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Emerson 7400M Series User Manual

Single module parallel 1+n
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Series 7400M UPS

USER MANUAL

Single Module
Parallel 1+N
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7400M
7400M
UNINTERRUPTIBLE POWER SYSTEM
UNINTERRUPTIBLE POWER SYSTEM
Part No. : 500203072038
Revision : 01
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  • Page 1: User Manual

    Series 7400M UPS USER MANUAL Single Module Parallel 1+N 7400M 7400M UNINTERRUPTIBLE POWER SYSTEM UNINTERRUPTIBLE POWER SYSTEM Part No. : 500203072038 Revision : 01...
  • Page 2 It is our constant endeavour to partner you for the growth and success of your business. This philosophy is reflected in our Mission statement “To deliver value through Air & Power Quality solutions to achieve customer delight”. Please do give us feedback to help us realise our Mission. Emerson Network Power (India) Pvt. Ltd. 02/02...
  • Page 3 Phone : 91-22- 25807000 25802388 : 91-22- 25800829 25828358 Emerson Network Power pursues a policy of continual product development and reserves the right to change the equipment without notice. @ Copyright 2002 by Emerson Network Power Unauthorized reproduction prohibited All rights reserved...
  • Page 4 REGISTERED HEAD OFFICE Emerson Network Power (India) Private Limited PLOT NO. C-20, ROAD NO. 19 WAGLE INDUSTRIAL ESTATE THANE – 400 604 MAHARASHTRA, INDIA TELEPHONE: (00 91 22) 25807000/ 25828405 / 25802388 FAX: (00 91 22) 25800829 / 25828358 *** WEST ZONE ***...
  • Page 5 *** EAST ZONE *** Kolkatta Address: Jindal Towers, 21/1A/3, Darga Road, Kolkata - 700 017 Tel: 91-33-2289 0493 / 033 2289 0490 Fax: 91-33-2289 0492 Bhubaneshwar Address: 69, Satya Nagar, Bhubaneshwar 751 007 Tel: 91-674-2520 778 Fax: 91-674-2520 778 Jamshedpur Address: Kashi Kunji, Road No.
  • Page 6 Safety Procedure WARNING In a domestic environment, this product may cause radio interface in which case the user may be required to take additional measures. WARNING HIGH EARTH LEAKAGE CURRENT: EARTH CONNECTIONS IS ESSENTIAL BEFORE CONNECTING THE INPUT SUPPLY. This equipment must be earthed in accordance with local electrical codes. WARNING THIS UPS DOES NOT INCORPORATE AUTOMATIC BACKFEED PROTECTION.

  • Page 7: Table Of Contents

    Table of Contents Chapter 1- General Description 1.1 Introduction 1.2 Design Concept 1.2.1 7400-M Module Design 1.2.2 Bypass supplies 1.2.3 UPS Power Switch Configuration 1.2.4 Battery Circuit Breaker 1.2.5 Battery Cabinet/ Racks 1.2.6 Battery Circuit Breaker Box 1.2.7 Battery temperature compensation (optional) 1.3 Operator Control and Display Panel 1.3.1 LED Indications 1.3.2 LCD Display...
  • Page 8 Chapter 4- Optional Equipment 4.1 AS400 Alarm Interface Board 4.1.1 Remote control inputs 4.1.2 AS400 Interface 4.1.3 Alarm outputs 4.1.4 X2 Extension 4.2 Remote Alarms Interface Board 4.2.1 Alarm outputs 4.3 Additional 3 X A5400 Interface 4.4 Remote Alarm Monitor 4.4.1 Connections 4.5 Battery cabinet/ Racks...
  • Page 9 7.2 Operating Instructions 7.2.1 Generality 7.2.2 Switching the system to Power the load from a power off condition 7.2.3 Switching the system to Maintenance bypass from Normal operation 7.2.4 Switching the system ON from a Maintenance power down condition 7.2.5 Powering down the system 7.2.6 Reset of the system after a recognised transfer to bypass or EPO Action...

  • Page 10: Chapter 1- General Description

    Chapter 1 – General Description Introduction: The 7400-M series Uninterruptible Power Supply (UPS) system is connected between a critical load, such as a computer, and its three phase mains power supply. Being designed to furnish a well regulated 3 phase output power supply under all rated load and input supply conditions, the system offers the user the following advantages: Increased power quality: The UPS has its own internal voltage and frequency regulator which...

  • Page 11: Bypass Supplies

    7400M - Series UPS User Manual Single Module and 1+N Parallel System During normal operation both the rectifier and inverter sections are active and provides regulated load power whilst simultaneously float charging the battery. In the event of a mains power failure, the rectifier becomes inoperative and the inverter is powered solely from the battery.

  • Page 12: Ups Power Switch Configuration

    7400M - Series UPS User Manual Single Module and 1+N Parallel System A (INV: UNSYNCHRONISED) warning message is displayed on the operator control panel when the inverter and bypass supplies are not synchronised; a second manually controlled, ‘maintenance bypass’ supply is also incorporated into the UPS design. Its purpose is to enable the critical load to be powered from the mains (bypass) supply while the UPS is shut down for maintenance or troubleshooting.
  • Page 13 7400M - Series UPS User Manual Single Module and 1+N Parallel System Figure 1-3: UPS Power Switch Locations A = (Q1) Rectifier Input Power Switch B = (Q2) Static Bypass Input Power Switch C = (Q3) Maintenance Bypass Power Switch D = (Q4) UPS Output Power Switch 1 = Reset Push-button 02/02...

  • Page 14: Operator Control And Display Panel

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Operator Control and Display Panel The operator control and display panel can be divided into two functional sections: ‘LED Indications’ and ‘Control and Display. As can be seen the upper section consists of LEDs which indicate the operational and alarm status of the system by turning ON and OFF or by flashing ON / OFF.

  • Page 15: Led Indications

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 1.3.1 LED Indications The control and display panel LED indications are illustrated in figure 1-5 and described in the following text: Bypass AC Input supply present: This LED illuminates when the bypass AC input power switch is closed and the Input supply is within off set value nominal voltage (default ±...

  • Page 16: Lcd Display

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Switch - Emergency Power Off (EPO): The optional EPO switch is located remote to the UPS cabinet in a position agreed with the user. When the EPO switch is pressed it disables the static switch block entirely (so removing load power).
  • Page 17 7400M - Series UPS User Manual Single Module and 1+N Parallel System The Menu options A map of the routes to the options offered by the menu is provided in figure 1-7. Options include windows which show status information and windows which permit data to be entered, or parameters for equipment control to be set.
  • Page 18 7400M - Series UPS User Manual Single Module and 1+N Parallel System NORMAL OPERATION NORMAL OPERATION RECTIF. SWITCH OPEN RECTIF. SWITCH OPEN MODEM TYPE : MODEM TYPE : SW VERSION SW VERSION or. for OUTPUT OUTPUT SWITCH OPEN SWITCH OPEN M-TECH.1932-ZDX M-TECH.1932-ZDX INV.: UNSYNCHRO NIZED...
  • Page 19 7400M - Series UPS User Manual Single Module and 1+N Parallel System The FUNCTION, MAINTENANCE and SETUP options all require a password which is set by the commissioning engineer. This manual does not provide servicing instructions and the options accessed from these windows are therefore not shown on the menu map in figure 1- 7.

  • Page 20: Chapter 2- Operating Instructions

    Chapter 2 – Operating Instructions Introduction The UPS can be considered to be in one of three operating conditions: Normal operation - All relevant power switches and circuit breakers § closed, the load is powered by the UPS. On Maintenance Bypass - UPS shut down but the load connected §...
  • Page 21 7400M - Series UPS User Manual Single Module and 1+N Parallel System Figure 2-1: LED Indications Figure 2-2: Power Switch Identification A = (Q1) Rectifier Input Power Switch B = (Q2) Static Bypass Input Power Switch C = (Q3) Maintenance Bypass Power Switch D = (Q4) UPS Output Power Switch 1 = Reset Push-button 2 = UPS Logic Boards...

  • Page 22: Procedure For Switching The Ups To Power The Load From A Power Off Condition

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Procedure for switching the UPS to power the load from power off condition This procedure should be followed when turning on the UPS from a fully powered down condition - i.e. where the load is not being initially supplied at all.

  • Page 23: Procedure For Switching The Ups Into A Maintenance Bypass Condition From Normal Operation

    If the voltage indicated is satisfactory (432V DC for 380V AC system BATTERY 446V DC for 400V DC system and 459V DC for 415 V AC system) VOLTAGE 432 [V] press the ESC key repeatedly until the display returns to the original CURRENT 001 [A] window.
  • Page 24 7400M - Series UPS User Manual Single Module and 1+N Parallel System You now have access to all function windows. Press the DOWN arrow key until the cursors have selected NEXT PAGE - press the MODEM CONNECTION ENTER key. >ON/OFF UPS CONTROL < RELOAD UPS DATA RESET BUFFERS Press the DOWN arrow key until the cursors have selected.
  • Page 25 7400M - Series UPS User Manual Single Module and 1+N Parallel System 2.4 Procedure for Switching the UPS ON from a Maintenance Power down condition This procedure will describe how to start the UPS and then how to transfer the load from the maintenance bypass to the UPS Inverter. 1.

  • Page 26: Procedure For Completely Powering Down The Ups

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 8. Press the DOWN arrow key until the cursors have selected ON/ OFF UPS BLOCK. Press the ENTER key. MODEM CONNECTION >ON/OFF UPS CONTROL < RELOAD UPS DATA CAUTION RESET BUFFERS The following window allows the operator to select the UPS...
  • Page 27 7400M - Series UPS User Manual Single Module and 1+N Parallel System 1. Open the Battery circuit breaker and the Rectifier input power switch Q1. The Module Mimic indicator (2) Load on Inverter will extinguish and the Load on Bypass Indicator (3) will flash amber. The battery not available indicator (4) will light amber and the battery bar graph LED's will all extinguish.

  • Page 28: Procedure For Carrying Out A Reset After A Recognised Controlled Transfer To Bypass Or Epo Action

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Procedure for carrying out a RESET after a recognised controlled transfer to bypass or EPO action. When the necessary action to correct the problem has been taken, this procedure should be followed to restore the UPS back to its normal operating condition following, a controlled transfer to bypass or when the Remote Emergency Power Off switch has been activated.

  • Page 29: Chapter 3 - Installation Procedure

    Chapter 3 - Installation Procedure Introduction WARNING Do not apply electrical power to the UPS equipment before the arrival of the commissioning engineer. WARNING The UPS equipment should be installed by a qualified engineer in accordance with the information contained in this chapter and the drawing package shipped inside the UPS cabinet.

  • Page 30: Raised Floor Installation

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 3. 3.1.1 Equipment Positioning The UPS cabinets are fitted with castors on the base to allow ease of and Environmental movement and positioning, When the equipment has been finally positioned ensure the adjustable feet are sat so that the UPS will considerations remain stationary and stable (see figure 3-2)

  • Page 31: Battery Location

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 3.1.3 Battery Location Temperature is a major factor in determining the battery life and capacity. Battery manufacturers quote figures for an operating temperature of 20°C. Operating above this temperature will reduce the battery life, operation below this temperature will reduce the battery capacity.
  • Page 32 7400M - Series UPS User Manual Single Module and 1+N Parallel System 7400M 7400 M U N I T ERRUPTIBLE POWER SUPP L Y SYSTEM Front Slot for all Control cables Slot for Power 200 x 40 Cables 125 x 85 Weights: 30kVA –...

  • Page 33: Preliminary Checks

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Preliminary Checks Before you install the UPS hardware you should carry out the following preliminary checks: 1. Verify that the UPS room satisfies the environmental conditions stipulated in the equipment specification, paying particular attention to the ambient temperature and air exchange system.

  • Page 34: Connecting The Ups Power Cables

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Connecting The UPS Power Cables WARNING Before cabling-up the ups, ensure that you are aware of the location and operation of the external isolators that connect the UPS Input/ Bypass supply to the mains distribution panel.

  • Page 35: Cable Connections

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Sheathed cables clipped direct to or lying on a non – metallic surface Figure 3-3: Cable fixing samples from method 1 3.3.3 Cable Connections The input mains/bypass cables, UPS output cables and battery cables Connections (all require lug type terminations) are connected to busbar situated between the power isolator switches - as shown in figure 3-5.

  • Page 36: Cabling Procedure

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 3.3.6 Cabling Procedure Once the equipment has been finally positioned and secured, connect the power cables as described in the following procedure. Study the connection diagrams in figures 3-5. 1.
  • Page 37 7400M - Series UPS User Manual Single Module and 1+N Parallel System 7400M 7400M E sc E sc 7400 M 7400 M U N I T E R RUPTIBLE POWER SUPP L Y S Y S T E M U N I T E R RUPTIBLE POWER SUPP L Y S Y S T E M B A T T E R Y B A N K B A T T E R Y B A N K A –...
  • Page 38 7400M - Series UPS User Manual Single Module and 1+N Parallel System AS400/ Alarms AS400/ Alarms connections connections Cable (G) Cable (G) Communication Communication connections connections Cable (F) Cable (F) Battery Power Battery Power Connections Connections X3 – Cables and X3 –...
  • Page 39 7400M - Series UPS User Manual Single Module and 1+N Parallel System Connect the battery power cables between the UPS battery terminals and its associated battery circuit breaker - see figures 3 - 5 and 3 -7. a safety precaution, remove the battery fuse in the module until the arrival of the commissioning engineer.

  • Page 40: Battery Installation

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Battery Installation WARNING Only qualified personnel should install or service batteries. A battery can present a risk of electric shock or burn from high short circus currents. Eye protection should be worn to prevent injury from accidental electrical arcs.
  • Page 41 UPS using the most direct route possible Emerson Network Power offer a purpose-designed remote battery circuit breaker box, containing the circuit breaker and its necessary control board, as a standard option kit.
  • Page 42 7400M - Series UPS User Manual Single Module and 1+N Parallel System Sensor Temperature (Optional) BATTERY CIRCUIT 1 2 3 4 5 BREAKER UPS CABINET Battery C.B. Controller Sensor Temperature (Optional) BATTERY CIRCUIT 1 2 3 4 5 BREAKER UPS CABINET Battery C.B.

  • Page 43: Chapter 4- Optional Equipment

    Chapter 4 – Optional Equipment Several items of optional equipment are available for fitting to the 7400-M series UPS for use by the customer as required. These options are: • AS400 alarm Interface Board (# 100201120003) Additional 3xAS400 Interface Board (#100201120008) •...
  • Page 44 7400M - Series UPS User Manual Single Module and 1+N Parallel System ALARM INTERFACE BOARD RL –K6 Load on Bypass # 100 201 120 003 AS400BY (4590055P) RL –K7 Low Battery AS400BL RL –K8 Maintenance Bypass Open AS400ON RL –K9 Mains or Rectifier Failure AS400UE Common (0V)

  • Page 45: Alarm Outputs

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 4.1.3 Alarm Outputs In addition to the AS 400 alarm outputs the Interface Board also contains a number of relays whose contact provide a set of volt-free alarm outputs that are connected to terminal block X4-as shown in figure 4-1.

  • Page 46: Remote Alarms Interface Board

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Remote Alarms Interface Board ( # 100201120007) 4.2.1 Alarm Outputs The Remote Alarms Interface board is fitted in the right hand side of the unit as shown in figure 4-3 and is connected (piggy back style) directly via connector X1 onto the Interface Board connector X2.
  • Page 47 7400M - Series UPS User Manual Single Module and 1+N Parallel System REMOTE ALARM INTERFACE BOARD # 100 201 120 007 Not used Not used RL –K6 RL –K6 Transfer on Bypass inhibit Transfer on Bypass inhibit RL –K7 RL –K7 Rectifier/ Mains failure Rectifier/ Mains failure RL –K8...
  • Page 48 7400M - Series UPS User Manual Single Module and 1+N Parallel System Additional 3X AS400 Interface (# 100201120008) This board is connected (piggy back style) directly via connector X1 on to the Interface board connector X2 of # 100201120003, in the same place of # 100201120007.

  • Page 49: Remote Alarm Monitor

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Remote Alarm Monitor ( # 690254060700) When used conjunction with Interface board described previously, the Remote Alarm Monitor enables the auxiliary alarms signals to be displayed at a remote station up to 200 meters from the main equipment.
  • Page 50 7400M - Series UPS User Manual Single Module and 1+N Parallel System # 100201120003 Bypass Failure RL –K1 Low Battery RL –K2 Load on Mains RL –K3 Load on Maintenance RL –K4 Bypass Load on Inverter RL –K5 220/240V AC 50 Hz Tata Liebert Monitor...

  • Page 51: Battery Cabinet/ Racks

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 4.5 Battery Racks WARNING Only qualified personnel should install or service batteries. A battery can present a risk of electric shock or burn from high short circuit currents. Eye protection should be worn to prevent injury from accidental electrical arcs.
  • Page 52 7400M - Series UPS User Manual Single Module and 1+N Parallel System Figure 4-7: A Battery Rack To UPS Figure 4.8: Interconnection details for Batteries with ‘Double Positive’ Method 02/02...
  • Page 53 7400M - Series UPS User Manual Single Module and 1+N Parallel System BATTERY SUPPLY TO UPS CABINET Figure 4-9: A typical arrangement of Batteries in a Battery Cabinet 02/02...

  • Page 54: Battery Circuit Breaker Boxes

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Battery Circuit Breaker Boxes The battery circuit breaker box house the battery circuit breaker and its controller board as shown in figure 4-10. It is used to connect the battery to the UPS in Installations where the batteries are not contained in the standard battery cabinet.
  • Page 55 7400M - Series UPS User Manual Single Module and 1+N Parallel System To Battery Temperature Sensor Cabinet dimensions in mm Height : 920 Width : 380 Depth : 185 Control Board terminal block X1 connections to the UPS auxiliary terminal block X3. System X1-5 = Temperature sensing signal X3-2...

  • Page 56: Communications Kits

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 4.7 Communication Kits The Communication kits offer the necessary cable assembly and fixings connections into the communications socket (X8) on the Operator logic board # 100204012220 to a DB25 male connector (X4), located adjacent to the cable access panel as shown in figure 4- Using the wiring configurations shown in figure 4-12 the UPS can be connected to either a personal computer of a modem.
  • Page 57 7400M - Series UPS User Manual Single Module and 1+N Parallel System UPS X4 Modem wiring details for connections of UPS to Modem via DB25 socket D25 m D25 f UPS X4 Modem 2 TD 3 RD 4 RTS wiring details for connections 5 CTS of UPS to Personal 6 DSR...

  • Page 58: Chapter 5 - Maintenance

    Chapter 5 - Maintenance 5. 1 Introduction This chapter contains the procedures necessary to effect general maintenance of the UPS module and battery. Certain procedures entail gaining internal access to the UPS, and should only be undertaken by a competent engineer who is familiar with the operation and layout of the equipment and understands the areas of potential hazard.

  • Page 59: Weekly Checks

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 5.3.2 Weekly Checks Carry out the following checks from the mimic panel and log the results: Measure and record the battery float charge voltage. Measure and record the battery charge current. Measure and record the UPS output voltage on all three phases.

  • Page 60: Extended Service

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 7. Thoroughly clean inside of the equipment enclosure using a vacuum cleaner and low pressure air to remove any foreign debris. 8. Reconnect the UPS input mains power. 9.

  • Page 61: Ups Status Parameters

    7400M - Series UPS User Manual Single Module and 1+N Parallel System UPS Status Parameters The value of the status parameters are displayed on the LCD screen by selecting options from the windows reached via the measurement option on the main screen (see figure 5-1 menu map). Under normal circumstances the default window will be displayed.
  • Page 62 7400M - Series UPS User Manual Single Module and 1+N Parallel System >MEASUREMENT < NORMAL OPERATION FUNCTION MAINTENANCE SETUP 11:15.50 01.02.98 >OUTPUT < >VOLTAGE < OUTPUT : OUTPUT : OUTPUT : [Vrms] INPUT CURRENT VOLTAGE [Vrms] VOLTAGE [Vrms] VOLTAGE [Vrms] BATTERY POWER TEMPERATURE...

  • Page 63: Chapter 6 -Troubleshooting

    Chapter 6 -Troubleshooting Troubleshooting UPS Systems The UPS contains complex electronic control circuits that require a firm understanding in order to carry out comprehensive fault diagnosis and repair of the equipment. The following information aims to provide a trained user with sufficient knowledge to understand the nature of a fault through the correct interpretation of the accompanying alarms and indications, and to carry out any necessary first aid repair action.
  • Page 64 7400M - Series UPS User Manual Single Module and 1+N Parallel System Corrective Action When all the indications have been noted, you should refer to the following fault interpretation charts and carry out the actions detailed against any LED whose status is abnormal. If you are unsure as to how to undertake the actions detailed –...

  • Page 65: Led Interpretation

    7400M - Series UPS User Manual Single Module and 1+N Parallel System LED Interpretation The item number refers to the details shown in figure 6.1. Item Normal I n t e r p r e t a t i o n – a c t i o n State If this green LED is OFF it signifies a problem with the bypass input AC.

  • Page 66: Display Panel Message Interpretation

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Display Panel Message Interpretation The message displayed on the 7400-M can be categorized into two types: (a) ALARM messages- These are messages which need urgent attention and warn of a UPS shut down or imminent shut down – the load would normally transfer to the bypass supply if it is available.
  • Page 67 7400M - Series UPS User Manual Single Module and 1+N Parallel System Item DISPLAY ALARM MESSAGES Interpretation – Action RECT.: SWITCH OPEN Most of the rectifier fault messages are self explanatory, however, the DC bus : OVERVOLTAGE message informs the operator the DC bus bar voltage is too high. RECT.: CURRENT LIMIT BATTERY FUSE FAIL DC BUS: FAST OVER VOL...

  • Page 68: Number Of Messages, Red Led And Buzzer

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Number of messages, red LED and buzzer Every message on the display in front of the UPS corresponds to a number on the two 7-segments displays mounted on UPS logic board. Every message causes a programmed effect on red-alarm LED and buzzer on panel of UPS;...
  • Page 69 7400M - Series UPS User Manual Single Module and 1+N Parallel System MESSAGE Sound INV: OFF VIA DISPLAY Interm Blinking INV: HARDWARE BLOCK Cont. INV: CURRENT LIMIT Cont. INV: OVERTEMPERATURE Cont. INV: UNSYNCHRONIZED Interm Blinking INV: OVERVOLTAGE Cont. INV: UNDERVOLTAGE Cont.

  • Page 70: Chapter 7 - 1 +1 Parallel System

    Chapter 7 – 1 + N Parallel System Generality The 7400-M Series uninterruptible power supply (UPS) system may operate in 1+1 configuration to gain more reliability supplying the load, more power than a single module, more flexibility during maintenance of the system. 7.1.1 Introduction A system 1+N is made by maximum six single modules 7400-M, each equipped with option Parallel Kit...

  • Page 71: Battery Management

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Battery Management: There are two possible ways to connect each module to battery: Maintenance Bypass Maintenance Bypass Power Switc h Q3 Power Switc h Q3 Maintenance Bypass Li ne Maintenance Bypass Li ne Bypass Bypass...
  • Page 72 7400M - Series UPS User Manual Single Module and 1+N Parallel System Maintenance Bypass Pow er Sw itch Q3 Maintenance Bypass Line Bypass a.c. Bypass Pow er Sw itch Q2 Supply Static Bypass Line ( * ) STATIC RECTIFIER INVERTER SWITCH Rectifier Rectifier...

  • Page 73: Design Concept

    The 7400-M UPS manufactured before this series have different serial numbers: they can be upgraded in field to accept Parallel Option: An upgrading kit s.n. 7464103005 is allowable - consult Emerson Network Power Sales Office or Emerson Network Power's Customer Service &...
  • Page 74 7400M - Series UPS User Manual Single Module and 1+N Parallel System From Bypass Supply to Normal Operation The load is supplied by static switch; the sequence of controls to commutate load on inverters is: • The oscillator of one of the two inverters starts to synchronise with mains and imposes its frequency to the system, closing the relays that connect it to parallel- synchronisation bus.

  • Page 75: Operating Instructions

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Operating Instructions 7.2.1 Generality Procedures are very similar to the single module, see Chapter 2 Operating Instructions. Differences are shown below. Battery Management In case of common battery system, when two modules are both operating, if procedures of Battery Test or Boost Charge are begun by one module, the other is forced to do the same thing.

  • Page 76: Reset Of The System After A Recognised Transfer To Bypass Or Epo Action

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 7.2.6 Reset of the system after a Referring to 2.6 recognised transfer to bypass or EPO Action In 1+1 system may be that only one of the two modules has inverter transfer to permanently blocked by some alarm and the other module supplies normally the load (1+1 redundant): in this case, after having identified and fixed the problem, press the Reset push button...

  • Page 77: Installation Procedure

    Operation of fitting the parallel kits and setting of boards and Us to convert it from Single Module to 1+1 must be made by Emerson Network Power's Service and Support trained personnel. This operation involves also setting of system with: separate batteries or common battery, 1+1 redundant or full power.

  • Page 78: Power Cables

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 7.3.2 Power Cables Input Bypass and Rectifier, outputs of modules As shown in fig. 7-1 and 7-2, to achieve maximum plant flexibility, is suggested to use separate insulators and protections for each module: in this case rating of cables is the same as for single module.

  • Page 79: Control Cables

    7400M - Series UPS User Manual Single Module and 1+N Parallel System 7.3.3 Control Cables Parallel bus Each module has it Parallel Board (# 10021620028) connected with the other via two shielded 34-poles flat-cables. The connection is redundant, disconnecting one cable lits a red LED on Parallel boards, disconnecting both cables inverter are blocked (this last function may be disabled during servicing of the system).

  • Page 80: Optional Equipment

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Optional Equipment 7.4.1 Auxiliary Battery These boxes are designed to allow easy use of common battery with two 1+1 modules. Distribution Boxes Their design Is identical, they differ only for the rating of switches and DC current transformers.
  • Page 81 T emperature Sensor 2 T emperature Sensor 1 B a t t e r y C . B . C o n t r o l l e r B o a r d 1 2 3 4 5 BATTERY CIRCUIT BREAKER - m +...
  • Page 82 7400M - Series UPS User Manual Single Module and 1+N Parallel System Cable A: 5 wires + screen Aux. Batt. Distribution box. Battery Cabinet or Battery Switch Box Connector X3 (F) Connector X1 on 100202120009 (screws) Pin 1 not connected Screen Pin 2 Pin 5...

  • Page 83: Specifications For 1+1 Configuration

    7400M - Series UPS User Manual Single Module and 1+N Parallel System Specifications for 1+1 Configuration Specifications are same than single module with the exceptions: Input Rating Units All models Permissible input variation ± 2 fixed Output Paralleled Inverters Ratings Units All Models ±...

  • Page 84: Chapter 8 - Specification Single Module

    Chapter 8 – Specification Single Module Mechanical Characteristics Units Model kVA Rating Height 1400 Width Depth Weight Colour (two tone) Epoxy Polyester, Structure White, and Black Protection Grade With enclosure IP 20 With front door open – IP 20 Ventilation By internal intake fans Air flow Cable entry...
  • Page 85 7400M - Series UPS User Manual Single Module and 1+N Parallel System System Data Units Model kVA Rating Efficiency at 50 load 92.0 92.6 93.1 Efficiency at 100% load 91.5 92.0 92.5 Losses at rated load Losses with battery on boost charge Losses with no load Output Ratings Units...
  • Page 86 7400M - Series UPS User Manual Single Module and 1+N Parallel System Model kVA Rating INTERMEDIATE DC CIRCUIT UNITS Voltage limits of Inverter operation for 380 V d.c. Min – Max – Voltage limits of Inverter operation for 400 V d.c. Min –...

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