Protective Elements
Phase Current Differential Protection Module Input States
Name Description Assignment via
ExBlo1-I Module input state: External blocking1 [Protection Para
/Global Prot Para
/Diff-Prot
/Id]
ExBlo2-I Module input state: External blocking2 [Protection Para
/Global Prot Para
/Diff-Prot
/Id]
ExBlo TripCmd-I Module input state: External Blocking of the Trip
Command
[Protection Para
/Global Prot Para
/Diff-Prot
/Id]
Phase Current Differential Protection Module Signals (Output States)
Signal Description
active Signal: active
ExBlo Signal: External Blocking
Blo TripCmd Signal: Trip Command blocked
ExBlo TripCmd Signal: External Blocking of the Trip Command
Alarm L1 Signal: Alarm System Phase L1
Alarm L2 Signal: Alarm System Phase L2
Alarm L3 Signal: Alarm System L3
Alarm Signal: Alarm
Trip L1 Signal: Trip System Phase L1
Trip L2 Signal: Trip System Phase L2
Trip L3 Signal: Trip System Phase L3
Trip Signal: Trip
TripCmd Signal: Trip Command
Blo H2 Signal: Blocked by Harmonic:2
Blo H4 Signal: Blocked by Harmonic:4
Blo H5 Signal: Blocked by Harmonic:5
H2,H4,H5 Blo Signal: Blocked by Harmonics (Inhibit)
Slope Blo Signal: Differential protection was blocked by current transformer
saturation. The tripping characteristic was lifted because of current
transformer saturation.
Transient Signal: Temporary stabilization of the differential protection afterwards the
transformer is being engergized.
Restraining Signal: Restraining of the differential protection by means of rising the
tripping curve.
652 MCDGV4 DOK-HB-MCDGV4-2E
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