6.1.2.5
Monitored data
Table 28:
T2WPDIF Monitored data
Name
Type
Values (Range)
Unit
Description
IDL1MAG
REAL
-
A
Magnitude of
fundamental frequency
differential current, phase
L1
IDL2MAG
REAL
-
A
Magnitude of
fundamental frequency
differential current, phase
L2
IDL3MAG
REAL
-
A
Magnitude of
fundamental frequency
differential current, phase
L3
IBIAS
REAL
-
A
Magnitude of the bias
current, which is common
to all phases
IDNSMAG
REAL
-
A
Magnitude of the
negative sequence
differential current
6.1.3
Transformer differential protection, three winding T3WPDIF
6.1.3.1
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
6.1.3.2
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 31:
T3WPDIF function block
1MRK 504 135-UEN A
Section 6
Differential protection
83
Technical manual
Summary of Contents for ret650
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