Quarterly Maintenance - Huawei UPS5000-E-80K-LABBS User Manual

UPS5000-E-(20 kVA-80 kVA)
User Manual (Integrated UPS, 208 V)
Item
alarm
Battery
appearance
Battery
operating
temperature
Charge voltage
of battery string

7.2.3 Quarterly Maintenance

Table 7-5 Quarterly maintenance
Item
Battery temperature
sensor measurement
accuracy
Issue 04 (2020-03-12)
Expected Result
1. The surface is clean and tidy
without stains.
2. The battery terminals are
intact.
3. Batteries are free from damage
and cracks.
4. Batteries are free from acid
leakage.
5. Batteries are not deformed or
bulged.
1. The ambient battery
temperature is 25± 5° C.
2. The battery operating
temperature is lower than
battery temperature +20° C.
3. Battery charge and discharge
conditions meet the
requirements specified in the
battery specifications.
 Equalized charging voltage:
(2.35 V/cell ± 1%) x Single
battery voltage/2 x Number of
batteries in a battery string
 Float charging voltage: (2.25
V/cell ± 1%) x Single battery
voltage/2 x Number of batteries
in a battery string
Expected Result
The difference between the
temperature measured by the
temperature sensor and the
temperature displayed on the
MDU is less than 3° C.
Copyright © Huawei Technologies Co., Ltd.
7 Routine Maintenance
Troubleshooting
If the battery appearance is
abnormal, contact Huawei
technical support.
1. Identify the cause of an
abnormal battery operating
temperature.
2. If the fault persists, contact
Huawei technical support.
1. If the voltage drop between the
battery string output terminals
and the battery input terminals
at the UPS side is greater than
1% of the battery string
voltage, check whether the
cable between the battery string
and the UPS is excessively
long, or the cable diameter is
excessively small.
2. Check whether the equalized
charging voltage and float
charging voltage are correctly
set for the UPS.
3. If the fault persists, contact
Huawei technical support.
Troubleshooting
1. Install the temperature
sensor in the correct
position.
2. Replace the battery
temperature sensor.
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