Liebert Series 600T manual Load Transfer Procedures Screen

Page 63

3.1.7Load Transfer Procedures Screen

Go to the SCC Master Menu and move the highlighted cursor to LOAD TRANSFER PROCEDURES. 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 dis- played along with transfer status messages and an indication of circuit breaker overlap time. The metered param- eter values on the Load Transfer Procedures screen are updated at half-second intervals.

Refer to 3.3.2 - Load Transfer Procedures for more details.

Figure 36 Load Transfer Procedures Screen

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

2

 

 

 

 

SELECT : MASTER MENU

 

 

 

SYNCHRONIZATION

 

 

 

 

 

 

 

 

 

 

VOLTAGE COMPARISON

 

FREQUENCY

 

UPS

-

A-B

B-C

C-A

 

 

 

-30

0

+30

480

480

480

 

 

4

60.0 Hz

 

 

 

 

 

 

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are no longer active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 comparisons 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 spe- cific tolerance, a manual transfer is possible and OK TO TRANSFER is highlighted.

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 permitted 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 high- lighted. If TRANSFER PROHIBIT is highlighted, manual transfers/retransfers cannot be performed, and auto- matic 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 but- tons to retransfer the load from the bypass line to the UPS system.

Operation 57

DISCONTINUED

PRODUCT

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Page 62 Page 64
Contents Series 600T UPS DIS Product Table of Contents Manual Procedures Figures Tables Important Safety Instructions Overview of this Manual Multi-Module UPS, 65-80 kVA left and 100-500 kVA right System DescriptionProduct Multi-Module 500-750 kVA UPS System Control Cabinets SCCs Types of System Control Cabinets SCCsReliability Designed for SuccessOther Factors to Consider Safety Precautions Modes of Operation Operator Controls DIS Product Options System Control Cabinet General Component DescriptionsUPS Module Battery PlantRectifier/Charger Detailed Component DescriptionsControls Hardware FirmwareIsolation Transformer Input Power FactorBattery Charging Circuit Input Circuit BreakerOperation After End-of-Discharge Battery DisconnectBattery Charge Current Limiting Battery Equalize Charge CircuitOutput Regulation and Overload Performance Non-Linear Load CharacteristicsUnbalanced Load Characteristics InverterShorted SCR Monitoring Static Switch IsolationStatic Bypass Fuse ProtectionLoad Transfers Pulsed Parallel OperationTransfer Inhibited Transfer and Retransfer ConditionsAutomatic Transfers to Bypass Manual TransfersRedundant Mode Manual RetransfersRetransfer Inhibited Display Screen and Operator Controls FeaturesDescription Function System Control Cabinet Operator Controls Sccb Pictured Description Location Function Shutdown ProceduresSwitches Behind SCC Control Panel Door Menu Tree WALK-IN Display modules only Master Menu ScreenLoad Transfer Procedures SCC only Battery Time modules onlyCustomer Alarm Definitions SCC only Monitor/Mimic Display Screen Input Metering DisplaysOutput Metering Displays Item 6 System Status Messages Status/Alarm Message AreasItem 7 Alarm Messages Item 5 Module Status MessagesModule Monitor/Mimic Display Screen Item 5 Alarm Messages Alarm MessagesMOD 1 on Line MOD 2 on Line MOD 3 on Line UPS Ratings UPS Input PWR UPS Ratings UPS Input PWR Bypass Input Load Bypass Input C-A Walk-In Display Screen During Start-Up Walk-In Display ScreenStatus Reports Screen Status Reports ScreensSelect Exit Present StatusEvent History MODULE-0 Event HistoryHistory Status Report Screens History StatusModule SCCSystem Status Battery Cycle Monitor Module OnlyBattery Cycle Monitoring Summary Screen System Configuration System Configuration ScreensDate Screen DateTime Screen TimeDial Auto DialModem Baud Rate Modem Baud RateRetransfer Attempts Maximum Auto-Retransfer AttemptsRemote Monitor Alarm Settings Alarm Limit Settings ScreenProduct Refer to 3.3.2 Load Transfer Procedures for more details Load Transfer Procedures ScreenRefer to 3.3.1 Start-Up Procedure for more details Start-Up Procedures ScreenModule Start- Up Procedures Screen Shutdown Procedures Shutdown Procedures ScreenModule Shutdown Procedures Screen VDC Battery Time Screen Module OnlyBattery Time Screen Example 45 Minute Discharge Aining Rem Tim Calculated La p s e d T im e M in u te s Range of Values for Calculated Battery TimesUP Cursor UP Down Cursor Down Select Choose Meter Calibration ScreenBattery Equalize Recharging Battery Equalize Screen3 Modules Connected Alarm and Status Messages Module Status MessagesLoad Block Messages System Status MessagesOF/UF Abbreviations Used in Alarm MessagesBattery DC Ground FaultBattery CB Open PowerControl Power Manual ResetStatic Switch Bypass PhaseReverse Power AlarmIndications and Other Alarms That Activate Summary Alarms System Configuration Screens or the watchdog timer hasSystem Configuration Screens Load On UPS TemperatureOver-Temperature TimeoutSpecial Functions Alarm MessageRequesting Information Communication InterfacesWorldwide Reporting Auto-DialRemote Monitor Panel Local Reporting to a TerminalLocal Reporting to a Monitor Site Reporting SiteScan or SnmpSeparate / Simultaneous Outputs Scct Load On BypassLoad on Bypass UPS Available OK To TransferLoad on UPS Bypass Available Refer to 3.4 Automatic Operations Momentary OverloadsInput 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 3.3.3 Shutdown ProceduresEmergency Power Off Emergency Power OffSystem Shutdown Refer to 3.2.10 Maintenance BypassLoad on Maintenance Bypass Two Breakers Load on Maintenance Bypass Three Breakers Refer to 3.4 Automatic Operations for more details Manual ProceduresStart-Up Procedure SCC Start-Up B2. Set the Static Switch Disconnects OFF open SCC Start-Up Procedures Screen UPS Module Start-Up Module Start-Up Procedures Screen Product Load Transfer Procedures System Bypass Maintenance Bypass Load TransfersMaintenance Bypass If the load is on Maintenance BypassUPS bypass line is still energized Shutdown Procedures System Shutdown Procedure100 Module Shutdown Procedure Local Emergency Modules Off Lemo Remote Emergency Power Off RepoOverloads Without Transfer Automatic OperationsAutomatic Retransfers to UPS Automatic Transfers to BypassAutomatic Emergency Modules Off Automatic Module Off-LineMaintenance DIS Product Training Liebert Global ServicesMaintenance Agreements The Signature Program Professional Start-UpRoutine Maintenance Record LogAir Filters Battery Safety Precautions Battery MaintenanceDIS Product 112 DIS Product Torque Requirements Matching Battery Cabinets OptionalPower Batteries Rack-Mounted BatteriesDetection of Trouble Torque Specifications Unless Otherwise LabeledReporting a Problem Corrective ActionsRecommended Test Equipment Rating Environmental Conditions Battery Operation AdjustmentsElectrical Specifications Voltage Harmonic Content Voltage Adjustment RangePhase Balancing Voltage Transient Recovery TimeSeries 600T UPS
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