Rectifying Common Faults; Ac Failure; Ac Over Volt - Huawei Telecom Power TP48200A-DX12A1 User Manual

TP48200A-DX12A1 Telecom Power
User Manual
Maintenance Check Item
Item
Preventive Indicators are normal.
maintenance
Exterior The paint or
electroplated coating
on the cabinet is intact.
Grounding The ground point
properly connects to
the equipment room
ground bar.

4.2 Rectifying Common Faults

4.2.1 AC Failure

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

4.2.2 AC Over Volt

Possible Causes


Measures
1.
2.
Issue 07 (2019-11-15)
Check Method
By observation
By observation
By observation or
by using a
screwdriver or
wrench
The AC input power cable is faulty.
The AC input circuit breaker is OFF.
The power grid is faulty.
Check whether the AC input cable is loose. If so, secure the AC input cable.
Check whether the AC input circuit breaker is OFF. If so, handle the fault which caused
the AC input circuit breaker to turn OFF and then switch on the circuit breaker.
Check whether the AC input voltage is lower than 50 V AC. If so, handle the power grid
fault.
The AC overvoltage alarm threshold is incorrectly set on the SMU.
The power grid is faulty.
Check whether the AC overvoltage alarm threshold is correctly set. If not, set the
threshold to the correct value.
Check whether the AC input voltage exceeds the AC overvoltage alarm threshold (280 V
AC by default). If so, handle the AC input fault.
Copyright © Huawei Technologies Co., Ltd.
Repair When
An alarm is generated.
The cabinet is damaged
or deformed.
The cable that connects
the ground point and the
equipment room ground
bar is loose.
4 Maintenance
Measure
Faults.
Repaint and
repair the
shell.
Secure the
ground point
or replace the
ground cable.
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