Faq; Cold-Starting The Ups Using Batteries - Huawei UPS5000-H-400K-FT Manual

UPS5000-H-(400 kVA-600 kVA)-FT
User Manual (100 kVA Power Module)

9.1 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 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.
Step 2 Turn off the mains and bypass input switches in the external input PDC.
Step 3 Power on the lithium battery cabinet by referring to the lithium battery cabinet
manual.
Step 4 Use a multimeter to measure the voltages of the positive and negative battery
strings connected to the UPS battery input terminals. If the measured values are
Issue 03 (2022-11-29) Copyright © Huawei Digital Power Technologies Co., Ltd.

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