TP48200E-H12C1 (Nepal, Ncell)
User Manual
4 Maintenance
Issue 01 (2015-05-05)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
21
Measures
1.
Check whether an AC power failure occurs. If yes, resume the AC power supply.
2.
Check whether loads are manually disconnected. If yes, confirm the reason of the
manual disconnection, and reconnect the loads after the operation.
3.
Check whether the load disconnection voltage (44 V DC by default) is set too high on
the SMU. If yes, adjust it to a proper value.
4.
Check whether the power system capacity is insufficient for the loads due to rectifier
failures. If yes, replace the faulty rectifier.
5.
Check whether the load current is greater than the current power system capacity. If yes,
expand the power system capacity or reduce the load power.
4.2.9 BLVD Disconnected
Possible Causes
An AC power failure occurs.
Batteries are manually disconnected.
The battery disconnection voltage is set too high on the SMU.
Rectifiers are faulty.
The system configuration is not proper.
Measures
1.
Check whether an AC power failure occurs. If yes, resume the AC power supply.
2.
Check whether batteries are manually disconnected. If yes, confirm the reason of the
manual disconnection, and reconnect the batteries after the operation.
3.
Check whether the battery disconnection voltage (43.2 V DC by default) is set too high
on the SMU. If yes, adjust it to a proper value.
4.
Check whether the power system capacity is insufficient for the loads due to rectifier
failures. If yes, replace the faulty rectifier.
5.
Check whether the load current is greater than the current power system capacity. If yes,
expand the power system capacity or reduce the load power.
4.2.10 Battery Fuse Break
Possible Causes
The battery fuse detection cable is disconnected.
The battery circuit breaker trips or battery fuse is blown.
Measures
1.
Check whether the battery fuse detection cable is disconnected. If it is disconnected,
reconnect it.
2.
Check whether the battery circuit breaker is disconnected or the battery fuse is blown. If
the battery breaker is disconnected or the battery fuse is blown, rectify the battery loop
fault and then switch on the circuit breaker or replace the fuse.