Huawei UPS5000-E Series User Manual page 185

UPS5000-E-(50 kVA-125 kVA)
User Manual (Integrated UPS 3.0)
Step 2 After the inverter shuts down, turn off UPS output circuit breaker QF3.
Step 3 Turn off the battery string switch. If there are multiple battery strings, turn off the general
switch between battery strings and the UPS and then the switch for each battery string.
Step 4 Turn off UPS input circuit breaker QF1.
Step 5 Turn off the UPS input circuit breaker (for MCCB input) or disconnect the mains from the
ATS (for ATS input).
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Issue 09 (2019-12-20)
After the inverter shuts down, if the bypass is normal, the UPS transfers to bypass
mode; if the bypass is not normal, the UPS supplies no power, and the loads shut
down.
Figure 5-19 Bypass mode
After the inverter is shut down, the Bypass mode alarm is displayed on the LCD.
Figure 5-20 Abnormal bypass
If the inverter needs to shut down to transfer the UPS to bypass mode, check that the UPS has not
generated an alarm and perform
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Step 1.
5 Operations
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