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MiCOM P632
Fault Data Acquisition Time
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MiCOM P632
Fault Data Acquisition Time
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The P632 determines the measured fault data for a particular point in time during a fault. Depending on the protection function that recognizes a fault, the criterion for the determination of the recording start time is selected by the P632. If, for example, the differential protection function detects a fault then the P632 determines the measured fault data at the time during the fault when the maximum differential current was measured. The measured fault data are displayed at the end of the fault. If several protection functions detect a fault then the criterion is selected on the basis of the priorities given in the table below. The selected criterion is displayed at the P632.
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Priority |
Function Recognizing the Fault |
Acquisition Time Criterion |
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1 |
Differential protection function |
Maximum differential current |
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2 |
Ground differential protection, end a (Br: Restricted earth fault protection, end a) |
Maximum differential current (REF_1) |
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3 |
Ground differential protection, end b (Br: Restricted earth fault protection, end b) |
Maximum differential current (REF_2) |
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4 |
Definite-time overcurrent protection or inverse-time overcurrent protection |
Maximum restraining current |
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5 |
Functions according to the selection through m out of n parameters |
End of fault |
The difference in time between the start of the fault and the fault data acquisition time is determined by the P632 and displayed.
