TP48200A-HT19C3 and TP48200A-HT19C4 Telecom
Power
User Manual
4 Maintenance
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
54
3.
If the alarm persists, replace the rectifier.
4.2.22 Load Loop Break
Possible Causes
The load circuit breaker has tripped or the load fuse has blown.
The load circuit breaker or the fuse detection cable is disconnected.
Measures
1.
Check whether the load circuit breaker has tripped or the load fuse has blown. If so,
locate and rectify the circuit fault, and then switch on the circuit breaker or replace the
fuse.
2.
Check whether the load circuit breaker or fuse detection cable is disconnected. If so,
reconnect it.
4.2.23 AC SPD Fault
Possible Causes
The AC SPD is faulty.
The AC SPD detection cable is disconnected.
Measures
1.
Check whether the AC SPD indication window is red. If so, replace the SPD.
2.
Check whether the AC SPD detection cable is disconnected. If so, reconnect the cable.
4.2.24 DC SPD Fault
Possible Causes
The DC SPD detection cable is disconnected.
The DC SPD is faulty.
Measures
1.
Check whether the DC SPD detection cable is disconnected. If so, reconnect the cable.
2.
If the DC SPD detection cable is reliably connected, replace the DC SPD.
4.3 Identifying Component Faults
4.3.1 Identifying AC SPD Faults
Check the color of the AC SPD indication window. Green indicates that the AC SPD is
normal. Red indicates the AC SPD is faulty.