TP48200A-HT15D3 Telecom Power (Russia, Megafon)
User Manual
4 Maintenance
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
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2.
Check whether batteries are manually disconnected. If so, check with other maintenance
personnel whether the batteries can be reconnected.
3.
Check whether the battery disconnection voltage (43 V DC by default) has been set to a
very high value on the SMU. If so, adjust it to a normal value.
4.2.9 Batt Loop Trip
Possible Causes
The battery circuit breaker or fuse detection cable is loosely connected.
The battery circuit breaker has tripped or the battery fuse has blown.
The contactor is faulty.
Measures
1.
Check whether the battery circuit breaker or fuse detection cable is loosely connected. If
so, reconnect the cable.
2.
Check whether the battery circuit breaker has tripped or the battery fuse has blown. If so,
rectify the battery loop fault and then switch on the circuit breaker or replace the fuse.
3.
Manually switch on or switch off the battery contactor and check whether the battery
current changes accordingly. If not, replace the contactor.
4.2.10 High Amb. Temp.
This alarm is generated only for the power system that has an ambient temperature sensor installed.
Possible Causes
The high ambient temperature alarm threshold is incorrectly set.
The temperature control system is faulty in the cabinet where the ambient temperature
sensor is located.
The ambient temperature sensor is faulty.
Measures
1.
Check whether the high ambient temperature alarm threshold (50°C by default) is
correctly set. If no, adjust it to a proper value.
2.
Check whether the temperature control system in the cabinet is faulty. If yes, rectify the
fault. The alarm is cleared when the cabinet temperature falls within the allowed range.
3.
Check whether the ambient temperature sensor is faulty. If yes, replace the temperature
sensor.
4.2.11 Low Amb. Temp.
This alarm is generated only for the power system that has an ambient temperature sensor installed.
Possible Causes
The low ambient temperature alarm threshold is incorrectly set.