Liebert NX UPS System Paralleled UPS Modules, Cabinet Installation, Distribution Cabinet

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UPS Multi-Module Installation

3.2Paralleled UPS Modules

The basic installation procedure of a parallel system comprising two or more UPS modules is the same as that of single module system. The following sections only introduce the installation proce- dures specific to the parallel system.

3.2.1Cabinet Installation

Place the UPS modules side by side and interconnect as shown in Figure 14. The distribution panel (external bypass cabinet) is optional but recommended for ease of maintenance and system testing.

Figure 14 Typical 1+N system block diagram with common input supply, with separate batteries and optional output / bypass distribution panel

SUPPLIED BY OTHERS

INPUT MAINS	INPUT MAINS
SUPPLY L1, L2, L3, N	SUPPLY L1, L2, L3, N

UPS1 CB1

RECTIFER

FUSES

STATIC

SWITCH

SW1-C

UPS2

FUSES

CB1

RECTIFER

SW1-C

STATIC

SWITCH

CHARGER	CHARGER
BATTERY 1	BATTERY 2
INVERTER	INVERTER
	SW1-D
SW1-A	SW1-A
L1, L2, L3, N	L1, L2, L3, N
Q1EXT	Q2EXT
QUPS	QBYP
	Distribution Cabinet

TO LOAD

27

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Contents Liebert NX UPS Page Table of Contents Dual Bus System UPS MULTI-MODULEINSTALLATIONOperator Control Panel and Display Operating ProceduresOPTIONS-FORASSEMBLY Inside the UPS Cabinet Technical SpecificationsFigures Tables Options Model Identification Feature Set for Region InputOutput Aust/NZConformity and Standards Safety PrecautionsBattery Voltage Exceeds 400VDC User-Serviceable PartsPreliminary Checks IntroductionStorage External Battery RoomLocation UPS RoomMoving the Cabinets PositioningSystem Cabinets 2 10 to 30kVA UPSExternal Protective Devices UPS Output External BatteryEarth Leakage RCD Distance from floor to connection point on the equipment Power CablesMaximum steady state AC and DC currents Common Input Connections Cable TerminationOutput System Connections Control Cables and Communication Monitor Board FeaturesInput Dry Contacts X3 Ancillary Control and AlarmsMaintenance Bypass Cabinet Interface Dry ContactsJumper connection for BCB interface External Circuit-Breaker InterfaceJ28 Output Dry ContactsOutput dry contact relays +12V J13 J21X6 Analog Input Interface Emergency Power Off InputX5 Auxiliary DC Power Output X7 External Battery Temperature Detector InterfaceSerial Ports RS232-1 and RS232-2 External Bypass Switch InterlockBattery Start Facility Battery Start ButtonBattery Installation Hazardous battery voltage present behind covers SafetyBattery Cabinet Name W2 L=5m Name W1 L=30m Battery Temperature Sensor OptionalMoving the Battery Cabinets Cable W2 is packed with the temperature sensorGeneral Arrangement Drawings Battery cabinet bottom cable entry locationBottom cable entry Battery cabinet internal layout Item # Item Name Battery Power CablesConnection Principles Fitting the Batteries Battery ControlConnecting the Battery Battery Room DesignX21 GeneralX23 X24 Monitor Board X24Distribution Cabinet Cabinet InstallationParalleled UPS Modules External Protective Devices Power CablesControl Cables Intermodule Control Hot-Standby UPS ModulesInput Distribution Upstream Dual Bus System Parallel Board DBS Cable X2-2 X1-1 Parallel System Control WiresExtended Dual Bus Synchronization Option DBS Interface Box Parallel Board X2-2 X1-1 Parallel SystemInstallation Drawings General arrangement-10-30kVA UPS module External Battery Input Output Main Input Bypass Input NXe 10-30kVA Top View Internal battery layout and connecting-GP12120 F2 12AH/12V Internal battery layout Split-Bypass Input Battery Temperature Compensation Static Transfer SwitchSocket Outlet Redundant Control Power Supply BoardMulti Module UPS-1+N Modes of Operation Parallel Redundancy Mode System Expansion Bypass ModeMaintenance Mode Manual Bypass ECO Mode Single UPS OnlyNormal Function Battery Management-Set During CommissioningBattery Protection settings by commissioning engineer UPS operating modes Power SwitchesRotary switch configurations UPS Startup Start-Up ProcedureIndicator State Verify Switching Between Operation Modes Powering Down the UPS Switching the UPS from Normal to Maintenance BypassPowering Down the UPS and Maintaining Power to Load Auto Restart Emergency Shutdown With EPOChanging the Current Date and Time Command PasswordLanguage Selection Isolating One Module in a Multi-Module System LED Function Status Inserting One Module into a Multi-Module SystemButton Function UPS control and display panel componentsComponent # Function Audible Alarm Buzzer Mimic Power FlowMenu key Icons and their meaning Direct Access Push Buttons KeysLCD Monitor and Menu keys Displayed on the front LCD. When not activated, Load System Battery RecordsLanguage Settings Command Version When configured, input transformer voltages areMenu Type Item Type Explanation Detailed Description of Menu ItemsUPS system window Descriptions of UPS menus and data window itemsNumber to be dialed to send an alarm notification Message Description / Suggested Action if any UPS messagesBypass voltage exceeds the limit UPS is confirmed to overload and the overload times out UPS messages Prompt Meaning Dynamic Energy Flow Chart and UPS Help ScreenPrompt Pop-Up Windows Prompt windows, meaningsDefault screen Default Screen SaverTerminal Name Definition Battery Ground Fault DetectionProtection AC Fan Redundant Fan for Power ModuleFan120 Fan120OC Web Card data summary window OC Web Card SNMP/HTTP Network Interface CardRelay card jumpers Relay Card pin configurationRelay Card Multiport-4 CardPin Description SiteNet MultiPort4 Intellislot pin assignmentAssignment OC485 Web Card Modbus, Jbus, IGM Net Remote Alarm MonitorDust Filter for 10-30kVA Dust filter replacementOverall efficiency, heat losses and air exchange Environmental characteristicsConformity and Standards Compliance with European, international standardsRectifier AC input mains Mechanical characteristicsInverter output to critical load Bypass mains input Technical Specifications Technical Specifications Page That Ne tIti Ti n