ABB Relion 670 series - Page 117

PID-6757-INPUTSIGNALS v1
Table 47: T3WPDIF (87T) Input signals
Name Type Default Description
I3PW1CT1 GROUP
SIGNAL
- Three phase winding primary CT1
I3PW1CT2 GROUP
SIGNAL
- Three phase winding primary CT2
I3PW2CT1 GROUP
SIGNAL
- Three phase winding secondary CT1
I3PW2CT2 GROUP
SIGNAL
- Three phase winding secondary CT2
I3PW3CT1 GROUP
SIGNAL
- Three phase winding tertiary CT1
I3PW3CT2 GROUP
SIGNAL
- Three phase winding tertiary CT2
TAPOLTC1 INTEGER 1 Most recent tap position reading on OLTC 1
TAPOLTC2 INTEGER 1 Most recent tap position reading on OLTC 2
OLTC1AL BOOLEAN 0 OLTC1 alarm
OLTC2AL BOOLEAN 0 OLTC2 alarm
BLOCK BOOLEAN 0 Block of function
BLKRES BOOLEAN 0 Block of trip for restrained differential feature
BLKUNRES BOOLEAN 0 Block of trip for unrestrained differential feature
BLKNSUNR BOOLEAN 0 Block of trip for unrestrained negative sequence differential
protection
BLKNSSEN BOOLEAN 0 Block of trip for sensitive negative sequence differential
protection
PID-6757-OUTPUTSIGNALS v1
Table 48: T3WPDIF (87T) Output signals
Name Type Description
TRIP BOOLEAN General, common trip signal
TRIPRES BOOLEAN Trip signal from restrained differential protection
TRIPUNRE BOOLEAN Trip signal from unrestrained differential protection
TRNSUNR BOOLEAN Trip signal from unrestrained negative sequence differential
protection
TRNSSENS BOOLEAN Trip signal from sensitive negative sequence differential
protection
PICKUP BOOLEAN Common pickup signal from any phase
PU_A BOOLEAN Pickup signal from phase A
PU_B BOOLEAN Pickup signal from phase B
PU_C BOOLEAN Pickup signal from phase C
BLK2H BOOLEAN Common second harmonic block signal from any phase
BLK2H_A BOOLEAN Second harmonic block signal, phase A
BLK2H_B BOOLEAN Second harmonic block signal, phase B
Table continues on next page
1MRK 502 066-UUS B Section 6
Differential protection
111
Technical manual