ABB REG650 - Transformer Differential Protection, Three Winding T3 WPDIF; Function Block; Identification; Signals

Included is an innovative sensitive differential protection element based on the theory
of symmetrical components. This element offers the best possible coverage of power
transformer windings turn to turn faults.
6.1.2 Transformer differential protection, three winding T3WPDIF
6.1.2.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Transformer differential protection,
three-winding
T3WPDIF
3Id/I
SYMBOL-BB V1 EN
87T
6.1.2.2 Function block
T3WPDIF
I3PW1CT1*
I3PW2CT1*
I3PW3CT1*
BLOCK
TRIP
TRIPRES
TRIPUNRE
TRNSUNR
TRNSSENS
START
STL1
STL2
STL3
BLK2H
BLK5H
BLKWAV
IDALARM
IDL1MAG
IDL2MAG
IDL3MAG
IBIAS
IDNSMAG
IEC09000269_1_en.vsd
IEC09000269 V1 EN
Figure 30: T3WPDIF function block
6.1.2.3 Signals
Table 24: T3WPDIF Input signals
Name
Type Default Description
I3PW1CT1 GROUP
SIGNAL
- Three phase current connection winding 1 (W1)
CT1
I3PW2CT1 GROUP
SIGNAL
- Three phase current connection winding 2 (W2)
CT1
I3PW3CT1 GROUP
SIGNAL
- Three phase current connection winding 3 (W3)
CT1
BLOCK BOOLEAN 0 Block of function
Section 6 1MRK 502 048-UEN A
Differential protection
82
Technical manual