Page 2 - Emerson Network Power (India) Private Limited
Dear Customer, Please accept our thanks for giving us the privilege to serve you by choosing a Liebert make ‘UPS’. If this is your first Liebert UPS, we hope it is the beginning of a long relationship which delivers value to your organisation. If you already own and use a Liebert, we are doubly hono...
Page 3 - EMERSON NETWORK POWER; Unauthorized reproduction prohibited; IMPORTANT
This manual contains information concerning the installation, operation and maintenance of the Series 7400 1Phase Uninterruptible Power System (UPS) for the single module and one plus one Systems. All relevant parts of the manual should be read prior to commencing installation. The UPS must be commi...
Page 4 - WAGLE INDUSTRIAL ESTATE; MUMBAI
R E G I S T E R E D A N D H E A D O F F I C E R E G I S T E R E D A N D H E A D O F F I C E EMERSON NETWORK POWER (INDIA) PVT. LTD. PLOT NO. C-20, ROAD NO. 19 WAGLE INDUSTRIAL ESTATE THANE – 400 604 MAHARASHTRA ,INDIA TELEPHONE: (00 91 22) 5807000 / 5802388 FAX: (00 91 22) 5800829 / 5828358 Z O N A ...
Page 6 - Safety Procedure; WARNING
Safety Procedure WARNING This is a class A UPS product. 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 eq...
Page 8 - I N D E X
1 General Description 1 1.1 Introduction 1 1.2 Design Concept 1 1.2.1 Redundant vs Non redundant configuration 1 1.2.2 7400 Module Design 2 1.2.3 Bypass Supplies 3 1.2.4 UPS Power Switch Configuration 4 1.2.5 Battery circuit breaker 4 1.2.6 One plus one parallel control 7 1.2.7 Common Battery 9 1.2....
Page 10 - Design Concepts; Note; C h a p t e r 1; General Description
1 Series 7400 Single Phase 1+N U PS 1.1 Introduction The Uninterruptible Power Supply system is connected between a critical load, such as digital drives & automation, distributed digital Process Control System, telecom equipment, programmable logic controller, mission critical applications, com...
Page 11 - Design
2 Series 7400 Single Phase 1+N U PS As previously mentioned, each of the two modules forming the one-plus-one system is basically a standard single module 7400 series UPS. This section describes an individual module’s operating principles - the effects of the additional parallel control facilities o...
Page 12 - Series 7400 Single Phase 1+N U PS; Figure 2: Series 7400 UPS Isolator configurations
3 Series 7400 Single Phase 1+N U PS The circuit block annotated ‘Static Switch’ in figure 2 contains an electronically controlled switching circuit, which enables the critical load to be connected either to the Inverter output or to a Bypass power source via the ‘static bypass line’. Normally, the l...
Page 13 - Breaker
4 Series 7400 Single Phase 1+N U PS Figure 2 illustrates what is known as the “ Split Bypass” configuration. This is the standard configuration for all 1PH Models In the “ Split Bypass ” configuration the static bypass line is switched by a separate isolator to a dedicated ‘Bypass’ power source whic...
Page 16 - one; One plus One
7 Series 7400 Single Phase 1+N U PS When two of the standard 7400 modules just described are connected together to form a one-plus-one system, each module is fitted with an additional circuit board which allows the two modules to communicate with each other. Communication takes place via a single ri...
Page 17 - Battery charge current sharing:; system to share a common
8 Series 7400 Single Phase 1+N U PS Battery charge current sharing: The illustration in figure 4 shows a dedicated battery installation for each module; however, it is possible to fit an option kit which allows the two modules in a one-plus-one system to share a common battery. Such an installation ...
Page 18 - Common Battery
9 Series 7400 Single Phase 1+N U PS A “Common battery” option kit contains a DCCT (DC Current Transformers) which are fitted to the battery power lines and monitored by the parallel control logic. Each module monitors its battery charge current and compares it with the charge current provided by the...
Page 19 - Mimic Indications; Figure 6: Operator Control Panel; Panel; Uninterruptible Power System; Figure 7: Mimic Panel
10 Series 7400 Single Phase 1+N U PS The operator control panel is divided into three functional areas; ‘Mimic indications’, Control switches’ , and ‘LCD display panel’. Mimic Indications Six LEDs are mounted on a single line diagram to represent the various UPS power paths. These LEDs, which are an...
Page 20 - Figure 8: Control Panel Switches
11 Series 7400 Single Phase 1+N U PS LS5 - Load on bypass: This led illuminates when the output isolator is closed and the load is connected to the bypass via the static switch. LS6 - Load on Inverter: This led illuminates when the output isolator is closed and the load is connected to the inverter ...
Page 23 - Safety Precautions; differential; General
14 Series 7400 Single Phase 1+N U PS 1.3 Safety Precautions In common with other types of high power equipment, dangerous voltages are present within the UPS and battery enclosure. The risk of contact with these voltages is minimised as the live component parts are housed behind a hinged, lockable d...
Page 24 - The audible alarm may annunicate at various points in these; C h a p t e r 2; Operating Instructions; Module System
15 Series 7400 Single Phase 1+N U PS 2.1 Introduction Starting and stopping the one-plus-one system is straightforward, however the modules’ response depends on whether it is configured as a Redundant or Non-Redundant system. The operating procedures are the same irrespective of the selected redunda...
Page 25 - How to turn ON the System from a Shut down condition; (Complete this actions on one module at a time); Step Action
16 Series 7400 Single Phase 1+N U PS How to turn ON the System from a Shut down condition (Complete this actions on one module at a time) This procedure should be followed when turning on the one-plus-one system from a fully powered down condition - i.e. where the load is not being initially supplie...
Page 26 - How to turn ON the System from a Maint. power-down condition; (Complete this action on module at a time); on both modules
17 Series 7400 Single Phase 1+N U PS How to turn ON the System from a Maint. power-down condition (Complete this action on module at a time) This procedure should be followed to start the one-plus-one from a MAINTENANCE power-down condition - i.e. where the load is being initially powered through th...
Page 27 - How to turn OFF the System but continue to provide
18 Series 7400 Single Phase 1+N U PS Mimic panel LEDs LS4 and LS6 should extinguish on both modules and LS5 should illuminate to show that the load has been transferred to the static bypass line. Note: On a redundant system both Inverter OFF switches (S6) must be operated before LS5 illuminates but ...
Page 28 - but pressing the emergency stop pushbutton will not remove the; How to totally Power down the System; AND LOAD
19 Series 7400 Single Phase 1+N U PS IMPORTANT The Maintenance Bypass Isolator may be operated at any time when the UPS is powered down to connect / disconnect each load to the raw maintenance bypass supply if required. Emergency Stop The emergency stop pushbutton is located behind a hinged safety s...
Page 30 - Installation Procedure
21 Series 7400 Single Phase 1+N U PS 3.1 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...
Page 31 - Cooling air flow; positioning and
22 Series 7400 Single Phase 1+N U PS The UPS cabinets can be moved by fork lift or crane. Fork lift apertures are provided in the sides of the base plate and are accessible after removing blanking covers fitted to the side panel ventilation grills. Roof - mounted eye- bolts are fitted to enable the ...
Page 32 - Preliminary Checks
23 Series 7400 Single Phase 1+N U PS In 25kVA to 125 kVA module installations the batteries associated with the UPS equipment are usually contained in a purpose-built battery cabinet/ rack which sits alongside the main UPS equipment. Sealed, maintenance-free batteries are normally used in this type ...
Page 33 - removed before finally fixing the cabinet position.; All UPS models have a stabilising bar fitted to the output; CAUTION; Ensure the stabilising bar fitted to th e output transformer
24 Series 7400 Single Phase 1+N U PS Note: If ‘side’ cable entry is to be used ensure that the blanking plates are removed before finally fixing the cabinet position. 5. All UPS models have a stabilising bar fitted to the output transformer T1 and input choke L1 during shipment. This should be remov...
Page 34 - Connecting UPS Power Cables; N O M I N A L C U R R E N T ( A M P S ) 1 P H . U P S; U P S
25 Series 7400 Single Phase 1+N U PS 3.3 Connecting UPS Power Cables WARNING Ø 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. Ø Check that these supplies are elec...
Page 35 - If the UPS is to be commissioned before the load equipment is; Connections
26 Series 7400 Single Phase 1+N U PS In the 25-40kVA UPS 1 PH models the input mains / bypass cables, UPS output cables and battery cables are connected to busbars located behind a safety cover just below the power isolator switches -as shown in figure 11. A terminal block is used for connecting the...
Page 36 - The earthing and neutral bonding arrangement must be in; Figure 10: Connecting the parallel interface cables.
27 Series 7400 Single Phase 1+N U PS 6. Connect the safety earth and any necessary bonding earth cables to the copper earth busbar located on the floor of the equipment below the power connections. Note:- The earthing and neutral bonding arrangement must be in accordance with local and national code...
Page 38 - U2 N2; NU
29 Series 7400 Single Phase 1+N U PS Figure 14: Cable connections for 105 kVA, 230V, 1 Ph. Figure 13: Cable connection 60 / 80 kVA, 230V, 1 Ph. U2 N2 I4 I3 I2 I1 U3 N3 NI UI VI WI RU NU RS NS RI SI TI + - I1 I2 I3 I4
Page 39 - NS; RU NU
30 Series 7400 Single Phase 1+N U PS I1 I1 I3 I2 NS NU RU RS RI SI TI + - Figure 15: Cable connection 25-40kVA, 110V, 1 Ph. Figure 16: Cable connection 50kVA, 110V, 1 Ph. RU NU - + I1 I1 I3 I2 NS1 RS1 NS2 RS2 RI SI TI
Page 40 - RI SI TI
31 Series 7400 Single Phase 1+N U PS Figure 18: Cable connections for 105 kVA, 230V, 1 Ph. Figure 17: Cable connection 60 / 70 kVA, 110V, 1 Ph. RU + - I1 NU NS RS RI SI TI I2 I3 + - I1 RI SI TI N2 N3 N2 U3 U2 I2 I3
Page 41 - Battery Circuit Breaker Boxes; Several boxes of various current ratings are available and are
32 Series 7400 Single Phase 1+N U PS 3.5 Battery Circuit Breaker Boxes A battery circuit breaker box houses the battery circuit breaker and its controller board and is used to connect the battery to the UPS in installations where the batteries are not contained in the standard battery cabinet. It is...
Page 44 - C h; Optional Equipment
35 Series 7400 Single Phase 1+N U PS Several items of optional equipment are available for fitting to the 7400 series UPS for the use by the customer as required. These options are: o IBM AS400 Interface o IBM AS400 Interface with 4-way output o Output Interface Board o Remote Alarms Board. o Input ...
Page 45 - Board Outputs
36 Series 7400 Single Phase 1+N U PS 4.1 AS400 Interface Board (#100215120003) The AS400 Interface board connects the five most operationally critical UPS alarms to an IBM AS400 computer, which is designed to monitor such alarms and respond to their appearance: * Mains failure * Load on inverter * L...
Page 46 - Control Inputs; A S 4 0 0 O u t p u t s; Figure 21: AS400 Interface Board Outputs
37 Series 7400 Single Phase 1+N U PS TB - M 2 TB - M 1 2 3 4 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Synchro o f f Inverter o f f Mains or RectifierFailure Load on Inverter Low Battery Load on Mains Load on Maintenance Bypass Control Inputs R L 1- 2 R L 2- 2 R L 3- 2 R L 4- 2 R L 5- 2 A S 4 0 0 I N T ...
Page 47 - Inputs
38 Series 7400 Single Phase 1+N U PS 4.2 4-WAY AS400 Interface Board (#100201120004) The 4-way AS-400 Interface board connects fiver critical UPS alarms to four output terminal blocks M1 - M4 as shown in figure 22. These alarm signals can be connected to a IBM AS 400 computer designed to monitor suc...
Page 48 - Outputs from M2 - M 5 t o; Figure 22: Four output AS400 Interface Board
39 Series 7400 Single Phase 1+N U PS 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 M 2 M 3 M 4 M 5 1 2 3 SH1 CN1 A S 4 0 0 I N T E R F A C E B O A R DP a r t N o . 1 0 0 2 0 1 1 2 0 0 0 4 2 3 4 5 Synchro off Inverter off T B - M 1 Control Inputs R L 7 R L 9 R L 6 R L 8 R L 1 0 1 C o m m o n 2 3 4 5 6 7 Mains or R...
Page 51 - Power Supply
42 Series 7400 Single Phase 1+N U PS 4.4 Remote Alarm Monitor (RAM) for Single Module & “1 + 1” UPS System. This will contain following items: 1. Remote Alarm Monitor for Single Module #270154000001. 2. Remote Alarm Monitor for 1+1 Module #270154000003. This unit is always used in conjunction wi...
Page 53 - Short terminal with the help of suitable wire.; TERMINALS OF INTERFACE PCB
44 Series 7400 Single Phase 1+N U PS MAINS OK (BYPASS) RECTIFIER ACTIVE BATTERY OK END OF DISCHARGE INVERTER OK SYNCHRO OK LOAD ON UPS LOAD ON BYPASS OVER TEMPERATURE OVERLOAD MAINT. BYP. ENABLED STATIC BYPASS ISOLATOR CLOSED OUTPUT SWITCH CLOSED SYNCHRO INHIBIT INVERTER ON/OFF 123456789 10111213141...
Page 54 - TERMINALS OF RAM; OUTPUT INTERFACE PCB
45 Series 7400 Single Phase 1+N U PS MAINS OK (BYPASS) RECTIFIER ACTIVE BATTERY OK END OF DISCHARGE INVERTER OK SYNCHRO OK LOAD ON UPS LOAD ON BYPASS OVER TEMPERATURE OVERLOAD MAINT. BYP. ENABLED STATIC BYPASS ISOLATOR CLOSED OUTPUT SWITCH CLOSED SYNCHRO INHIBIT INVERTER ON/OFF OUTPUT INTERFACE PCB ...
Page 56 - Safety Precautions; ALL TIMES; Scheduled Maintenance; Maintenance
47 Series 7400 Single Phase 1+N U PS 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 t...
Page 60 - Troubleshooting UPS systems; Fault Identification; C h a p t e r 6; Troubleshooting; Parameters and
51 Series 7400 Single Phase 1+N U PS 6.1 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 s...
Page 61 - Corrective Action
52 Series 7400 Single Phase 1+N U PS 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 62 - LED
53 Series 7400 Single Phase 1+N U PS LED NORMAL ACTIONS TO BE TAKEN IF ABNORMAL NUMBER STATE LS1 LS2 LS3 ON ON ON If this led is OFF it signifies a problem either with the incoming mains supply or the rectifier section. See accompanying alarm messages. Check the following: a) Input isolator is close...
Page 64 - DISPLAY MESSAGE
55 Series 7400 Single Phase 1+N U PS 6.2 Display Panel Message Interpretation The following table lists the various messages displayed on the operator panel together with a description of their interpretation. DISPLAY MESSAGE INTERPRETATION EMERGENCY STOP INVERTER OFF OR FAILED OVERTEMPERATURE OVERL...
Page 66 - A N N E X U R E; Inter Connection cable details
57 Series 7400 Single Phase 1+N U PS A N N E X U R E Inter Connection cable details Any system essentially needs UPS module. However many customers need auxiliary cubicles such as Input Isolation Transformers, Battery Current Sharing Kit, 1+1 Paralleling kit, Bypass SCVS / SVR or Bypass Line Transfo...
