ABB Relion 670 Series Technical Reference Manual page 152

Section 5
Differential protection
146
Name Type
IDMAG_A REAL
IDMAG_B REAL
IDMAG_C REAL
IBIAS REAL
IDMAG_NS REAL
Table 62: L6CPDIF (87L) Input signals
Name Type
I3P1 GROUP
SIGNAL
I3P2 GROUP
SIGNAL
I3P3 GROUP
SIGNAL
I3P4 GROUP
SIGNAL
I3P5 GROUP
SIGNAL
I3P6 GROUP
SIGNAL
Table 63: L6CPDIF (87L) Output signals
Name Type
TRIP BOOLEAN
TR_A BOOLEAN
TR_B BOOLEAN
TR_C BOOLEAN
TRIPRES BOOLEAN
TRIPUNRE BOOLEAN
TRIPENHA BOOLEAN
PICKUP BOOLEAN
PU_A BOOLEAN
PU_B BOOLEAN
PU_C BOOLEAN
BLK2H BOOLEAN
BLK2H_A BOOLEAN
BLK2H_B BOOLEAN
Table continues on next page
Description
Magnitude of fund. freq. differential current, phase A
Magnitude of fund. freq. differential current, phase B
Magnitude of fund. freq. differential current, phase C
Magnitude of the bias current, common for phase A,B.C
Magnitude of the negative sequence differential current
Default Description
- Three phase current grp1 samples and DFT values
- Three phase current grp1 samples and DFT values
- Three phase current grp1 samples and DFT values
- Three phase current grp1 samples and DFT values
- Three phase current grp1 samples and DFT values
- Three phase current grp1 samples and DFT values
Description
Main Trip Signal
Trip signal from phase A
Trip signal from phase B
Trip signal from phase C
Trip by restrained differential 87L
Trip by unrestrained differential 87H
Trip by Enhanced restrainted differential 87LEnhanced
Main Pickup output signal
Pickup signal from phase A
Pickup signal from phase B
Pickup signal from phase C
Block signal due to second harmonic
Block signal due to second harmonic phase A
Block signal due to second harmonic phase B
1MRK505222-UUS C
Technical reference manual