Huawei Telecom Power TP48120A-HD15A1 User Manual

TP48120A-HD15A1, TP48120A-HD15A2,
TP48200A-HD15A1, and TP48200A-HD15A2 Telecom
Power
User Manual
4 Maintenance
Issue 03 (2020-01-04)
Copyright © Huawei Technologies Co., Ltd.
42
2. Check whether the DC undervoltage alarm threshold (45 V DC by default) is properly
set. If no, adjust it to a proper value.
3. 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. Check whether the system voltage is set too low in manual mode. If yes, confirm the
reason and adjust the voltage to a proper value after the operation.
5. Check whether the power system capacity is insufficient for the loads due to rectifier
failures. If yes, replace the faulty rectifier.
4.2.6 Batt Chg. Overcur.
Possible Causes

The rectifier communication is interrupted.

Poor contact of the SMU.

The SMU is faulty.
Measures
1. Check whether an alarm is generated for rectifier communication interruption. If yes,
remove the rectifier and reinstall it to check whether the alarm is cleared. If the alarm
still exists, replace the rectifier.
2. Remove the SMU and reinstall it to check whether the alarm is cleared. If the alarm still
exists, replace the SMU.
4.2.7 LLVD Disconnected
Possible Causes

An AC power failure occurs.

Loads are manually disconnected.

The load 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 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.

Huawei Telecom Power TP48120A-HD15A1 Specifications

General

Brand	Huawei
Model	Telecom Power TP48120A-HD15A1
Category	Network Hardware
Language	English