ABB REG670 - Settings

Table 55: 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
STL1 BOOLEAN Start signal from phase L1
STL2 BOOLEAN Start signal from phase L2
STL3 BOOLEAN Start signal from phase L3
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 L1; in primary
Amperes
IDL2 REAL Instantaneous differential current L2; in primary
Amperes
IDL3 REAL Instantaneous differential current L3; in primary
Amperes
IDNSMAG REAL Negative Sequence Differential current; in primary
Amperes
IBIAS REAL Magnitude of the common Bias current; in primary
Amperes
6.3.5 Settings
Table 56: GENPDIF Group settings (basic)
Name
Values (Range) Unit Step Default Description
Operation Off
On
- - Off Operation Off / On
IdMin 0.05 - 1.00 IB 0.01 0.25 Section 1 sensitivity, multiple of generator
rated current
IdUnre 1.00 - 50.00 IB 0.01 10.00 Unrestr. prot. limit, multiple of generator
rated current
OpNegSeqDiff Off
On
- - On Negative Sequence Differential Enable
Off/On
IMinNegSeq 0.02 - 0.20 IB 0.01 0.04 Neg. sequence curr. limit, as multiple of
gen. rated curr.
Section 6 1MRK502052-UEN B
Differential protection
148
Technical manual