Liebert Series 610 See 4.2.4 Isolating a UPS System for Maintenance, Combined Loads Operation

Page 38

			Operating Instructions
Figure 12 Transfer both load feeders to one UPS
	FROM:		TO:
Normal Operation		Combined Loads Operation
System 1	System 2	System 1	System 2

M1

M1

SS1

SS2

M2

M2

M1

M1

SS1

SS2

M2

M2

Tie Open		Momentary Tie		Tie Closed
Tie Open		for transfer of		Tie Closed
Tie		Load 2 to	Tie
Load 1	Load 2	System 1	Load 1	Load 2

See 4.2.4 - Isolating a UPS System for Maintenance -	LEGEND: Mx =	Module
Combined Loads Operation.	SSx =	Static Bypass Switch

Figure 13 Both feeders on one system to normal operation

M1

FROM:

Combined Loads Operation

System 1

System 2

M1

SS1

SS2

M2

M2

M1

TO:

Normal Operation

System 1

System 2

M1

SS1

SS2

M2

M2

	Tie Closed	Tie Open
Tie		Tie
Load 1	Load 2	Load 1	Load 2

See 4.2.6 - Returning an Isolated System to Normal	LEGEND: Mx =	Module
Operation - End Combined Loads Operation.	SSx =	Static Bypass Switch

Figure 14 Transfer 100% load on one system to 100% load on a second system (a two-step operation)

FROM:

Combined Loads Operation on System 1

System 1

System 2

M1

M1

SS1

SS2

M2

M2

TO:

Combined Loads Operation on System 2

System 1

System 2

M1

M1

SS1

SS2

M2

M2

Tie Closed

Tie

Load 1 Load 2

Momentary Tie for transfer of Load 2 to System 2, then Momentary Tie for transfer of Load 1 to System 2

Tie Closed

Tie

Load 1 Load 2

See 4.2.5 - Transfer of Load Between Two Systems.	LEGEND: Mx =	Module
	SSx =	Static Bypass Switch

34

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Contents Continuous POWER-TIE Configuration Page Table of Contents Operating Instructions Initial System Start-Up 4.2 Basic OperationInter-System Isolation and Reliability FunctionSystem Flexibility Basic Dual-Bus Power-Tie one-line diagram Power-Tie systems fault isolation issues Power-Tie systems control interface diagram Control System Features Operational DescriptionMomentary Tie Transfer Controls Momentary Tie OperationIntersystem Synchronizing Intersystem Sync and Power Sharing Continuous TieContinuous Tie/Transfer/Parallel Control Tie System ComponentsModes of Operation Power-Tie system one-line diagram Selecting a Line Sync Source Continuous Power-TieChecking for Phase, Voltage, and Capacity Synchronizing the UPS SystemsControl panel layout Separating Tied Systems Load Transfers Between UPS SystemsDesign Criteria Combined Loads on One System from Continuous Tie OperationCombined Loads on One System to Continuous Tie Operation Line Sync Signal Power-Tie system fault isolation issues Power-Tie systems fault tolerance Tie Operation Improper User OperationTransfer Operation Recommendations Tie Circuit Breaker Selection Tie Circuit Breaker or Logic FaultsWhat Happens If a Failure Occurs During a Power Transfer Hardware FailuresMimic Panel Load Transfer Controls Transfer Function Available OK to Transfer Load 1 to System Transfer Control DisabledTransfer Function Available Transfer Function Available OK to Transfer Load 2 to SystemContinuous Tie Control Control InhibitsManual Controls Initial System Start-Up Normal Transfer Operation ConfigurationsMaintenance Procedures Isolating Each UPS System Basic OperationTransfer of Load Between Two Systems Maintenance Procedures Maintaining Power-Tie Components Maintenance Procedures Tie Control Logic ComponentsImproper Transfer Trouble RecoveryAbnormal Operations Circuit Breaker FailureTying the UPS Systems Continuous Parallel Operations Normal Operating ConfigurationContinuous Tie-Systems Abnormal Operations Isolation for Maintenance Power-Tie system one-line diagram Operation Scenarios/Transfer Procedures See 4.2.5 Transfer of Load Between Two Systems See 4.2.4 Isolating a UPS System for MaintenanceCombined Loads Operation See 4.2.11 Tying the UPS Systems Continuous Parallel OperationsSee 4.2.3 Maintenance Procedures Isolating Each UPS SystemOne system in bypass to Continuous Tie operation Option Operating Instructions Page Locations Technical Support/ServiceCompany Behind the Products