TP48200A-HT15D3 Telecom Power (Russia, Megafon)
User Manual
4 Maintenance
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
51
4.2.20 Rect Protection
Possible Causes
The rectifier input voltage is too high.
The rectifier input voltage is too low.
The ambient temperature is too high.
The rectifier is abnormal.
Measures
1.
Check whether the AC input voltage exceeds the upper threshold for rectifier working
voltage. If so, locate and rectify the power supply fault and restore the power supply.
2.
Check whether the AC input voltage is below the lower threshold for rectifier working
voltage. If so, locate and rectify the power supply fault and restore the power supply.
3.
Check whether the ambient temperature is higher than the maximum operating
temperature of the rectifier. If so, locate and rectify the temperature control system fault.
4.
Remove the rectifier that has generated the alarm and reinstall it after the indicator turns
off. If the alarm persists, replace the rectifier.
4.2.21 Rect Comm Fault
Possible Causes
A rectifier has been removed.
Rectifier connections are loose.
A rectifier is faulty.
Measures
1.
Check whether a rectifier has been removed. If so, reinstall it.
2.
If the rectifier is in position, remove the rectifier and reinstall it.
3.
If the alarm persists, replace the rectifier.
4.2.22 AC SPD Fault
Possible Causes
The AC SPD is faulty.
The AC SPD detection cable is disconnected.
Measures
1.
Check whether the AC SPD indication window is red. If so, replace the SPD.
2.
Check whether the AC SPD detection cable is disconnected. If so, reconnect the cable.