Huawei Telecom Power TP48200A-DX12A1 User Manual

TP48200A-DX12A1 Telecom Power
User Manual
4 Maintenance
Issue 07 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
33
Maintenance
Item
Check Item
Check Method
Repair When
Measure
Preventive
maintenance
Indicators are normal.
By observation
An alarm is generated.
Faults.
Exterior
The paint or
electroplated coating
on the cabinet is intact.
By observation
The cabinet is damaged
or deformed.
Repaint and
repair the
shell.
Grounding
The ground point
properly connects to
the equipment room
ground bar.
By observation or
by using a
screwdriver or
wrench
The cable that connects
the ground point and the
equipment room ground
bar is loose.
Secure the
ground point
or replace the
ground cable.
4.2 Rectifying Common Faults
4.2.1 AC Failure
Possible Causes

The AC input power cable is faulty.

The AC input circuit breaker is OFF.

The power grid is faulty.
Measures
1. Check whether the AC input cable is loose. If so, secure the AC input cable.
2. 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.
3. Check whether the AC input voltage is lower than 50 V AC. If so, handle the power grid
fault.
4.2.2 AC Over Volt
Possible Causes

The AC overvoltage alarm threshold is incorrectly set on the SMU.

The power grid is faulty.
Measures
1. Check whether the AC overvoltage alarm threshold is correctly set. If not, set the
threshold to the correct value.
2. Check whether the AC input voltage exceeds the AC overvoltage alarm threshold (280 V
AC by default). If so, handle the AC input fault.

Huawei Telecom Power TP48200A-DX12A1 Specifications

General

Brand	Huawei
Model	Telecom Power TP48200A-DX12A1
Category	UPS
Language	English