Rectifying Common Faults; Ac Failure; Ac Over Volt - Huawei Telecom Power TP48120A-HD15A1 User Manual

TP48120A-HD15A1, TP48120A-HD15A2,
TP48200A-HD15A1, and TP48200A-HD15A2 Telecom
Power
User Manual
Maintenance Check Whether
Item
Preventive Indicators are normal.
maintenance
inspection (PMI)
Appearance The paint or
electroplated coating
on the cabinet flakes
off or has scratches.
Grounding The ground point
properly connects to
the ground bar in the
equipment room.

4.2 Rectifying Common Faults

4.2.1 AC Failure

Possible Causes



Measures
1.
2.
3.

4.2.2 AC Over Volt

Possible Causes


Issue 03 (2020-01-04)
Check Method
By observing.
By observing.
By observing the
grounding and
using a screwdriver
or wrench.
The AC input power cable is faulty.
The AC input circuit breaker is OFF.
The mains grid is faulty.
Check whether the AC input cable is loose. If yes, secure the AC input cable.
Check whether the AC input circuit breaker is OFF. If yes, handle the back-end circuit
failure and then switch on the circuit breaker.
Check whether the AC input voltage is lower than 50 V AC. If yes, handle the mains
grid fault.
The AC overvoltage alarm threshold is not set properly on the SMU.
The power grid is faulty.
Copyright © Huawei Technologies Co., Ltd.
Repair When Measures
Common
circuit voltage
exceeds its
threshold.
An alarm is
generated.
The surface is Repaint or repair
damaged or the shell.
distorted.
The cable Secure the ground
connecting the point or replace the
ground point and cable.
the ground bar in
the equipment room
is loose or
damaged.
4 Maintenance
Faults.
40