Liebert 1000kVA manual Load Transfer Procedures Screen

Page 60

Operation

3.2.8Load Transfer Procedures Screen

Go to the SCC Master Menu and move the highlighted cursor to LOAD TRANSFER PROCE- DURES. Note that this screen is displayed at the System Control Cabinet but is not required at the UPS modules. Press the Select pad and the Load Transfer Procedures screen is displayed.

The Load Transfer Procedures screen contains instructions to transfer the critical load between the UPS system and the bypass line. Comparisons of the UPS and bypass voltage, frequency and phase synchronization are displayed along with transfer status messages and an indication of circuit breaker overlap time. The metered parameter values on the Load Transfer Procedures screen are updated at half-second intervals.

Refer to 3.4.3 - Load Transfer Procedures for more details.

Figure 41 Load transfer procedures screen

 

 

 

 

 

 

 

1

 

 

2

 

 

 

 

SELECT : MASTER MENU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VOLTAGE COMPARISON

 

 

 

SYNCHRONIZATION

 

 

 

 

A-B

B-C

C-A

 

FREQUENCY

-30

0

+30

UPS

-

480

480

480

 

60.0 Hz

4

 

 

 

 

BYPASS

-

481

480

479

60.0 Hz

 

 

 

 

ON UPS

OK TO TRANSFER

TRANSFER PROHIBIT

3

MANUAL

 

 

UPS LEAD

= 2 Deg

 

TRANSFER INSTRUCTIONS

1.Adjust the UPS voltage until it equals the bypass voltage with the VOLTAGE ADJUST pot.

2.If the OK TO TRANSFER message is highlighted, simultaneously press the BYPASS and CONTROL ENABLE buttons.

3.Verify that the transfer was successful by checking the breaker status on the "MONITOR/MIMIC" screen.

4.Press the ALARM RESET button to clear alarms which are no longer active

Item 1 - Voltage Comparisons: This chart shows the UPS and bypass voltage and frequency com- parisons between each of the three phases. If the UPS and bypass voltages are not within specified tolerances, a manual transfer is not permitted and TRANSFER PROHIBIT is highlighted.

The Voltage Adjust knob (push-to-turn), located on the SCC Operator Control Panel (Figure 10), is used to match the UPS output voltage to the bypass voltage. When the UPS and bypass voltages match within the specific tolerance, a manual transfer is possible and OK TO TRANSFER is high- lighted.

! CAUTION

The UPS output voltage responds very slowly to inputs from the Voltage Adjust knob. Make small adjustments and wait several seconds each time for voltage to stabilize before continuing.

Item 2 - Synchronization: This display shows the phase synchronization between the UPS output and bypass power. If the phase displacement is outside of the tolerance, a manual transfer is not per- mitted and TRANSFER PROHIBIT is highlighted.

During normal operation, the synchronization display should read UPS LEAD from zero to 4 degrees.

Item 3 - Status Messages: Three messages are constantly displayed here. Only the active message is highlighted. If TRANSFER PROHIBIT is highlighted, manual transfers/retransfers cannot be performed and automatic retransfers will not be initiated.

Item 4 - Manual Transfer Instructions: These instructions assist the operator in transferring the critical load between the UPS system and the bypass line.

If the load is on the bypass line, step 2 on the screen will instruct you to press the UPS and Control Enable buttons to retransfer the load from the bypass line to the UPS system.

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Contents Series 610 UPS Battery Cabinet Precautions Table of Contents Maintenance SpecificationsFigures Tables Important Safety Instructions System Description Multi-Module UPS, 100-500kVAMulti-Module UPS, 500-750kVA Reliability Types of System Control Cabinets SCCsDesigned for Success Safety Precautions Input Power FailureModes of Operation Other Factors to ConsiderOperator Controls 1989-2003 Battery OptionsBattery Racks or Cabinets Module Battery DisconnectThree Breaker Maintenance Bypass Two Breaker Maintenance BypassGeneral Component Descriptions System Control CabinetBattery Plant UPS ModuleDetailed Component Descriptions Controls HardwareSoftware Input Power Factor Rectifier/ChargerOperation Input Circuit BreakerBattery Charging Circuit Battery DisconnectBattery Charge Current Limiting Battery Equalize Charge CircuitNon-Linear Load Characteristics Unbalanced Load CharacteristicsInverter Output Regulation and Overload PerformanceStatic Bypass Fuse ProtectionShorted SCR Monitoring Static Switch Isolation Pulsed Parallel OperationLoad Transfers Transfer and Retransfer Conditions Redundant Mode Retransfer InhibitedFeatures Display Screen and Operator Controls500kVA 1000kVADescription Function Operation Refer to 3.4.5 Shutdown Procedures Numbers are used as keys to data in , belowDescription Location Function Switches behind SCC control panel door Menu Tree Navigation Menu treeMaster Menu Screen SCC Master MenuModule Master Menu Operation SCC Monitor/Mimic Display Screen Input Metering DisplaysOutput Metering Displays Status/Alarm Message Areas Item 7 Alarm MessagesItem 5 Module Status Messages Item 6 System Status MessagesModule Monitor/Mimic Display Screen Module Monitor/Mimic display screenAlarm Messages Item 5 Alarm MessagesSCC Display Module 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 Walk-in display screen during start-upStatus Reports Screens Present StatusEvent History SCC Status ReportModule Status Report History Status History status report screensAlarm conditions that freeze history data gathering Alarm in SCC Alarm in ModuleBattery Cycle Monitor-Module Only System StatusBattery cycle monitoring summary screen System Configuration Screens SCC system configuration screenDate Date screenTime Time screenAuto dial setting screen Auto DialModem Baud Rate Maximum Auto-Retransfer AttemptsSystem Current Rating Language SelectionSystem Options Retransfer AttemptsBattery test screen-MMU only Continuous Duty Static Switch OptionalRemote Monitor SCC and module remote monitor indicationsAlarm Limit Settings Screen Module alarm limit settings screenBattery Float Voltage Temperature Limit Setting OptionalLoad Transfer Procedures Screen Refer to 3.4.3 Load Transfer Procedures for more detailsStart-Up Procedures Screen Refer to 3.4.1 SCC Start-Up Procedure for more detailsShutdown Procedures Screen Module start- up procedures screensSCC shutdown procedures screen Battery Time Screen Module Only Battery time screen 15 minute dischargeUpper Limit Actual Lower Limit Elapsed Time MinutesOperation Meter Calibration Screen Meter calibration screenBattery Equalize Screen Battery equalize screenAlarm and Status Messages Module Status Messages System Status MessagesAbbreviations used in alarm messages Load Block MessagesAbbreviation Definition Alarm messages meaning and corrective action Manual Reset Static SwitchBypass Phase Control PowerReverse Power Inverter FaultTransfer Module N OffBattery Overtemp OvertemperatureTimeout New AlarmAlarm messages summary Alarm MessageSpecial Functions Communication Interfaces Worldwide ReportingAuto-Dial Requesting InformationLocal Reporting to a Terminal Local Reporting to a MonitorSite Reporting SiteScan or Snmp Series 610 terminal commands Remote Monitor PanelSeparate / Simultaneous Outputs Circuit breaker abbreviations Abbreviation Circuit Breaker Load on Bypass OK to TransferLoad on bypass, UPS available Momentary overload, pulsed static bypass switch Momentary OverloadsInput Power Failure-Load on Battery Input power fail-load on batteryOne Module Off-Line One module off-line, load on UPSOff Battery Load on UPS-battery not availableRefer to 3.4.5 Shutdown Procedures Emergency Modules OffRemote Emergency Power Off Emergency power offRefer to 3.3.10 Maintenance Bypass System ShutdownLoad on maintenance bypass, two breakers Manual Procedures SCC Start-Up ProcedureRefer to 3.5 Automatic Operations for more details Operation Operation SCC start-up procedures screen UPS Module Start-Up Module start-up procedures screen Operation Load Transfer Procedures Manual Transfer Instructions UPS LeadMaintenance Bypass Load Transfers If the load is on Maintenance BypassIf the load is on the UPS System Bypass Shutdown Procedures System Shutdown Procedure Module Shutdown Procedure Remote Emergency Power Off Repo Automatic OperationsLocal Emergency Modules Off Lemo Overloads Without Transfer Automatic Transfers to Bypass1000% 150%Automatic Retransfers to UPS Automatic Module Off-LineAutomatic Emergency Modules Off Maintenance Liebert Global Services Maintenance Agreements The Signature ProgramProfessional Start-Up TrainingRoutine Maintenance Record LogAir Filters Limited Life Components Battery Maintenance Battery Safety PrecautionsAvertissement Matching Battery Cabinets Optional Number of Cells Battery Voltage VDC Nominal FloatBattery retorque values Battery voltage recordRack-Mounted Batteries Torque specifications unless otherwise labeled Detection of TroubleTorque Requirements Reporting a Problem Upstream Feeder Circuit Breaker Setting InspectionsCorrective Actions Recommended Test EquipmentPower factor pf KVA RatingKVA Specifications applicable to environment Environmental ConditionsAdjustments Battery OperationElectrical Specifications Specifications 112 Page Technical Support/Service Company Behind the ProductsLocations United States
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