UPS5000-H-1200 kVA
User Manual (100 kVA Power Modules)
5 Operations
Issue 01 (2020-07-15)
Copyright © Huawei Technologies Co., Ltd.
141
Figure 5-6
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 upstream mains and bypass input switches.
----End
5.3 Cold-Starting the UPS Using Batteries
Lead-Acid Battery Cold Start
Step 1
Check that batteries are properly connected. Use a multimeter to measure the voltage of each
battery string. The value should be greater than the specified value (Voltage of a single
battery x Number of batteries in the battery string).
Step 2
Turn off the mains and bypass input switches in the external input PDC, and switch on the
battery circuit breaker. If there are multiple battery strings, switch on the circuit breaker for
each battery string and then the general circuit breaker between the battery strings and the
UPS.
Step 3
Use a multimeter to measure the voltage of each battery string connected to the UPS. If the
voltage is greater than the specified value (Voltage of a single battery x Number of batteries
in the battery string), batteries are connected properly.
Step 4
Press and hold down the
BATT START
button on the bypass control module for more than 2
seconds. The system automatically enters the battery cold start state. The MDU displays the
Huawei logo and an initialization progress bar.
Step 5
After the initialization is complete, start the inverter on the LCD.
----End
Lithium Battery Cold Start
Step 1
Check that the cables between the UPS and the lithium battery cabinet are properly connected.
