Identifying Component Faults; Identifying Ac Spd Faults; Identifying Circuit Breaker Faults; Identifying Rectifier Faults - Huawei TP48200A-DT19D1 Telecom Power User Manual

TP48200A-DT19D1 Telecom Power
User Manual
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4.3 Identifying Component Faults

4.3.1 Identifying AC SPD Faults

Check the color of the AC SPD indication window. Green indicates that the AC SPD is
normal. Red indicates the AC SPD is faulty.

4.3.2 Identifying Circuit Breaker Faults

The following indicate that the circuit breaker is faulty:
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4.3.3 Identifying Rectifier Faults

The following indicate that the rectifier is faulty:
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4.3.4 Identifying SMU Faults

The following indicate that the SMU is faulty:
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Issue 03 (2019-11-15)
If the DC SPD detection cable is reliably connected, replace the DC SPD.
The circuit breaker cannot be switched to ON/OFF after the short circuit fault for its end
circuit is rectified.
When the circuit breaker is switched to ON and its input voltage is normal, the voltage
between the two ends of the circuit breaker exceeds 1 V.
The input voltage is normal, but the resistance between both ends of the circuit breaker is
less than 1 kΩ when the circuit breaker is OFF.
The AC input and slot connector are normal, but the Fault indicator (red) is steady on or
all indicators are off.
The slot connector and SMU are normal, but the Alarm indicator (yellow) still blinks
after the rectifier is reinstalled.
The AC input and SMU are normal, but the SMU cannot control the rectifier.
The DC output is normal but the green indicator on the SMU is off.
The SMU breaks down or cannot be started. Its LCD has abnormal display or buttons
cannot be operated.
With alarm reporting enabled, the SMU does not report alarms when the power system is
faulty.
The SMU reports an alarm when the power system is not faulty.
The SMU fails to communicate with the connected lower-level devices even though the
communications cables are correctly connected.
Communication between the SMU and all rectifiers fails even though the rectifiers and
the communications cables are normal.
The SMU cannot monitor AC or DC power distribution when communications cables are
intact and AC and DC power distribution is normal.
Parameters cannot be set or running information cannot be viewed on the SMU.
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