Huawei UPS5000-H-400K-FT Manual page 180

UPS5000-H-(400 kVA-600 kVA)-FT
User Manual (100 kVA Power Module)
Figure 5-22 Abnormal bypass
Step 2 After the inverter shuts down, turn off the downstream output switch.
Step 3 Switch off the battery string circuit breaker. If there are multiple battery strings,
switch off the general circuit breaker between battery strings and the UPS and
then switch off the circuit breaker for each battery string.
Step 4 Turn off the UPS mains input switch, bypass input switch, and output switch.
1.
2.
3.
Figure 5-23 Turning off a switch
Issue 03 (2022-11-29)
NO TE
To shut down the inverter and transfer the system to bypass mode, check that the UPS has
not generated an alarm and perform
Remove the switch handle from the tray of the front door.
Insert the switch handle in place, and then rotate the switch handle.
Pull out the switch handle and place it back on the tray of the front door.
Ensure that the triangle arrow on the flange points to OFF.
NO TE
Switches share one switch handle. Take out the handle when you operate different switches
and reinstall it after the operations are complete.
Copyright © Huawei Digital Power Technologies Co., Ltd.
5 Single UPS Commissioning
Step 1.
172