TP48200A-D17A5-2 Telecom Power
User Manual
4 Maintenance
Issue 04 (2019-12-20)
Copyright © Huawei Technologies Co., Ltd.
36
No.
Maintenance Item
If...
Then...
securely connected.
3.
Replace the SMU.
2
Check the red indicator status.
Steady on:
A critical or major alarm is
generated.
The SMU is faulty.
1.
Check related components
based on alarms.
2.
Replace the SMU.
3
Check the LCD display status.
The LCD flat cable is
loose.
The SMU is faulty.
1.
Check that the LCD flat
cable is securely connected.
2.
Replace the SMU.
4
Check that the SMU can
communicate with the network
management system (NMS).
The communications cable
is loose.
Networking parameters are
not correctly set.
1.
Check that the
communications cable is
securely connected.
2.
Check that networking
parameter settings are
correct.
4.1.5 Parameters on the SMU
Table 4-5
SMU parameter maintenance
No.
Item
Possible Cause
Suggestion
1
Check whether the displayed
battery capacity and number of
battery strings are the same as
the actual data.
Parameters are set
incorrectly.
The number of batteries is
changed, or batteries are
replaced.
Set battery parameters again.
2
Check
Charge Current Limit
Coefficient
. The value is
typically
0.15C10
and
adjustable.
N/A
Change the value as required.
Otherwise, retain
0.15C10
.
3
Check whether the displayed
battery temperature is the same
as the actual temperature.
The battery temperature
sensor is faulty.
The SMU is faulty.
1.
Replace the battery
temperature sensor.
2.
Replace the SMU.
4
Check whether the displayed
total load current is the same as
the actual current measured by a
clamp meter.
The current monitoring
cable is loose.
The SMU is faulty.
1.
Check that the current
monitoring cable is securely
connected.
2.
Replace the SMU.
5
Check whether the displayed
battery charge current is the
same as the actual current
measured by a clamp meter.
The current monitoring
cable is loose.
The SMU is faulty.
1.
Check that the current
monitoring cable is securely
connected.
2.
Replace the SMU.
6
Check whether the difference
between the displayed DC
The cabinet busbar and
cables are loose or in poor
1.
Check and secure the cabinet
busbar and cable