PID-7082-OUTPUTSIGNALS v1
Table 65: GENPDIF (87G) 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
START BOOLEAN Common pickup signal from any phase
STL1 BOOLEAN Pickup signal from phase A
STL2 BOOLEAN Pickup signal from phase B
STL3 BOOLEAN Pickup signal from phase C
BLKH BOOLEAN Common harmonic block signal
OPENCT BOOLEAN An open CT was detected
OPENCTAL BOOLEAN Open CT Alarm output signal. Issued after a delay ...
IDL1 REAL Instantaneous differential current A; in primary Amperes
IDL2 REAL Instantaneous differential current B; in primary Amperes
IDL3 REAL Instantaneous differential current C; in primary Amperes
IDNSMAG REAL Negative Sequence Differential current; in primary Amperes
IBIAS REAL Magnitude of the common Bias current; in primary Amperes
IDDCL1 REAL DC component of diff. current, phase L1; primary Amperes
IDDCL2 REAL DC component of diff. current, phase L2; primary Amperes
IDDCL3 REAL DC component of Diff. current, phase L3; primary Amperes
6.3.5 Settings
SEMOD172584-1 v2
PID-7082-SETTINGS v1
Table 66: GENPDIF (87G) Non group settings (basic)
Name Values (Range) Unit Step Default Description
InvertCT2Curr No
Yes
- - No Invert CT 2 curr., yes (1) or no (0). Default is
no (0).
GlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global Base Value
groups
1MRK 502 066-UUS B Section 6
Differential protection
151
Technical manual
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