ALM-5636 Input Mains Lack of Phase Alarm

Description

This alarm is reported when any phase of the three-phase AC is powered off or the AC air breaker of the corresponding phase is not closed.

Attribute

Alarm ID	Alarm Severity	Alarm Type
5636	Major	Fault

Parameters

ID	Name	Meaning
1	Site No.	Number of the site where the faulty board or module is located Value range: 0-2047
2	Board Type	Number of the type which the faulty board belongs to. 72:DPMU 133:APM/APMU
3	Board No.	Number of the fault board Value range:0-8:DPMU/APMU/APM
4	PassNo	Number of the passage where the faulty board is located.
5	SubLink No.	Alarm sub-category number 255: None
6	Cell Index	Index of the cell where the board or module is located 0-2047: Cell index of the faulty cell in the data configuration 65535: None
7	Site Type	Type of the site where the faulty board is located. 12:BTS3012; 13:BTS3006C; 14:BTS3002E; 15:BTS3012AE; 16:BTS3012 II; 17:DBS3900 GSM; 18:BTS3900 GSM; 19:BTS3900A GSM;
8	RackNo	Number of the rack where the faulty board is located.
9	BoxNo	Number of the subrack where the faulty board is located.
10	SlotNo	Number of the slot where the faulty board is located.
11	Site Name	Site Name
12	Alarm Attribute	Alarm Character 0:Normal 1:Transient Count

Impact on the System

Lack of phase in mains may cause the power module configured on the corresponding phase in the power system to stop working. Thus the power supply to the BTS may be abnormal and the services may be interrupted.

System Actions

None.

Possible Causes

One phase or two phases of the three-phase AC are powered off.
One or two AC input air breakers are off.

Procedure

Check if the AC is normal. Check if the connection of AC cables in the equipment room is faulty.
Y=> Go to step 2.

N=> The alarm is not cleared. Please contact Huawei Customer Service Center.
Perform onsite checks, and contact the power supply departments and property departments to troubleshoot the faults on the power supply network.
Y=>The alarm is cleared. The alarm handling is complete.

N=> The alarm is not cleared. Please contact Huawei Customer Service Center.