Current Phase Loss
The Current Phase Loss function only applies to three-phase TeSys avatars.
If enabled, then in the motor Start or Run state, this protection function triggers a Current Phase Loss Trip when the current phase unbalance exceeds the Current Phase Loss Trip Level, for a time longer than the Current Phase Loss Trip Delay.
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The maximum difference between any individual phase RMS current (in absolute value) and the average of the three-phase RMS currents
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Divided by the average of the three-phase RMS currents
Current Phase Loss Trip
|
I1 |
Phase 1 Current |
I2 |
Phase 2 Current |
|
I3 |
Phase 3 Current |
%Iunb |
%Current Phase Unbalance |
|
Ialarm |
Current Phase Loss Alarm Level |
Itrip |
Current Phase Loss Trip Level |
|
A |
Current Phase Loss Alarm |
B |
Current Phase Loss Trip |
|
C |
Motor Start or Run State |
T |
Current Phase Loss Trip Delay |