Emerson Series 610 manual Momentary Overloads, Momentary overload, pulsed static bypass switch

Page 82

Operation

3.3.3Momentary Overloads

An overload in the critical load will continue to be supplied by the UPS system if the overload condi- tion does not exceed the current versus time curve of overload capacity for either the SCC rating or for the number of modules on-line.

For momentary overloads exceeding 155% of rated system (SCC) current, the static switch turns on for 40 milliseconds to provide current from the bypass line in parallel with current from the UPS sys- tem output. Up to 1000% of rated current can be supplied for less than one cycle, while up to 500% of rated load can be sustained for the full 40 milliseconds of pulsed-parallel operation. By providing two power sources simultaneously, high current can be supplied to the critical load with full output volt- age regulation. The critical load can be supported through inrush currents and momentary faults without operating the motorized circuit breakers. Pulse paralleling also serves, under some circum- stances, as a backup in the event that an external bypass feeder breaker (e.g., BFB) trips open during this pulse-paralleling period, retaining the UPS inverter connection with the critical load.

If an overload condition exceeds 40 milliseconds, the UPS system continues to supply power to the critical load if it remains within the current-versus-time curve of overload capacity. If the system overload capacity is exceeded, the UPS control logic at the SCC initiates an automatic transfer to the bypass line by operating the static bypass switch and the motorized system circuit breakers (SBB and UPS Output). Refer to 3.5 - Automatic Operations.

Figure 55 Momentary overload, pulsed static bypass switch

 

 

 

 

RIB

 

 

 

 

RIB

 

 

RIB

 

 

 

 

BFB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UPS #3

UPS #2

UPS

#1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CB1

 

 

CB1

 

 

CB1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SBS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BIB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

R

 

R

 

 

SBB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

 

 

I

 

I

 

 

 

 

 

 

 

 

 

 

 

MBB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CB2

 

 

 

CB2

 

 

 

CB2

 

System

 

 

 

 

SKRU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Controls

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Output

MIB

 

 

 

 

 

 

 

 

 

SCCT

 

 

MBD

 

 

 

 

 

 

To Critical Load

 

 

 

 

 

 

 

 

 

 

 

 

MBD

 

 

 

MBD

 

 

 

 

 

 

 

 

 

SCCT

Battery

 

 

 

 

 

 

Battery

Battery

(can accommodate up to 6 UPS modules)

 

 

 

 

 

 

 

 

 

76

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Contents Liebert Series 610 UPS Battery Cabinet Precautions Table of Contents Maintenance SpecificationsFigures Tables Important Safety Instructions System Description Multi-Module UPS, 100-500kVAMulti-Module UPS, 500-750kVA Types of System Control Cabinets SCCs ReliabilityDesigned for Success Modes of Operation Safety PrecautionsInput Power Failure Other Factors to ConsiderOperator Controls 1989-2003 Battery OptionsThree Breaker Maintenance Bypass Battery Racks or CabinetsModule Battery Disconnect Two Breaker Maintenance BypassGeneral Component Descriptions System Control CabinetBattery Plant UPS ModuleControls Hardware Detailed Component DescriptionsSoftware Operation Input Power FactorRectifier/Charger Input Circuit BreakerBattery Charge Current Limiting Battery Charging CircuitBattery Disconnect Battery Equalize Charge CircuitInverter Non-Linear Load CharacteristicsUnbalanced Load Characteristics Output Regulation and Overload PerformanceFuse Protection Static BypassShorted SCR Monitoring Pulsed Parallel Operation Static Switch IsolationLoad Transfers Transfer and Retransfer Conditions Redundant Mode Retransfer InhibitedFeatures Display Screen and Operator Controls1000kVA 500kVADescription Function Operation Numbers are used as keys to data in , below Refer to 3.4.5 Shutdown ProceduresDescription Location Function Switches behind SCC control panel door Menu Tree Navigation Menu treeSCC Master Menu Master Menu ScreenModule Master Menu Operation Input Metering Displays SCC Monitor/Mimic Display ScreenOutput Metering Displays Item 5 Module Status Messages Status/Alarm Message AreasItem 7 Alarm Messages Item 6 System Status MessagesModule Monitor/Mimic Display Screen Module Monitor/Mimic display screenAlarm Messages Item 5 Alarm MessagesSCC Display Module DisplayMonitor/Mimic display example Utility fail 2700kVAKVA//2170 KWkW 325A0A 325A0A 325A0A Upsinputpwr Battery MOD 1 OFF Line SUM ALM MVODLTS2 OFF540 Line SUM ALM Walk-In Display Screen Walk-in display screen during start-upStatus Reports Screens Present StatusSCC Status Report Event HistoryModule Status Report History Status History status report screensAlarm conditions that freeze history data gathering Alarm in SCC Alarm in ModuleBattery Cycle Monitor-Module Only System StatusBattery cycle monitoring summary screen System Configuration Screens SCC system configuration screenDate Date screenTime Time screenAuto dial setting screen Auto DialModem Baud Rate Maximum Auto-Retransfer AttemptsSystem Options System Current RatingLanguage Selection Retransfer AttemptsBattery test screen-MMU only Continuous Duty Static Switch OptionalRemote Monitor SCC and module remote monitor indicationsAlarm Limit Settings Screen Module alarm limit settings screenBattery Float Voltage Temperature Limit Setting OptionalLoad Transfer Procedures Screen Refer to 3.4.3 Load Transfer Procedures for more detailsStart-Up Procedures Screen Refer to 3.4.1 SCC Start-Up Procedure for more detailsShutdown Procedures Screen Module start- up procedures screensSCC shutdown procedures screen Battery Time Screen Module Only Battery time screen 15 minute dischargeUpper Limit Actual Lower Limit Elapsed Time MinutesOperation Meter Calibration Screen Meter calibration screenBattery Equalize Screen Battery equalize screenAlarm and Status Messages Module Status Messages System Status MessagesLoad Block Messages Abbreviations used in alarm messagesAbbreviation Definition Alarm messages meaning and corrective action Bypass Phase Manual ResetStatic Switch Control PowerTransfer Reverse PowerInverter Fault Module N OffTimeout Battery OvertempOvertemperature New AlarmAlarm Message Alarm messages summarySpecial Functions Auto-Dial Communication InterfacesWorldwide Reporting Requesting InformationLocal Reporting to a Monitor Local Reporting to a TerminalSite Reporting SiteScan or Snmp Remote Monitor Panel Liebert Series 610 terminal commandsSeparate / Simultaneous Outputs Circuit breaker abbreviations Abbreviation Circuit Breaker Load on Bypass OK to TransferLoad on bypass, UPS available Momentary overload, pulsed static bypass switch Momentary OverloadsInput Power Failure-Load on Battery Input power fail-load on batteryOne Module Off-Line One module off-line, load on UPSOff Battery Load on UPS-battery not availableRefer to 3.4.5 Shutdown Procedures Emergency Modules OffRemote Emergency Power Off Emergency power offRefer to 3.3.10 Maintenance Bypass System ShutdownLoad on maintenance bypass, two breakers SCC Start-Up Procedure Manual ProceduresRefer to 3.5 Automatic Operations for more details Operation Operation SCC start-up procedures screen UPS Module Start-Up Module start-up procedures screen Operation Load Transfer Procedures Manual Transfer Instructions UPS LeadIf the load is on Maintenance Bypass Maintenance Bypass Load TransfersIf the load is on the UPS System Bypass Shutdown Procedures System Shutdown Procedure Module Shutdown Procedure Automatic Operations Remote Emergency Power Off RepoLocal Emergency Modules Off Lemo 1000% Overloads Without TransferAutomatic Transfers to Bypass 150%Automatic Module Off-Line Automatic Retransfers to UPSAutomatic Emergency Modules Off Maintenance Professional Start-Up Liebert Global ServicesMaintenance Agreements The Signature Program TrainingRecord Log Routine MaintenanceAir Filters Limited Life Components Battery Maintenance Battery Safety PrecautionsAvertissement Matching Battery Cabinets Optional Number of Cells Battery Voltage VDC Nominal FloatBattery voltage record Battery retorque valuesRack-Mounted Batteries Detection of Trouble Torque specifications unless otherwise labeledTorque Requirements Corrective Actions Reporting a ProblemUpstream Feeder Circuit Breaker Setting Inspections Recommended Test EquipmentRating Power factor pf KVAKVA Specifications applicable to environment Environmental ConditionsAdjustments Battery OperationElectrical Specifications Specifications 112 Page Locations
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Series 610 specifications

The Emerson Series 610 is a cutting-edge solution for precise process measurement and control, designed specifically for industries where accuracy and reliability are paramount. This advanced instrument, often utilized in oil and gas, chemical processing, and water treatment sectors, combines innovative technology with robust features to meet the demanding requirements of modern industrial applications.

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