American Power Conversion 240-320kW 480V Bypassing the Parallel UPS System All UPSs, Dual Utility

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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)

Single Utility

Utility

Dual Utility

H003

Load

Utility 2

Load

Service bypass switch

APC Silcon

UPS

APC Silcon

UPS

		Q003
		Service
		bypass
		switch
	H010a
Utility 1	Q010a	APC Silcon
Utility 1		UPS
	Q001a	UPS
	Q001a
	H010b
	Q010b	APC Silcon
	Q001b	UPS
	Q001b

Q004

H002a

Q002a

H002b

Q002b

H004

CAUTION!

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

	990-4039

12	User Guide APC Silcon 240-320kW 480V UPS

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Contents APC Silcon 240-320kW 480V UPS User Guide Copyright 2000 APC Denmark ApSSafety Symbols used in this manual User Guide APC Silcon 240-320kW 480V UPSThank You Contents Introduction IntroductionDisplay Unit Stop/Start UPS and Operating the External Service Bypass Stop UPS for stand-byStart UPS from stand-by Stop UPS for complete power down Switching off the UPSAcoustic alarm sounds Reset the acoustic alarm by pressingStart UPS from complete power down UPS Start-upClose the front doors Operating the External Service Bypass Switch single systems Service Bypass Switch APC Silcon System OFF Normal operation Load power 0% Bypassing the Parallel UPS System All UPSs Dual UtilityLamp indication on Bypass Panel Stop/Start UPS and Operating the External Service Bypass Press On the keyboard Following can be carried out on any UPSIsolating one UPS in a Parallel/Redundant System Stop/Start UPS and Operating the External Service Bypass Operation OperationKeyboard Display of Measured Values Batt. load Batt. tankUsing the Remote Display Economy ModeParameter Settings Parameter SettingsParameter Settings Parameter Setting CommentsSwitching to Bypass Operation Programming KeysProgramming Example Load power xx% Alarms and Events Alarms and EventsDisplaying the Alarm Stack Displaying the Event StackPossible alarms Alarms Description ActionDisplay will show invalid UPS data Rectifying Alarm Messages Parallel Operation AlarmsCorrection of false alarm situations during service Maintenance & Testing Maintenance & TestingBattery Monitoring Test Battery Capacity TestUntil Warranty WarrantyAPC Silcon UPS Limited Factory Warranty How to Contact APC How to Contact APCAPC Corporate APC Denmark