Transferring From Maintenance Bypass Mode To Normal Mode; Epo - Huawei UPS5000-E-180 kVA User Manual

UPS5000-E-180 kVA
User Manual (Integrated UPS, 30 kVA Power
Modules)
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9.3 Transferring from Maintenance Bypass Mode to
Normal Mode
Context
Before you transfer the UPS from maintenance bypass mode to normal mode,
ensure that the bypass input and output are normal.
Procedure
Step 1 Turn off the maintenance bypass switch.
Press down the maintenance bypass switch to turn it off.
The Maint. Breaker closed alarm disappears from the alarm list. Check whether
the UPS works in bypass mode by viewing the system running diagram on the
LCD.
Step 2 Start the inverters.
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9.4 EPO

● After you turn on the EPO switch (configured by users), the UPS supplies no
power, and the loads shut down.
● If the UPS is in maintenance bypass mode, the UPS still supplies power after
you press the EPO switch.
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.
Issue 05 (2024-01-30)
NO TE
After the UPS transfers to maintenance bypass mode, the Maint. breaker closed and
Bypass mode alarms are displayed on the MDU.
NO TICE
NO TICE
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