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UPS5000-A-(400 kVA-500 kVA)
User Manual (40 kVA Power Modules)
Commission the voltages on other power units one by one.
Step 7 Verify that the number of battery strings is consistent with the result calculated based on the
number of cells displayed on the LCD. Each cell is 2 V. For example, if a battery provides a
voltage of 12 V, it is regarded as six cells. If each battery provides a voltage of 2 V, the
number of cells is the same as the number of batteries. Use a multimeter to check that the sum
of the absolute voltages of positive and negative battery strings are greater than a certain value
(2 x Number of cells) to ensure that the battery strings are connected properly. If multiple
battery strings are available, close the circuit breaker of each battery string and then close the
main circuit breaker between the battery strings and the UPS.
Number of cells indicates the number of 2 V cells connected to the UPS. Number of cells
affects the charge voltage and discharge time. Incorrect setting will cause a high or low charge
voltage, which greatly shortens the battery lifespan. In addition, the UPS may shut down
before the discharging is completed, which may result in data backup failure. The
1lists examples of setting battery parameters.
Table 5-1 Battery parameter settings
Battery
Specifications
150 Ah/12 V
Issue 06 (2020-01-10)
Figure 5-15 Commissioning the voltages (power unit 1 used as an example)
Number of
Batteries
36 batteries in
Copyright © Huawei Technologies Co., Ltd.
Number of
Number of
Battery
Cells
Strings
Two battery
36 x 6 = 216
5 Operation Guide
Table 5-
Battery
Capacity
150 Ah + 150
155
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