Huawei UPS5000-E-200K-SM User Manual page 212

UPS5000-E-(200 kVA-300 kVA)
User Manual (50 kVA Power Modules)
No. Check Item
4 Battery
voltage
5 Battery string
voltage
Issue 17 (2023-07-10)
Acceptance Criteria
● Equalized charging
voltage: 2.35 V/cell
±0.02 V/cell
● Float charging voltage:
2.25 V/cell±0.02 V/cell
● Equalized charging
voltage (2.35 V/cell
±0.02 V/cell) x Voltage
of a single battery/2 x
Number of batteries in
a battery string
● Float charging voltage
(2.25 V/cell±0.02 V/
cell) x Voltage of a
single battery/2 x
Number of batteries in
a battery string
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Check Method
● Inspection method: (1)
Visual inspection. Check
the parameters
displayed on the UPS
LCD. (2) Measure.
Measure the battery
internal resistance
using an internal
resistance tester.
● Troubleshooting: Check
the equalized charging
voltage, float charging
voltage, and internal
resistance of a single
battery. If the battery
charging voltage
exceeds the threshold,
perform a complete
forced equalized
charging for the battery
string and check the
battery string voltage.
● Inspection method: (1)
Visual inspection. Check
the parameters
displayed on the UPS
LCD. (2) Measure. Use
a multimeter to
measure the output
voltage of the battery
string.
● Troubleshooting:
Correct the equalized
charging voltage and
float charging voltage
of the UPS. If the
difference between the
battery string voltage
displayed on the UPS
LCD and the measured
value is greater than
1%, contact technical
support.
6 Routine Maintenance
Check
Interval
Quarterly
Quarterly
204