Liebert Series 600T manual OK To Transfer, Load on Bypass UPS Available

Page 85

3.2.2OK To Transfer

The OK to Transfer status message will be displayed when the bypass line and UPS system output power are both available, their voltage, frequency, and phase synchronization are matched within specifications, and the Static Switch Disconnects are closed (ON). An alarm message may be displayed to indicate Load On Bypass. If no alarm is displayed, the operating status is Load On UPS.

When the OK to Transfer message is displayed, you can perform a manual transfer of the load from the UPS sys- tem to bypass, or a manual retransfer of the load from bypass to the UPS system.

Use the Load Transfer Procedures screen at the SCC when performing a manual transfer. Refer to 3.3.2 - Load Transfer Procedures.

The UPS system control logic at the SCC will initiate an automatic transfer to bypass if an overload condition exceeds the system current versus time window, or if a UPS module is taken off line while the system is operat- ing in the non-redundant mode. An automatic retransfer to the UPS system may be initiated when recovering from system overloads lasting less than five minutes. Refer to 3.4 - Automatic Operations.

NOTE

When the critical load is being supplied power from the bypass line, it is exposed to utility power disturbances.

Figure 48 Load on Bypass (UPS Available)

RIB

RIB

RIB

BFB

UPS #3

UPS #2

UPS

#1

CB1

CB1

CB1

SBS

R

R

R

BIB

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)

Operation 79

DISCONTINUED

PRODUCT

Image 85

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 SCCsDesigned for Success ReliabilityOther Factors to Consider Safety Precautions Modes of Operation Operator Controls DIS Product Options System Control Cabinet General Component DescriptionsUPS Module Battery PlantControls Hardware Detailed Component DescriptionsFirmware Rectifier/ChargerBattery Charging Circuit Input Power FactorInput Circuit Breaker Isolation TransformerBattery Charge Current Limiting Battery DisconnectBattery Equalize Charge Circuit Operation After End-of-DischargeUnbalanced Load Characteristics Non-Linear Load CharacteristicsInverter Output Regulation and Overload PerformanceStatic Bypass Static Switch IsolationFuse Protection Shorted SCR MonitoringLoad Transfers Pulsed Parallel OperationAutomatic Transfers to Bypass Transfer and Retransfer ConditionsManual Transfers Transfer InhibitedManual Retransfers Redundant ModeRetransfer 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 ScreenBattery Time modules only Load Transfer Procedures SCC onlyCustomer Alarm Definitions SCC only Input Metering Displays Monitor/Mimic Display ScreenOutput Metering Displays Item 7 Alarm Messages Status/Alarm Message AreasItem 5 Module Status Messages Item 6 System 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 CB Open DC Ground FaultPower BatteryStatic Switch Manual ResetBypass Phase Control PowerIndications and Other Alarms That Activate Summary Alarms AlarmSystem Configuration Screens or the watchdog timer has Reverse PowerOver-Temperature TemperatureTimeout System Configuration Screens Load On UPSSpecial Functions Alarm MessageWorldwide Reporting Communication InterfacesAuto-Dial Requesting InformationLocal Reporting to a Monitor Local Reporting to a TerminalSite Reporting SiteScan or Snmp Remote Monitor PanelSeparate / 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 Maintenance Bypass Maintenance Bypass Load TransfersIf the load is on Maintenance Bypass System 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 Maintenance Agreements The Signature Program Liebert Global ServicesProfessional Start-Up TrainingRecord Log Routine MaintenanceAir Filters Battery Safety Precautions Battery MaintenanceDIS Product 112 DIS Product Power Batteries Matching Battery Cabinets OptionalRack-Mounted Batteries Torque RequirementsDetection of Trouble Torque Specifications Unless Otherwise LabeledCorrective Actions Reporting a ProblemRecommended Test Equipment Rating Environmental Conditions Battery Operation AdjustmentsElectrical Specifications Phase Balancing Voltage Adjustment RangeVoltage Transient Recovery Time Voltage Harmonic ContentSeries 600T UPS

Related manuals

Manual 84 pages 39.26 Kb