UPS5000-E-(360 kVA-480 kVA)
User Manual (40 kVA Power Modules)
5 Operations
Issue 07 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
160
Figure 5-16
Commissioning the voltages
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.
Table 5-1
Battery parameter settings
Battery
Specifications
Number of
Batteries
Number of Battery
Strings
Number of
Cells
Battery Capacity
150 Ah/12 V
36 batteries in
series
Two battery strings
connected in parallel
36 x 6 = 216
150 Ah + 150 Ah
= 300 Ah
300 Ah/2 V
192 batteries in
Two battery strings
192 x 1 = 192
300 Ah + 300 Ah
