Settings - ABB REG650 Technical Manual

Section 6
Differential protection
6.3.5
Table 36: GENPDIF (87G) Group settings (basic)
Name Values (Range)
Operation Disabled
Enabled
IdMin 0.10 - 1.00
IdUnre 1.00 - 50.00
OpNegSeqDiff No
Yes
IMinNegSeq 0.02 - 0.40
116
Table 35: GENPDIF (87G) Output signals
Name Type
TRIP BOOLEAN
TRIPRES BOOLEAN
TRIPUNRE BOOLEAN
TRNSUNR BOOLEAN
TRNSSENS BOOLEAN
PICKUP BOOLEAN
BLKH BOOLEAN
OPENCT BOOLEAN
OPENCTAL BOOLEAN
IDMAG_A REAL
IDMAG_B REAL
IDMAG_C REAL
IDMAG_NS REAL
IBIAS REAL

Settings

Unit Step
- -
IB 0.01
IB 0.01
- -
IB 0.01
Description
General, common trip signal
Trip signal from restrained differential protection
Trip signal from unrestrained differential protection
Trip signal from unrestrained negative sequence
differential protection
Trip signal from sensitive negative sequence
differential protection
Common pickup signal from any phase
Common harmonic block signal
An open CT was detected
Open CT Alarm output signal. Issued after a delay ...
Fund. freq. differential current, phase A; in primary A
Fund. freq. differential current, phase B; in primary A
Fund. freq. differential current, phase C; in primary A
Negative Sequence Differential current; in primary
Amperes
Magnitude of the common Bias current; in primary
Amperes
Default Description
Disabled Operation Disable / Enable
0.25 Section 1 sensitivity, multiple of generator
rated current
10.00 Unrestr. prot. limit, multiple of generator rated
current
Yes Negative Sequence Differential Enable Off/On
0.10 Neg. sequence curr. limit, as multiple of gen.
rated curr.
1MRK 502 043-UUS B
Technical Manual