P12y/EN FT/D22 Technical Guide
User Guide
Page 16/108 MiCOM P125/P126/P127
Directional overcurrent protection.
TEXT P125 P126 P127 Information
I> X Instantaneous 1st threshold phase overcurrent
tI> X Time delayed 1st threshold phase overcurrent
tIA> X Time delayed first threshold trip on phase A
tIB> X Time delayed first threshold trip on phase B
tIC> X Time delayed first threshold trip on phase C
I>> X Instantaneous 2nd threshold phase overcurrent
tI>> X Time delayed 2nd threshold phase overcurrent
I>>> X Instantaneous 3rd threshold phase overcurrent
tI>>> X Time delayed 3rd threshold phase overcurrent
Three phase overcurrent protection
TEXT P125 P126 P127 Information
I> X Instantaneous 1st threshold overcurrent
tI> X Time delayed 1st threshold overcurrent
tIA> X Time delayed first threshold trip on phase A
tIB> X Time delayed first threshold trip on phase B
tIC> X Time delayed first threshold trip on phase C
I>> X Instantaneous 2nd threshold overcurrent
tI>> X Time delayed 2nd threshold overcurrent
I>>> X Instantaneous 3rd threshold overcurrent
tI>>> X Time delayed 3rd overcurrent threshold
Directional earth fault protection
TEXT P125 P126 P127 Information
Ie> X X X Instantaneous 1st threshold earth overcurrent
tIe> X X X Time delayed 1st threshold earth overcurrent
Ie>> X X X Instantaneous 2nd threshold earth overcurrent
tIe>> X X X Time delayed 2nd threshold earth overcurrent
Ie>>> X X X Instantaneous 3rd threshold earth overcurrent
tIe>>> X X X Time delayed 3rd threshold earth overcurrent
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