Rectifying Common Faults; Ac Failure; Ac Over Volt; Ac Under Volt - Huawei TP48200A-HX09A2 User Manual

TP48200A-HX09A2, TBC300A-TCA2 Outdoor Power
System
User Manual
Maintenance
Item

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.

4.2.3 AC Under Volt

Possible Causes


Issue 02 (2019-02-26)
Maintenance Task
Check
Whether
the equipment
room.
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.
The AC undervoltage alarm threshold is incorrectly set on the SMU.
The power grid is faulty.
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Check Repair When
Method
wrench. bar in the
equipment
room is loose or
damaged.
4 Maintenance
Measures
44