Liebert Series 610 user manual One system in bypass to Continuous Tie operation Option

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Operating Instructions

Figure 20 One system in bypass to Continuous Tie operation (Option 1)

FROM:

One System in Bypass Mode

System 1

System 2

M1

M1

SS1

SS2

Tie Open

Tie

Load 1 Load 2

TO:

Continuous Tied Systems

TO:

Restart Bypassed System

System 1

System 2

Partial

M1

M1

SS1

SS2

M2

or full

capacity

Tie Open

Tie

Load 1 Load 2

System 1

System 2

M1

M1

SS1

SS2

M2

2

Tie Closed

Tie

Load 1 Load 2

LEGEND: Mx = Module

SSx = Static Bypass Switch

Restart the bypassed system, then use the procedures in Tying the UPS Systems - Continuous Parallel Operations (in Section 4.2.11) or see Figure 21.

Figure 21 One system in bypass to Continuous Tie operation (Option 2)

M1

FROM:

One System in Bypass Mode

System 1

System 2

M1

SS1

SS2

M1

TO:

Combined Loads Operation

System 1

System 2

M1

SS1

SS2

M2

M2

M1

Tie Open
	Tie
	Load 1	Load 2
	TO:
Continuous Tied Systems
System 1			System 2
M1	SS1	SS2	M2

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

Partial or full capacity

Tie Closed

Tie

Load 1 Load 2

LEGEND: Mx = Module

SSx = Static Bypass Switch

Combined loads on one system—See4.2.4 - Isolating a UPS System for Maintenance - Combined Loads Operation; restart bypass system. Then use Continuous Tie procedures—Tying the UPS Systems - Continuous Parallel Operations in Section 4.2.11.

Restart one system, then refer to Figure 20. Or restart both systems, then refer to Figure 15.

37

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Contents Continuous POWER-TIE Configuration Page Table of Contents Initial System Start-Up 4.2 Basic Operation Operating InstructionsInter-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 Operational Description Control System FeaturesMomentary Tie Transfer Controls Momentary Tie OperationIntersystem Synchronizing Continuous Tie Intersystem Sync and Power SharingTie System Components Continuous Tie/Transfer/Parallel ControlModes of Operation Power-Tie system one-line diagram Checking for Phase, Voltage, and Capacity Continuous Power-TieSelecting a Line Sync Source Synchronizing the UPS SystemsControl panel layout Load Transfers Between UPS Systems Separating Tied 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 What Happens If a Failure Occurs During a Power Transfer Tie Circuit Breaker or Logic FaultsRecommendations Tie Circuit Breaker Selection Hardware FailuresMimic Panel Load Transfer Controls Transfer Function Available Transfer Control DisabledTransfer Function Available OK to Transfer Load 1 to System Transfer Function Available OK to Transfer Load 2 to SystemControl Inhibits Continuous Tie ControlManual Controls Maintenance Procedures Isolating Each UPS System Normal Transfer Operation ConfigurationsInitial System Start-Up Basic OperationTransfer of Load Between Two Systems Maintenance Procedures Tie Control Logic Components Maintenance Procedures Maintaining Power-Tie ComponentsAbnormal Operations Trouble RecoveryImproper Transfer 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 Parallel Operations See 4.2.11 Tying the UPS Systems ContinuousUPS System See 4.2.3 Maintenance Procedures Isolating EachOne system in bypass to Continuous Tie operation Option Operating Instructions Page Locations Technical Support/ServiceCompany Behind the Products