Liebert 610 manual Load on maintenance bypass two breakers

Page 73

Operation

3.3.9Maintenance Bypass

Maintenance Bypass switchgear allows you to totally isolate the UPS from all power sources, while you maintain power to the critical load.

Your installation may have a two-breaker or three-breaker maintenance bypass or none at all. The main difference between a two-breaker and three-breaker maintenance bypass is the location of the Bypass Input Breaker (BIB).

Another option that may be present at your site is an alternate power source (generator) and an auto- matic transfer switch (ATS).

Note that to totally isolate the UPS system from all power sources, the Main Input switchgear and battery circuit breakers must also be opened.

! CAUTION

Instructions for operating the Maintenance Bypass circuit breakers are on the Maintenance Bypass cabinet. Make sure you understand the proper sequence before operating any circuit breaker. Operating a Maintenance Bypass circuit breaker out of sequence could cut off power to the critical load.

Figure 50 Load on maintenance bypass (two breakers)

TWO BREAKER MAINTENANCE BYPASS SWITCHBOARD

MBFB

MBB

Critical

Load

MIB

AC Output

	UPS MODULE
	Static
BIB	Switch
BIB	Disconnects

Static

Bypass

Switch

Bypass CB

CONTROL POWER

RIB

Controls

Rectifier/

Inverter

INPUT

CB

MAIN INPUT

SWITCHGEAR

Charger

MBD

OUTPUT

CB

Battery

67

Image 73

Contents Series 610 UPS Battery Cabinet Precautions Table of Contents Specifications MaintenanceFigures Tables Important Safety Instructions System Description Designed for Success ReliabilityOther Factors to Consider Safety Precautions Modes of Operation Operator Controls Options Temperature-Compensated Charging Customer Alarm InterfaceBattery Load Testing Automatic RestartGeneral Component Descriptions Battery PlantUPS Module Controls Hardware Detailed Component DescriptionsSoftware Rectifier/Charger Input Power FactorOperation Input Circuit BreakerBattery Disconnect Battery Charging CircuitBattery Charge Current Limiting Battery Equalize Charge CircuitUnbalanced Load Characteristics Non-Linear Load CharacteristicsInverter Output Regulation and Overload PerformanceStatic Bypass Static Switch Backfeed ProtectionBypass Circuit Breaker Pulsed Parallel OperationTransfer 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 Input Metering Displays Monitor/Mimic Display ScreenOutput Metering Displays Item 7 Alarm Messages Status/Alarm Message AreasItem 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 Additional alarm messages Alarm messagesRemote Monitor Standard Remote Monitor Indications ChannelOverload Alarm Alarm Limit Settings ScreenBattery Discharging Low BatteryBattery Rating 100% Battery Shutdown 60 MinutesBattery Rating Temperature Limit Setting OptionalLoad 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-summaryWorldwide Reporting Communication InterfacesAuto-Dial Local Reporting to a Monitor Local Reporting to a TerminalSite Reporting SiteScan or Snmp Requesting InformationRemote Monitor Panel Series 610 terminal commandsSeparate / Simultaneous Outputs Keys FunctionCircuit breaker abbreviations Load on BypassAbbreviation 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 ProceduresOverloads Without Transfer Automatic Operations1000% 150%Automatic Retransfers to UPS Automatic Transfers to Bypass Overload ConditionAutomatic Transfers to Bypass UPS System Faults Enabling Automatic Restart Automatic Restart OptionalSequence of Operation Maintenance Maintenance Agreements The Signature Program Liebert Global ServicesProfessional Start-Up TrainingRecord Log Routine MaintenanceAir Filters Limited Life Components Battery Safety Precautions Battery MaintenanceAvertissement Number of Cells Battery Voltage VDC Nominal Float Matching Battery Cabinets OptionalBattery voltage record Battery retorque valuesRack-Mounted Batteries Detection of Trouble Torque specifications unless otherwise labeledTorque Requirements Upstream Feeder Circuit Breaker Setting Inspections Reporting a ProblemCorrective Actions Recommended Test EquipmentRating Power factor pf KVAKVA Environmental Conditions Specifications applicable to environmentBattery Operation AdjustmentsElectrical Specifications Page Company Behind the Products Technical Support/ServiceLocations United States