Liebert 1000kVA manual Input Power Failure-Load on Battery, Input power fail-load on battery

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Operation

3.3.4Input Power Failure—Load on Battery

If the utility AC power source fails or is outside the acceptable range, the battery plant becomes the power source for the UPS module inverters. The UPS system continues to supply power to the critical load and also to the controls of the UPS modules and the SCC.

You can use the Battery Time screen at the UPS modules to monitor the present battery voltage com- pared to the shutdown value. The length of time the battery can sustain the load depends on the size of the load and the size and condition of the battery plant. The battery plant is usually large enough to supply a 100% rated load for 15 minutes.

Alarm messages that indicate battery status are Battery Discharge, Low Battery and Battery Shut- down. The voltage limits for these alarms are displayed on the UPS module Alarm Limit Settings screen. These limits were selected for your installation by Liebert Global Services during initial start- up.

The battery block in the UPS module Monitor/Mimic Display indicates Charge or Discharge and the current in Amperes. Maximum battery discharge current ranges from 326 amps (for 150kVA) to 1620 amps (for 750kVA). Refer to the separate Installation Manual or drawings for specific data on your system.

Figure 56 Input power fail—load on battery

RIB

RIB

RIB

BFB

UPS #3

UPS #2

UPS

#1

CB1

CB1

CB1

SBS

BIB

R

R

R

SBB

I

I

I

MBB

CB2

CB2

CB2

System

SKRU

Controls

Output

MIB

										SCCT
			MBD							To Critical Load
										To Critical Load
						MBD				MBD
	Battery									SCCT
				Battery			Battery			SCCT
				Battery			Battery			(can accommodate up to 6 UPS modules)
										(can accommodate up to 6 UPS modules)

77

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Contents Series 610 UPS Battery Cabinet Precautions Table of Contents Specifications MaintenanceFigures Tables Important Safety Instructions Multi-Module UPS, 100-500kVA System DescriptionMulti-Module UPS, 500-750kVA Designed for Success ReliabilityTypes of System Control Cabinets SCCs Other Factors to Consider Safety PrecautionsInput Power Failure Modes of OperationOperator Controls 1989-2003 Options BatteryTwo Breaker Maintenance Bypass Battery Racks or CabinetsModule Battery Disconnect Three Breaker Maintenance BypassSystem Control Cabinet General Component DescriptionsUPS Module Battery PlantSoftware Detailed Component DescriptionsControls Hardware Input Circuit Breaker Input Power FactorRectifier/Charger OperationBattery Equalize Charge Circuit Battery Charging CircuitBattery Disconnect Battery Charge Current LimitingOutput Regulation and Overload Performance Non-Linear Load CharacteristicsUnbalanced Load Characteristics InverterShorted SCR Monitoring Static BypassFuse Protection Load Transfers Static Switch IsolationPulsed Parallel Operation Transfer and Retransfer Conditions Retransfer Inhibited Redundant ModeDisplay Screen and Operator Controls FeaturesDescription Function 500kVA1000kVA Operation Description Location Function Refer to 3.4.5 Shutdown ProceduresNumbers are used as keys to data in , below Switches behind SCC control panel door Menu tree Menu Tree NavigationModule Master Menu Master Menu ScreenSCC Master Menu Operation Output Metering Displays SCC Monitor/Mimic Display ScreenInput Metering Displays Item 6 System Status Messages Status/Alarm Message AreasItem 7 Alarm Messages Item 5 Module Status MessagesModule Monitor/Mimic display screen Module Monitor/Mimic Display ScreenItem 5 Alarm Messages Alarm MessagesModule Display SCC DisplayMonitor/Mimic display example Utility fail KVA / 217 kW 325A 325A 325A MOD On Line OFF Line SUM ALM B-C C-A 0V 0V Not OK to Transfer Static Switch Connected Walk-in display screen during start-up Walk-In Display ScreenPresent Status Status Reports ScreensModule Status Report Event HistorySCC Status Report History status report screens History StatusAlarm in SCC Alarm in Module Alarm conditions that freeze history data gatheringSystem Status Battery Cycle Monitor-Module OnlyBattery cycle monitoring summary screen SCC system configuration screen System Configuration ScreensDate screen DateTime screen TimeAuto Dial Auto dial setting screenMaximum Auto-Retransfer Attempts Modem Baud RateRetransfer Attempts System Current RatingLanguage Selection System OptionsContinuous Duty Static Switch Optional Battery test screen-MMU onlySCC and module remote monitor indications Remote MonitorModule alarm limit settings screen Alarm Limit Settings ScreenTemperature Limit Setting Optional Battery Float VoltageRefer to 3.4.3 Load Transfer Procedures for more details Load Transfer Procedures ScreenRefer to 3.4.1 SCC Start-Up Procedure for more details Start-Up Procedures ScreenModule start- up procedures screens Shutdown Procedures ScreenSCC shutdown procedures screen Battery time screen 15 minute discharge Battery Time Screen Module OnlyElapsed Time Minutes Upper Limit Actual Lower LimitOperation Meter calibration screen Meter Calibration ScreenBattery equalize screen Battery Equalize ScreenSystem Status Messages Alarm and Status Messages Module Status MessagesAbbreviation Definition Abbreviations used in alarm messagesLoad Block Messages Alarm messages meaning and corrective action Control Power Manual ResetStatic Switch Bypass PhaseModule N Off Reverse PowerInverter Fault TransferNew Alarm Battery OvertempOvertemperature TimeoutSpecial Functions Alarm messages summaryAlarm Message Requesting Information Communication InterfacesWorldwide Reporting Auto-DialSite Reporting SiteScan or Snmp Local Reporting to a TerminalLocal Reporting to a Monitor Separate / Simultaneous Outputs Series 610 terminal commandsRemote Monitor Panel Circuit breaker abbreviations Abbreviation Circuit Breaker OK to Transfer Load on BypassLoad on bypass, UPS available Momentary Overloads Momentary overload, pulsed static bypass switchInput power fail-load on battery Input Power Failure-Load on BatteryOne module off-line, load on UPS One Module Off-LineLoad on UPS-battery not available Off BatteryEmergency Modules Off Refer to 3.4.5 Shutdown ProceduresEmergency power off Remote Emergency Power OffSystem Shutdown Refer to 3.3.10 Maintenance BypassLoad on maintenance bypass, two breakers Refer to 3.5 Automatic Operations for more details Manual ProceduresSCC Start-Up Procedure Operation Operation SCC start-up procedures screen UPS Module Start-Up Module start-up procedures screen Operation Manual Transfer Instructions UPS Lead Load Transfer ProceduresIf the load is on the UPS System Bypass Maintenance Bypass Load TransfersIf the load is on Maintenance Bypass Shutdown Procedures System Shutdown Procedure Module Shutdown Procedure Local Emergency Modules Off Lemo Remote Emergency Power Off RepoAutomatic Operations 150% Overloads Without TransferAutomatic Transfers to Bypass 1000%Automatic Emergency Modules Off Automatic Retransfers to UPSAutomatic Module Off-Line Maintenance Training Liebert Global ServicesMaintenance Agreements The Signature Program Professional Start-UpAir Filters Routine MaintenanceRecord Log Limited Life Components Battery Safety Precautions Battery MaintenanceAvertissement Number of Cells Battery Voltage VDC Nominal Float Matching Battery Cabinets OptionalRack-Mounted Batteries Battery retorque valuesBattery voltage record Torque Requirements Torque specifications unless otherwise labeledDetection of Trouble Recommended Test Equipment Reporting a ProblemUpstream Feeder Circuit Breaker Setting Inspections Corrective ActionsKVA Power factor pf KVARating Environmental Conditions Specifications applicable to environmentBattery Operation AdjustmentsElectrical Specifications Specifications 112 Page United States Technical Support/ServiceCompany Behind the 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