American Power Conversion 480kW manual Bypassing the Parallel UPS System All UPSs

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Stop/Start UPS and Operating the External Service Bypass

2.6Operating the External Service Bypass Switch (parallel systems)

2.6.1 Bypassing the Parallel UPS System (All UPSs)

Mains

Load

Service bypass switch

APC Silcon

UPS

APC Silcon

UPS

CAUTION!

Do not leave UPS out of service for more than 48 hours. Refer to section 2.3 Stop (for complete power down).

	990-4058GB

User Guide APC Silcon 480kW 400/415V UPS	13

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Contents Copyright 2002 APC Japan 480kW 400/415V UPS User GuideThank You User Guide APC Silcon 480kW 400/415V UPSContents Introduction IntroductionDisplay Unit Stop UPS for stand-by Stop/Start UPS and Operating the External Service BypassStart UPS from stand-by Switching off the UPS Stop UPS for complete power downSystem OFF UPS start-up Start UPS from complete power downSystem start-up now completed Bypassing the Single System UPS Operating the External Service Bypass Switch single systemsStop/Start UPS and Operating the External Service Bypass System OFF Normal operation Load power 0% Bypass operation Bypassing the Parallel UPS System All UPSs Press On the keyboard until Stop/Start UPS and Operating the External Service Bypass Set input switches Q001 to position Isolating one UPS in a Parallel/Redundant System Stop/Start UPS and Operating the External Service Bypass Operation OperationKeyboard Display of Measured Values Using the Remote DisplayEconomy Mode Parameter Settings Parameter SettingsParameter Settings Programming Keys Switching to Bypass OperationProgramming Example Normal operation Alarms and Events Alarms and EventsDisplaying the Alarm Stack Mode CommentsAlarms Description Action Possible AlarmsAlarms and Events Parallel Operation Alarms Rectifying Alarm MessagesCorrection of false alarm situations during service Maintenance & Testing Maintenance & TestingBattery Monitoring Test Battery Capacity TestUntil Battery capacity Test Xxx Press Data stored Warranty WarrantyAPC Silcon UPS Limited Factory Warranty How to Contact APC How to Contact APCAPC Corporate APC Denmark