Mains pro 1.6.1 Global Guide
63
12.3.1 CommTrpPer
Common trip permanent relay; closes at any failure with delay given by appropriate parameter. Relay is in fault-
free state kept in open position and closes immediately in case of LOM protection (Vector shift or ROCOF),
External trip, incorrect phase rotation or wrong phase polarity. Relay opens in fault free state after successful
fault reset. In case of LOM protection, the delay LOM Trp Del, A.LOM Trp Del [s] (page 59) is timed out and
after this time it is possible to perform Fault reset (page 32).
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12.3.2 !CommTrpPer
Inverse common trip permanent relay; opens at any failure with delay given by appropriate parameter. Relay
opens immediately in case of LOM protection (Vector shift or ROCOF), External trip, incorrect phase rotation or
wrong phase polarity. Relay closes in fault free state after a successful fault reset. In case of LOM protection,
the delay LOM Trp Del, A.LOM Trp Del [s] (page 59) is timed out and after this time it is possible to perform
Fault reset.
6 back to Relay outputs
12.3.3 CommTrpImp
Common trip impulse relay; closes at any failure with delay given by appropriate parameter. Relay is in fault-free
state kept in open position and closes immediately in case of LOM protection (Vector shift or ROCOF), External
trip, incorrect phase rotation or wrong phase polarity. Relay opens after Imp Len [s] (page 53) has timed out,
his opening however does not mean end of trip state! Trip is terminated in fault free state after a successful fault
reset. In case of LOM protection, the delay LOM Trp Del, A.LOM Trp Del [s] (page 59) is timed out and after
this time it is possible to perform Fault reset. During trip status, the relay does not react on any new failure.
6 back to Relay outputs
12.3.4 !CommTrpImp
Inverse common trip impulse relay; opens at any failure with delay given by appropriate parameter. Relay opens
immediately in case of LOM protection (Vector shift or ROCOF), External trip, incorrect phase rotation or wrong
phase polarity. Relay closes after Basic: Imp Len has timed out, his closing however does not mean end of trip
state! Trip is terminated in fault free state after a successful fault reset. In case of LOM protection, the delay
LOM Trp Del, A.LOM Trp Del [s] (page 59) is timed out and after this time it is possible to perform Fault
reset. During trip status, the relay does not react on any new failure.
6 back to Relay outputs
12.3.5 CommSigImp
Immediate impulse signaling relay; closes immediately at any failure. Relay opens after Imp Len [s] (page 53)
since its closing. Any other detected fault-state during run of this timer has no effect. Fault reset has no
influence on this output.
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