Power Supply User Guide

12 User Guide APC Silcon 120-160kW 400V UPS
990-4055
Stop/Start UPS and Operating the External Service Bypass
2.6 Operating the External Service Bypass Switch (parallel systems)
2.6.1 Bypassing the Parallel UPS System (All UPSs)
Service
bypass
switch
Load
Mains
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).