6.4.3 Function block
GENPDIF
I3PNCT*
I3PTCT*
BLOCK
BLKRES
BLKUNRES
BLKNSUNR
BLKNSSEN
DESENSIT
TRIP
TRIPRES
TRIPUNRE
TRNSUNR
TRNSSENS
START
BLKH
OPENCT
OPENCTAL
IDL1MAG
IDL2MAG
IDL3MAG
IDNSMAG
IBIAS
IEC07000025_2_en.vsd
IEC07000025 V2 EN
Figure 49: GENPDIF function block
6.4.4 Signals
Table 44: GENPDIF Input signals
Name
Type Default Description
I3PNCT GROUP
SIGNAL
- Neutral side CT input
I3PTCT GROUP
SIGNAL
- Terminal side CT input
BLOCK BOOLEAN 0 Block of function
BLKRES BOOLEAN 0 Block of trip from the restrained diff. protection
BLKUNRES BOOLEAN 0 Block of trip from unrestrained diff. prot.
BLKNSUNR BOOLEAN 0 Block of trip for unrestr. neg. seq. differential
feature
BLKNSSEN BOOLEAN 0 Block of trip for sensitive neg. seq. differential
feature
DESENSIT BOOLEAN 0 Raise pick up: function temporarily desensitized
Table 45: GENPDIF 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 unrestr. neg. seq. diff. protection
TRNSSENS BOOLEAN Trip signal from sensitive neg. seq. diff. protection
START BOOLEAN Common start signal from any phase
BLKH BOOLEAN Common harmonic block signal
OPENCT BOOLEAN An open CT was detected
Table continues on next page
1MRK 502 048-UEN A Section 6
Differential protection
123
Technical manual
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