MainsPro G99TT 1.0.0 Global Guide
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12.3.6 !CommSigImp
Inverse immediate impulse signaling relay; opens immediately at any failure. The relay closes after Imp Len
[s] (page 55) since its opening. Any other detected fault-state during run of this timer has no effect. Fault
reset has no influence on this output.
6 back to Relay outputs
12.3.7 CommSigDel
Impulse signaling relay delayed; closes at any failure with a delay given by appropriate parameter. The relay
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 55) since its closing. Any other detected fault-
state during run of this timer causes a new activation of this relay or extends timing of Imp Len [s] (page 55)
by the new impulse length from the moment of the failure detection. Fault reset has no influence on this
output.
6 back to Relay outputs
12.3.8 !CommSigDel
Inverse impulse signaling relay delayed; opens at any failure with a delay given by appropriate parameter.
The relay opens immediately in case of LOM protection (Vector shift or ROCOF), External trip, incorrect
phase rotation or wrong phase polarity. Relay closes after Imp Len [s] (page 55) since its opening. Any other
detected fault-state during run of this timer causes a new activation of this relay or extends timing of Imp Len
[s] (page 55) by the new impulse length from the moment of the failure detection. Fault reset has no influence
on this output.
6 back to Relay outputs
12.3.9 U Sig
Immediate signaling relay – voltage; closes immediately in case of voltage failure (over, under voltage or
average overvoltage). The relay opens in case that all parameters are back within limits, but no sooner than
after Basic: Imp Len from its activation. If the relay is closed during trip activation, it opens no sooner than Imp
Len [s] (page 55) since trip status activation. Fault reset has no influence on this output. If any voltage
protection is disabled by setpoint (limit set to 0), the output does not signal activation of this protection stage.
6 back to Relay outputs
12.3.10 !U Sig
Inverse immediate signaling relay – voltage; opens immediately in case of voltage failure (over, under voltage
or average overvoltage). The relay closes in case that all parameters are back within limits, but no sooner
than after Imp Len [s] (page 55) from its activation. If the relay is open during trip activation, it closes no
sooner than Basic: Imp Len since trip status activation. Fault reset has no influence on this output. If any
voltage protection is disabled by setpoint (limit set to 0), the output does not signal activation of this protection
stage.
6 back to Relay outputs
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