Liebert Series 600T manual Operation After End-of-Discharge, Battery Disconnect

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Operation After End-of-Discharge

The battery time screen displayed on the control panel enables you to estimate when battery shutdown will occur. You will have enough time to energize an alternate AC power source or to initiate an orderly shutdown of the critical load. If the battery plant discharges to the shutdown point during an outage, the UPS automatically dis- connects the load, the AC input, and the battery. After AC input power is restored, the rectifier can be manually restarted by the user.

Battery Disconnect

The external module battery disconnect (MBD) circuit breaker is used to isolate the UPS module from the bat- tery during maintenance and to automatically disconnect the battery from the inverter at the end of battery dis- charge. The MBD circuit breaker can be opened or tripped automatically, from the control panel, or manually. It must be closed manually.

Battery Charge Current Limiting

The battery recharge current, after a battery discharge, is limited to between 1 and 25% (adjustable) of the full load discharge current. An additional (optional) charge-limiting circuit can be activated by external dry contact closure (field supplied) for use when operating on a back-up generator. These two levels of control regulate the amount of current that flows from the power source to the battery while the battery is recharging.

The battery charge current limit is factory set at 10% for normal operation and at 1% for alternate power source recharge operation.

Battery Equalize Charge Circuit

The battery equalize charge feature can be manually initiated or it can be programmed to operate automatically. Either can be selected from the battery equalize screen displayed on the control panel.

The battery equalizing charge circuit increases the rectifier/charger output voltage to charge the battery any time there is a power outage of 30 seconds or longer. The equalizing voltage is slightly higher than the float voltage. This decreases the time required to recharge the battery.

NOTE

Do not use equalize charging with valve-regulated lead-acid batteries

Consult the battery manufacturer's manual for specific information about equalize charging.

Theory of Operation

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DISCONTINUED

PRODUCT

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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 SCCsOther Factors to Consider ReliabilityDesigned for Success 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 TransfersRetransfer Inhibited Redundant ModeManual Retransfers 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 ScreenCustomer Alarm Definitions SCC only Load Transfer Procedures SCC onlyBattery Time modules only Output Metering Displays 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 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-UpAir Filters Routine MaintenanceRecord Log 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 LabeledRecommended Test Equipment Reporting a ProblemCorrective Actions Rating Environmental Conditions Battery Operation AdjustmentsElectrical Specifications Voltage Harmonic Content Voltage Adjustment RangePhase Balancing Voltage Transient Recovery TimeSeries 600T UPS
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