Fault Handling And Troubleshooting; Fault Handling; Type Of Faults; Fault Handling And Fault Clearance Procedure - ABB PQFA Instruction Manual

11.Fault handling and troubleshooting

11.1. Fault handling

11.1.1.

Type of faults

Faults are classified into two basic families:
? ?
Minor faults
? ?
Critical faults
Immediately after the fault occurrence, the error is cleared. If it has
disappeared, the fault is said minor. In the other case, the fault is considered
as critical.
11.1.2.

Fault handling and fault clearance procedure

After the occurrence of a fault, the IGBT' s are stopped and the filter
determines the type of fault it is facing.
If it is not critical, the IGBT' s are restarted and the filter is back to normal
operation.
If the fault is critical, it is memorised and the filter conducts a fault clearance
procedure.
Fault handling procedure:
Start IGBT
Normal
operation
Stop IGBT
N
Critical fault?
Asea Brown Boveri Jumet S.A.
PQFA Instructions Manual
Fault occurrence
Y
Memorise fault
Fault clearance
procedure
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