Performing Epo - Huawei UPS5000-A-400 kVA User Manual

UPS5000-A-400 kVA
User Manual (50 kVA, PF=0.9)
Procedure
Step 1 Turn off the maintenance bypass switch.
Turn the maintenance bypass circuit breaker from the ON position to the OFF position. The
maintenance bypass circuit breaker is open, and the Maint. breaker closed alarm is cleared
from the MDU. Check whether the system is operating in bypass mode by viewing the system
operating status on the LCD or WebUI.
Figure 5-34 Turning off the maintenance bypass switch (UPS in full configurations)
Step 2 Start the inverter.
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5.9 Performing EPO

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Press the external EPO switch that connects to the dry contact card or remove the 4-pin
terminal on the EPO port of the dry contact card of the bypass unit.
Issue 03 (2020-01-10)
After the EPO button is turned on, the UPS supplies no power and the loads shut down.
In maintenance bypass mode, the UPS continues to supply power even after the EPO
button is turned on.
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5 Operation Guide
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