SEMOD54551-4 v5
ANSI06000250-2-en.vsd
T3WPDIF (87T)
I3PW1CT1*
I3PW1CT2*
I3PW2CT1*
I3PW2CT2*
I3PW3CT1*
I3PW3CT2*
TAPOLTC1
TAPOLTC2
OLTC1AL
OLTC2AL
BLOCK
BLKRES
BLKUNRES
BLKNSUNR
BLKNSSEN
TRIP
TRIPRES
TRIPUNRE
TRNSUNR
TRNSSENS
PICKUP
PU_A
PU_B
PU_C
BLK2H
BLK2H_A
BLK2H_B
BLK2H_C
BLK5H
BLK5H_A
BLK5H_B
BLK5H_C
BLKWAV
BLKWAV_A
BLKWAV_B
BLKWAV_C
IDALARM
OPENCT
OPENCTAL
ID_A
ID_B
ID_C
IDMAG_A
IDMAG_B
IDMAG_C
IBIAS
IDMAG_NS
ANSI06000250 V2 EN-US
Figure 34: T3WPDIF (87T) function block
6.1.4 Signals
PID-6623-INPUTSIGNALS v2
Table 45: T2WPDIF (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
TAPOLTC1 INTEGER 1 Most recent tap position reading on OLTC 1
OLTC1AL BOOLEAN 0 OLTC1 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
1MRK 502 066-UUS B Section 6
Differential protection
109
Technical manual