Vb/n ) Ifm/N Ifm: Maximum through fault current CT ratio...
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6 F 2 S 0 7 8 9 ENVIRONMENTAL PERFORMANCE CLAIMS Test Standards Details Atmospheric Environment Temperature IEC60068-2-1/2 Operating range: -10C to +55C. Storage / Transit: -25C to +70C. Humidity IEC60068-2-78 56 days at 40C and 93% relative humidity. Enclosure Protection IEC60529 IP51 (Rear: IP20) Mechanical Environment...
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6 F 2 S 0 7 8 9 Appendix L Setting Notes 1. Scheme switch setting of REF element 2. Notes for applying the GRT100-201 model to two-winding transformer 212 ...
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6 F 2 S 0 7 8 9 1. Scheme switch setting of REF element Type of transformer Scheme switch setting [1REF] = 1I0 2ct-1 1ct-1 [2REF] = 1I0 1nCT 2nCT 1REF 2REF [1REF] = 2I0 1ct-1 2REF1 = OFF 2REF2 = OFF 2REF3 = OFF 2REF4 = OFF...
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6 F 2 S 0 7 8 9 Type of transformer Scheme switch setting 2REF = 1I0 2ct-1 1REF1 to 5 = OFF 3REF1 to 5 = OFF 2nCT 2REF 1REF = 1I0 1ct-1 2ct-1 2REF = 1I0 3REF = 1I0 1nCT 2nCT 1REF...
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6 F 2 S 0 7 8 9 Type of transformer Scheme switch setting 1REF = 1I0 1ct-1 3REF = 1I0 1nCT 2REF1 to 5 = OFF 1REF 3nCT 3REF 3ct-1 2REF = 1I0 2ct-1 3REF = 1I0 1REF1 to 5 = OFF 2nCT 2REF 3nCT...
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6 F 2 S 0 7 8 9 Type of transformer Scheme switch setting 3REF = 1I0 1REF1 to 5 = OFF 3REF1 to 5 = OFF 3nCT 3REF 3ct-1 1REF = 2I0 3REF = 1I0 2REF1 to 5 = OFF 3REF 1REF 1REF = 2I0...
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6 F 2 S 0 7 8 9 Type of transformer Scheme switch setting 2REF = 2I0 2ct-1 1REF1 to 5 = OFF 3REF1 to 5 = OFF 2nCT 2REF 2ct-2 1REF = 3I0 1ct-1 1ct-2 2REF1 to 5 = OFF 3REF1 to 5 = OFF 1nCT 1REF...
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6 F 2 S 0 7 8 9 2. Notes for applying the GRT100-201 model to two-winding transformer If the GRT100-201 is applied to two-winding transformer, make notes the following settings: 1. CT circuit connection No connection for Terminals 17 to 24 2.
6 F 2 S 0 7 8 9 Appendix M Symbols Used in Scheme Logic 220 ...
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6 F 2 S 0 7 8 9 Symbols used in the scheme logic and their meanings are as follows: Signal names Marked with : Measuring element output signal Marked with : Binary signal input from or output to the external equipment Marked with [ ] : Scheme switch Marked with "...
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6 F 2 S 0 7 8 9 Signal inversion Output Output Timer Delaye pick-up timer with fixed setting XXX: Set time Delayed drop-off timer with fixed setting XXX: Set time Delaye pick-up timer with variable setting XXX - YYY: Setting range XXX - YYY Delayed drop-off timer with variable setting XXX - YYY: Setting range...
6 F 2 S 0 7 8 9 Appendix N Implementation of Thermal Model to IEC60255-8 ...
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6 F 2 S 0 7 8 9 Implementation of Thermal Model to IEC60255-8 Heating by overload current and cooling by dissipation of an electrical system follow exponential time constants. The thermal characteristics of the electrical system can be shown by equation (1). ...
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6 F 2 S 0 7 8 9 where: = prior load current. In fact, the cold curve is simply a special case of the hot curve where prior load current I = 0, catering for the situation where a cold system is switched on to an immediate overload. Figure N-2 shows a typical thermal profile for a system which initially carries normal load current, and is then subjected to an overload condition until a trip results, before finally cooling to ambient temperature.
6 F 2 S 0 7 8 9 Appendix O IEC60870-5-103: Interoperability and Troubleshooting ...
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6 F 2 S 0 7 8 9 IEC60870-5-103 Configurator IEC103 configurator software is included in a same CD as RSM100, and can be installed easily as follows: Installation of IEC103 Configurator Insert the CD-ROM (RSM100) into a CDROM drive to install this software on a PC. Double click the “Setup.exe”...
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6 F 2 S 0 7 8 9 Transmission cycle of Measurand frame FUN of System function Test mode, etc. CAUTION: To be effective the setting data written via the RS232C, turn off the DC supply of the relay and turn on again.
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6 F 2 S 0 7 8 9 List of Information IEC103 Configurator Default setting Description Contents GI Type Signal No. OFF ON Standard Information numbers in monitor direction System Function End of General Interrogation Transmission completion of GI items. Time Synchronization Time Synchronization ACK.
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6 F 2 S 0 7 8 9 IEC103 Configurator Default setting Description Contents Type Signal NO. OFF ON Fault Indications Start/pick-up L1 A phase, A-B phase or C-A phase element pick-up Start/pick-up L2 B phase, A-B phase or B-C phase element pick-up Start/pick-up L3 C phase, B-C phase or C-A phase element pick-up Start/pick-up N...
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6 F 2 S 0 7 8 9 IEC103 configurator Default setting Description Contents Type Max. No. Measurands 144 Measurand I 145 Measurand I,V Ib1, Vab measurand 2, 7 146 Measurand I,V,P,Q 147 Measurand IN,VEN ...
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6 F 2 S 0 7 8 9 IEC103 Configurator Default setting Description Contents Type Selection of standard information numbers in control direction System functions Initiation of general interrogation Time synchronization General commands Auto-recloser on/off Not supported Teleprotection on/off Not supported Protection on/off (*1) ON/OFF...
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6 F 2 S 0 7 8 9 GRT100 supported Description Contents Comment Basic application functions Test mode Blocking of monitor direction Disturbance data Generic services Private data Miscellaneous Max. MVAL = rated Measurand value times Current L1 Configurable Current L2 Configurable Current L3 Configurable...
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6 F 2 S 0 7 8 9 [Legend] GI: General Interrogation (refer to IEC60870-5-103 section 7.4.3) Type ID: Type Identification (refer to IEC60870-5-103 section 7.2.1) 1 : time-tagged message 2 : time-tagged message with relative time 3 : measurands I 4 : time-tagged measurands with relative time 5 : identification 6 : time synchronization...
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6 F 2 S 0 7 8 9 IEC103 setting data is recommended to be saved as follows: (1) Naming for IEC103setting data The file extension of IEC103 setting data is “.csv”. The version name is recommended to be provided with a revision number in order to be changed in future as follows: _01.csv First draft: _02.csv...
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6 F 2 S 0 7 8 9 Troubleshooting Phenomena Supposed causes Check / Confirmation Object Procedure Communication Address setting is incorrect. Match address setting between BCU and relay. trouble (IEC103 Avoid duplication of address with other relay. communication is Transmission baud rate setting is Match transmission baud rate setting between not available.)
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6 F 2 S 0 7 8 9 Phenomena Supposed causes Check / Confirmation Object Procedure HMI does not The relevant event sending condition is Change the event sending condition (signal display IEC103 not valid. number) of IEC103 configurator if there is a setting event on the SAS error.
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6 F 2 S 0 7 8 9 Appendix P Modbus: Interoperability ...
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6 F 2 S 0 7 8 9 Modbus: Interoperability 1. Physical and Data Link Layer - RS485(EIA/TIA-485) 2-wire interface - RTU mode only - Coding System: 8–bit binary (1 start bit, 8 data bits, 1 parity bit, 1 stop bit) Even parity - Address setting range: 1-247 - Baud rate setting range: 9600 or 19200...
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GRT100-101B-40-10 (for example) ASCII Run Indicator Status (1byte) 0x00=out of service, 0xFF=in service 43 Read Device Identification (SC:14) Response Data Param Basic device identification TOSHIBA Vendor Name GRT100-101 (for example) Product Code Major Minor Revision Regular device identification Vendor URL...
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6 F 2 S 0 7 8 9 (2) Modbus address map Address Function Contents Unit Control 1,2,5 Control start 1027 1,2,5 Time trigger 1028 1,2,5 Reset Trip LED Signal List 4608 1200 signal list#0 4609 1201 signal list#1 4610 1202 signal list#2 ・・・...
6 F 2 S 0 7 8 9 Appendix R Failed Module Tracing and Replacement ...
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6 F 2 S 0 7 8 9 1. Failed module tracing and its replacement If the “ALARM” LED is ON, the following procedure is recommended. If not repaired, contact the vendor. Procedure Countermeasure “ALARM” LED ON? No failure Not displayed Press [VIEW] key Any LCD messages? Contact the vendor.
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6 F 2 S 0 7 8 9 2. Methods of Replacing the Modules CAUTION When handling a module, take anti-static measures such as wearing an earthed wrist band and placing modules on an earthed conductive mat. Otherwise, many of the electronic components could suffer damage. CAUTION After replacing the SPM module, check all of the settings including the data related the PLC and IEC103, etc.
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6 F 2 S 0 7 8 9 5). Unplug the cables. Unplug the ribbon cable running among the modules by nipping the catch (in case of black connector) and by pushing the catch outside (in case of gray connector) on the connector. Gray connector Black connector 6).
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6 F 2 S 0 7 8 9 9). Lamp Test RESET key is pushed 1 second or more by LCD display off. It checks that all LCDs and LEDs light on. 10). Check the automatic supervision functions. ...
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6 F 2 S 0 7 8 9 Version-up Records Version Date Revised Section Contents First issue Feb. 4, 2004 Apr. 21, 2004 2.3.1 Modified the description and the Figure 2.3.2. 2.3.2.2 Modified the description. 2.3.4 Modified the setting table. 4.2.5.1, 4.2.6.7 Modified samples of LCD screens.
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6 F 2 S 0 7 8 9 Republished under spin-off company Oct. 2, 2017 ...