Maintenance Bypass Load Transfers | Liebert Series 600T guide

Maintenance Bypass Load Transfers

To manually transfer the load between Maintenance Bypass and the UPS system bypass line, carefully follow these instructions. Do not transfer the load between Maintenance Bypass and the UPS system (module inverters) output. Use the SCC Monitor/Mimic Display screen to verify the UPS system bypass line is available.

CAUTION

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.

If the load is on the UPS System Bypass:

a.Close the Maintenance Bypass Breaker (MBB).

b.Verify closure of the MBB. Then open the Maintenance Isolation Breaker (MIB). Load is now on

Maintenance Bypass.

c.If UPS bypass shutdown is required, open the Bypass Input Breaker (BIB).

If the load is on Maintenance Bypass:

a.Close the Bypass Input Breaker (BIB) or verify BIB is closed. Note that UPS System Bypass circuit breaker (motorized) must also be closed.

b.Close the Maintenance Isolation Breaker (MIB).

c.Verify closure of the MIB. Then open the Maintenance Bypass Breaker (MBB). Load is now on UPS

System Bypass.

98	Operation	DISCONTINUED
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Liebert Series 600T manual Maintenance Bypass Load Transfers, If the load is on Maintenance Bypass, System Bypass

Contents

Series 600T UPS DIS Product Table of Contents Manual Procedures Figures Tables Important Safety Instructions Overview of this Manual System Description Multi-Module UPS, 65-80 kVA left and 100-500 kVA right Product Multi-Module 500-750 kVA UPS Types of System Control Cabinets SCCs System Control Cabinets SCCs Other Factors to Consider ReliabilityDesigned for Success Safety Precautions Modes of Operation Operator Controls DIS Product Options General Component Descriptions System Control Cabinet Battery Plant UPS Module Detailed Component Descriptions Controls HardwareFirmware Rectifier/Charger Input Power Factor Battery Charging CircuitInput Circuit Breaker Isolation Transformer Battery Disconnect Battery Charge Current LimitingBattery Equalize Charge Circuit Operation After End-of-Discharge Non-Linear Load Characteristics Unbalanced Load CharacteristicsInverter Output Regulation and Overload Performance Static Switch Isolation Static BypassFuse Protection Shorted SCR Monitoring Pulsed Parallel Operation Load Transfers Transfer and Retransfer Conditions Automatic Transfers to BypassManual Transfers Transfer Inhibited Retransfer Inhibited Redundant ModeManual Retransfers Features Display Screen and Operator Controls Description Function System Control Cabinet Operator Controls Sccb Pictured Shutdown Procedures Description Location Function Switches Behind SCC Control Panel Door Menu Tree Master Menu Screen WALK-IN Display modules only Customer Alarm Definitions SCC only Load Transfer Procedures SCC onlyBattery Time modules only Output Metering Displays Monitor/Mimic Display ScreenInput Metering Displays Status/Alarm Message Areas Item 7 Alarm MessagesItem 5 Module Status Messages Item 6 System Status Messages Module Monitor/Mimic Display Screen Alarm Messages Item 5 Alarm Messages MOD 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 Walk-In Display Screen During Start-Up Status Reports Screens Status Reports Screen Present Status Select Exit Event History Event History MODULE-0 History Status History Status Report Screens SCC Module Battery Cycle Monitor Module Only System Status Battery Cycle Monitoring Summary Screen System Configuration Screens System Configuration Date Date Screen Time Time Screen Auto Dial Dial Modem Baud Rate Modem Baud Rate Maximum Auto-Retransfer Attempts Retransfer Attempts Remote Monitor Alarm Limit Settings Screen Alarm Settings Product Load Transfer Procedures Screen Refer to 3.3.2 Load Transfer Procedures for more details Start-Up Procedures Screen Refer to 3.3.1 Start-Up Procedure for more details Module Start- Up Procedures Screen Shutdown Procedures Screen Shutdown Procedures Module Shutdown Procedures Screen Battery Time Screen Module Only VDC Battery Time Screen Example 45 Minute Discharge Range of Values for Calculated Battery Times Aining Rem Tim Calculated La p s e d T im e M in u te s Meter Calibration Screen UP Cursor UP Down Cursor Down Select Choose Battery Equalize Screen Battery Equalize Recharging Alarm and Status Messages Module Status Messages 3 Modules Connected System Status Messages Load Block Messages Abbreviations Used in Alarm Messages OF/UF DC Ground Fault Battery CB OpenPower Battery Manual Reset Static SwitchBypass Phase Control Power Alarm Indications and Other Alarms That Activate Summary AlarmsSystem Configuration Screens or the watchdog timer has Reverse Power Temperature Over-TemperatureTimeout System Configuration Screens Load On UPS Alarm Message Special Functions Communication Interfaces Worldwide ReportingAuto-Dial Requesting Information Local Reporting to a Terminal Local Reporting to a MonitorSite Reporting SiteScan or Snmp Remote Monitor Panel Separate / Simultaneous Outputs Load On Bypass Scct OK To Transfer Load on Bypass UPS Available Load on UPS Bypass Available Momentary Overloads Refer to 3.4 Automatic Operations Input Power Failure Load On Battery Input Power Fail Load on Battery One Module Off-Line One Module Off-Line Load on UPS Off Battery Load on UPS Battery Not Available Refer to 3.3.3 Shutdown Procedures Emergency Modules Off Emergency Power Off Emergency Power Off Refer to 3.2.10 Maintenance Bypass System Shutdown Load on Maintenance Bypass Two Breakers Load on Maintenance Bypass Three Breakers Manual Procedures Refer to 3.4 Automatic Operations for more details Start-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 Load Transfers Maintenance BypassIf the load is on Maintenance Bypass System Bypass Shutdown Procedures System Shutdown Procedure UPS bypass line is still energized 100 Module Shutdown Procedure Remote Emergency Power Off Repo Local Emergency Modules Off Lemo Automatic Operations Overloads Without Transfer Automatic Transfers to Bypass Automatic Retransfers to UPS Automatic Module Off-Line Automatic Emergency Modules Off Maintenance DIS Product Liebert Global Services Maintenance Agreements The Signature ProgramProfessional Start-Up Training Air Filters Routine MaintenanceRecord Log Battery Maintenance Battery Safety Precautions DIS Product 112 DIS Product Matching Battery Cabinets Optional Power BatteriesRack-Mounted Batteries Torque Requirements Torque Specifications Unless Otherwise Labeled Detection of Trouble Recommended Test Equipment Reporting a ProblemCorrective Actions Rating Environmental Conditions Adjustments Battery Operation Electrical Specifications Voltage Adjustment Range Phase BalancingVoltage Transient Recovery Time Voltage Harmonic Content Series 600T UPS