Liebert 610 manual Automatic Transfers to Bypass UPS System Faults

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Operation

3.5.4Automatic Transfers to Bypass (UPS System Faults)

For specified UPS system faults, the control logic will initiate an automatic transfer to bypass fol- lowed immediately by a shutdown and isolation of the UPS system. The output, battery (MBD) and input circuit breakers are open. The bypass breaker will be closed if the bypass line is available. Note that the bypass line is usually not available during Low Battery Shutdown. The circuit diagram is the same as illustrated in Figure 47 for Emergency Module Off.

The following UPS system faults will initiate an automatic transfer to bypass:

DC Overvoltage Shutdown

Hardware Shutdown

Inverter Fault

Low-Battery Shutdown

Output Overvoltage

Overload Shutdown

Overtemperature Timeout

Rectifier Fuse Blown

Reverse Power

Refer to Table 4 for more information regarding these alarm messages.

NOTE

A load transfer to the bypass line will be completed whenever an automatic transfer to bypass is initiated and the bypass line is available. If the OK to Transfer condition is present, the load transfer will be uninterrupted. If the Static Switch Unable alarm message is present for any reason, the automatic transfer will be interrupted for 40 to 120 milliseconds. Because of the reliability of the UPS components, an interrupted load transfer is a very unlikely occurrence.

Your installation may include a Remote Emergency Power Off mode that can be initiated automati- cally by a contact closure in the critical load equipment. Refer to 3.3.7 - Remote Emergency Power Off.

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Contents Series 610 UPS Battery Cabinet Precautions Table of Contents Specifications MaintenanceFigures Tables Important Safety Instructions System Description Reliability Designed for SuccessOther Factors to Consider Safety Precautions Modes of Operation Operator Controls Options Automatic Restart Customer Alarm InterfaceTemperature-Compensated Charging Battery Load TestingBattery Plant General Component DescriptionsUPS Module Detailed Component Descriptions Controls HardwareSoftware 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 InverterPulsed Parallel Operation Static Switch Backfeed ProtectionStatic Bypass Bypass Circuit BreakerTransfer and Retransfer Conditions Three Breaker Maintenance Bypass Switchboard Display Screen and Operator Controls Features100kVA 500kVA 1000kVA Description Function Operator controls, typical systemDescription Function Series 610 UPS operator control panelMenu tree Menu Tree NavigationMaster menu screen Master Menu ScreenOperation Monitor/Mimic Display Screen Input Metering DisplaysOutput Metering Displays Status/Alarm Message Areas Item 7 Alarm MessagesItem 6 Status Messages Monitor/Mimic display example Utility fail Walk-in display screen Walk-In Display ScreenStatus reports screen Status Reports ScreensEvent History Present StatusHistory status report screen History StatusSystem Status Battery Cycle MonitorBattery cycle monitoring summary screen System configuration screens System Configuration ScreensMaximum auto-retransfer attempts screen Maximum Auto-Retransfer AttemptsDate screen DateTime screen TimeAuto dial screen Auto DialSystem Options Language SelectionContinuous Duty Static Switch Optional Standard Remote Monitor Indications Channel Alarm messagesAdditional alarm messages Remote MonitorLow Battery Alarm Limit Settings ScreenOverload Alarm Battery DischargingTemperature Limit Setting Optional Battery Shutdown 60 MinutesBattery Rating 100% Battery RatingLoad transfer procedure screen Load Transfer Procedures ScreenRefer to 3.4.1 Start-Up Procedure for more details Start-Up Procedures ScreenBattery Time Screen Shutdown Procedures ScreenBattery time screen 15-minute discharge Elapsed Time Minutes Upper Limit Actual Lower LimitStatus Reports Screens Meter Calibration ScreenBattery equalize screen Battery Equalize ScreenAlarm and status message screen Alarm and Status Messages Status MessagesAbbreviations used in alarm messages Alarm MessagesAC Input Alarm messages and corrective actionsUPS System Cooling UPS SystemAlarm Message Special Functions Alarm messages-summaryCommunication Interfaces Worldwide ReportingAuto-Dial Requesting Information Local Reporting to a TerminalLocal Reporting to a Monitor Site Reporting SiteScan or SnmpKeys Function Series 610 terminal commandsRemote Monitor Panel Separate / Simultaneous OutputsLoad on Bypass Circuit breaker abbreviationsAbbreviation Circuit Breaker Load on bypass UPS available OK to TransferLoad on UPS bypass available Momentary Overloads Momentary overload through pulse-parallel static switchInput power fail-load on battery Input Power Failure-Load on BatteryLoad on UPS-battery not available Off BatteryEmergency Module Off Refer to 3.4.4 Shutdown ProceduresEmergency power off Remote Emergency Power OffModule Shutdown Refer to 3.3.9 Maintenance BypassLoad on maintenance bypass two breakers Load on maintenance bypass three breakers Start-Up Procedure Manual ProceduresStart-Up Procedure Set the Static Switch Disconnect or to OFF open Start-up procedures Start-Up Procedure Load transfer procedures screen Load Transfer ProceduresMaintenance Bypass Load Transfers Shutdown Procedures Shutdown Procedures Module Shutdown ProcedureLocal Emergency Modules Off Lemo Remote Emergency Power Off RepoBattery exercise control screen above and results below Battery Exercise Procedures150% Automatic OperationsOverloads Without Transfer 1000%Automatic Retransfers to UPS Automatic Transfers to Bypass Overload ConditionAutomatic Transfers to Bypass UPS System Faults Automatic Restart Optional Enabling Automatic RestartSequence of Operation Maintenance Training Liebert Global ServicesMaintenance Agreements The Signature Program Professional Start-UpRoutine Maintenance Record LogAir Filters Limited Life Components Battery Safety Precautions Battery MaintenanceAvertissement Number of Cells Battery Voltage VDC Nominal Float Matching Battery Cabinets OptionalBattery retorque values Battery voltage recordRack-Mounted Batteries Torque specifications unless otherwise labeled Detection of TroubleTorque Requirements Recommended Test Equipment Reporting a ProblemUpstream Feeder Circuit Breaker Setting Inspections Corrective ActionsPower factor pf KVA RatingKVA Environmental Conditions Specifications applicable to environmentBattery Operation AdjustmentsElectrical Specifications Page United States Technical Support/ServiceCompany Behind the Products Locations