Phasak PH 9273 Manual De Uso página 75

3. Operations
EN
Method 2:
1) If the bypass is abnormal, you cannot remove the UPS without interruption. You must cut off load and shut down the
system.
2) Make sure that bypass setting is enabled in each UPS and then turn off the running system. All UPSs will transfer to
bypass mode. Remove all the maintenance bypass covers and set the maintenance switches from "UPS" to "BPS".
Turn off all the input breakers and battery breakers in parallel system.
3) Turn off the output breaker and remove the parallel cable and share current cable from the UPSs that you want to
remove. Then, remove UPSs from the parallel system.
4) Turn on the input breaker of the remaining UPSs and the system will transfer to bypass mode. Set the maintenance
switches from "BPS" to "UPS and put the maintenance bypass covers back.
5) Turn on the remaining UPSs by following section 3.5.(1)
WARNINGS (Only for the parallel system):
• Before turning on the parallel system to activate inverter, make sure that all unit's maintenance switch at the same position.
• When parallel system is turned on to work through inverter, please do not operate the maintenance switch of any unit.
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PH 9273 | PH 9293
Uninterruptable Power Supply
Segurança e harmonia
ININTERRUPTA