Llvd Disconnected; Blvd Disconnected; Battery Fuse Break - Huawei TP48200A-DT19D1 Telecom Power User Manual

TP48200A-DT19D1 Telecom Power
User Manual
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4.2.8 LLVD Disconnected

Possible Causes
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Measures
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4.2.9 BLVD Disconnected

Possible Causes
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Measures
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4.2.10 Battery Fuse Break

Possible Causes
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Measures
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Issue 03 (2019-11-15)
Remove the SMU, reinstall it, and check whether the alarm is cleared. If the alarm still
exists, replace the SMU.
An AC power failure has occurred.
Loads are manually disconnected.
The load disconnection voltage has been set to a very high value on the SMU.
Check whether an AC power failure has occurred. If so, rectify the fault to restore the
AC power supply.
Check whether loads are manually disconnected. If so, check with other maintenance
personnel whether the loads can be reconnected.
Check whether the load disconnection voltage (44 V DC by default) has been set to a
very high value on the SMU. If so, adjust it to a normal value.
An AC power failure has occurred.
Batteries are manually disconnected.
The battery disconnection voltage has been set to a very high value on the SMU.
Check whether an AC power failure has occurred. If so, rectify the fault to restore the
AC power supply.
Check whether batteries are manually disconnected. If so, check with other maintenance
personnel whether the batteries can be reconnected.
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.
The battery fuse detection cable is disconnected.
The battery circuit breaker trips or battery fuse is blown.
Check whether the battery fuse detection cable is disconnected. If it is disconnected,
reconnect it.
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.
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