GE LP 33 manual UPS Paralleled on the Same Battery, Pay attention to the following recommendations

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3.4UPS PARALLELED ON THE SAME BATTERY

NOTE !

A parallel system with a Common Battery for two or more UPS, requires a particular installation and adequate setting of some parameters, (accessible only through password), and can therefore only be done by a qualified GE engineer.

Usually each UPS Unit runs with its own Battery.

In case of parallel units running with a Common Battery (max. 4 UPS - see Fig. 3.4-1), the sharing circuit between the individual UPS is integrated in the communication bus of the system in order to assure an equal sharing of the Rectifiers output currents.

1 – Rectifier

2 – Inverter

3 – Automatic Bypass

4 – Manual Bypass

5 – Mains Power

6 – Load Bus Bar

7 – External Battery Fuse

8 – Battery

Fig. 3.4-1 Diagram RPA system with UPS on common battery

Pay attention to the following recommendations:

•The units delivered for this functioning mode needs a special parameters setting, so they must be prepared in advance before the installation.

•The installation must be performed only with the UPS system completely shut down.

•The AC Rectifiers input power (5) must be the same, with clockwise phase rotation for each unit.

•Each Rectifier must be set for the same floating DC voltage and the same Battery current limitation.

•It is mandatory to install the fuses / MCB (7) on each line connecting the Rectifiers to the common Battery for maintenance / safety reasons (see Section 4.7.2).

•In case a unit must be powered down for maintenance, switch-OFF the concerned unit before open the DC fuses / MCB on the Battery line (7).

•If an emergency generator set supplies the UPS, and the free contact “Generator ON” is connected to the Customer Interface, connect a separate NO free contact on each parallel unit.

•Do not connect the temperature sensor for automatic battery floating voltage compensation.

•Do not enable the function Boost charge.

Modifications reserved

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OPM_LPS_3UO_30K_40K_0US_V010.doc

Operating Manual LP 33 Series 30 & 40 kVA

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Contents Manufactured by LP 33 SeriesCopyright 2005 by GE Consumer & Industrial Date of issue 01/01/2005 File nameModel Revision Identification NoDear Customer Parallel version secured with RPA Table of contents Only Condition Safety RulesGeneral Risk of electric shock PE Earth GND Ground Safety warningsGeneral Description IntroductionDescription Block Diagram and Main Elements DescriptionCase of parallel system VFI Voltage Frequency Independent Mode operationOperation Modes Through the automatic bypassAutomatic bypass operation Mains recovery operationManual bypass operation Mains failure operationWith redundant parallel system Parallel system for power capacity RPA Parallel SystemParallel system for redundancy Pay attention to the following recommendations UPS Paralleled on the Same BatteryRiazzino CH Made in Switzerland Service and Technical SupportRecycling AT the END of Service Life Layout LP 33 Series / 30 & 40 kVA LayoutControl Panel System HandlingTotal off Command Push Buttons and SwitchesQ1 UPS output switch Q2 Manual bypass switch Do not switch on Q1 and Q2 withApplication on UPS LCD Screen2ms 2ms 5ms 10ms SW VersionAlarms list 4140 Code Alarm Meaning4118 41304563 Code Alarm Meaning 45204530 4531Messages list 4521 Code Message Meaning 43624411 45004763 Code Message Meaning 46024603 4699LP 33 Series Event report LP 33 SeriesMenu Screens Menu Reset Total OFFDate and time set-up Date and time setup = Day = MonthModem enabled = N Init=BEQV1X3&D0S0=2 User parameters screenTelephone numbers set-up Operation mode selection VFI Mode or ECO ModeECO Mode can only be activated on single units ECO ModeExample 2 ECO Mode Stop before ECO Mode Start Example 3 ECO Mode during the night and week-endD1 ÷ d7 Enabling time in function of weekdays ECO Start ECO Stop Executing Mainboard Self Test Switch on the mains power at the input distribution panelOperation Start-up of the LP 33 SeriesCommand Menu Switch On the output switch Q1 PosSwitch On the inverter entering the screen Operation mode selectionEnter must be pressed 2 times Switch OFF the inverter by entering the screenSwitch on the maintenance bypass Q2 Pos UPS shutdown with load transfer on manual bypass Q2Inverter U1= Test Switch OFF the maintenance bypass Q2 PosSwitch on the inverter by entering the screen Start-up following the operation on manual bypass Q2Complete shutdown Udcp= Udcn= Ubp=0VCharge level Autonomy 0min LED Test Restore to normal operation after total offRestore the command total off by entering the screen = 0%Restore to normal operation after EPO Emergency Power Off Reset the UPS by entering the screenActivated Command Menu Inverter on Parallel System start-up of the LP 33 Series Procedures for Parallel System LP 33 SeriesSwitch on the output switch Q1 Pos. I on each unit 40kVA P1Udcp=215V Udcn=215V = 70% LP 33 40kVA P1 Switch on the maintenance bypass Q2 I on each unitSwitch OFF the inverter on each unit entering the screen Udcp=215V Udcn=215V Ubp=164V Ubn=164V F Start-up following the operation on maintenance bypass Q2Open the maintenance bypass switch Q2 Pos on each unit Switch on the inverter on each unit entering the screenU2= U3= Frequency = 60.0Hz Synchronized Udcp= Udcn= Ubp=0V Shutdown of a single unit in a parallel systemWith purpose to separate one unit from the parallel system U1=Executing Mainboard Switch on the output switch Q1 Pos. I on this unitSwitch on the inverter of this unit entering the screen Start-up an additional unit in a parallel systemComplete shutdown of a parallel system U2= U3= Frequency =Synchronized Udcp= Udcn= Ubp=0V Booster, inverter eand Static-Switch shutdown Reset total off of the parallel system40kVA P1 Menu Comandi Reset all UPS by entering the screenOptions General View OptionsBattery Maintenance MaintenanceGeneral Maintenance Cooling FAN MaintenanceService Required Service RequiredDate Description Done by SitePro / Digital EnergyTM SG Series UPS

LP 33 specifications

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