Setting Parameters - ABB Relion 670 Series Technical Reference Manual

Section 5
Differential protection
5.1.5
Table 70: L3CPDIF (87L) Group settings (basic)
Name Values (Range)
Operation Disabled
Enabled
IdMin 0.20 - 2.00
IdMinHigh 0.20 - 10.00
tIdMinHigh 0.000 - 60.000
IdUnre 1.00 - 50.00
NegSeqDiffEn Disabled
Enabled
NegSeqROA 30.0 - 120.0
IMinNegSeq 0.01 - 0.20
CrossBlockEn No
Yes
ChargCurEnable Disabled
Enabled
AddDelay Disabled
Enabled
IMaxAddDelay 0.20 - 5.00
tDefTime 0.000 - 6.000
tMinInv 0.001 - 6.000
Table continues on next page
150
Table 69: LDLPDIF (87L) Output signals
Name Type
TRIP BOOLEAN
TR_A BOOLEAN
TR_B BOOLEAN
TR_C BOOLEAN
TRLOCAL BOOLEAN
TRLOC_A BOOLEAN
TRLOC_B BOOLEAN
TRLOC_C BOOLEAN
TRREMOTE BOOLEAN
DIFLBLKD BOOLEAN

Setting parameters

Unit Step
- -
IB 0.01
IB 0.01
s 0.001
IB 0.01
- -
Deg 1.0
IB 0.01
- -
- -
- -
IB 0.01
s 0.001
s 0.001
Description
General trip from differential protection system
Trip signal from phase A
Trip signal from phase B
Trip signal from phase C
Trip from local differential function
Trip from local differential function in phase A
Trip from local differential function in phase B
Trip from local differential function in phase C
Trip from remote differential function
Local line differential function blocked
Default Description
Disabled Disable/Enable Operation
0.30 Oper - restr charact., section 1 sensitivity,
multiple IBase
0.80 Initial lower sensitivity, as multiple of IBase
1.000 Time interval of initial lower sensitivity, in sec
10.00 Unrestrained differential current limit, multiple
of IBase
Enabled Off/On selection for internal / external fault
discriminator
60.0 Internal/external fault discriminator Operate
Angle, degrees
0.04 Min. value of neg. seq. curr. as multiple of
IBase
No Off/On selection of the cross -block logic
Disabled Off/On selection for compensation of
charging currents
Disabled Off/On selection for delayed diff. trip command
1.00 Below limit, extra delay can be applied,
multiple of IBase
0.000 Definite time additional delay in seconds
0.010 Inverse Delay Minimum Time. In seconds
1MRK505222-UUS C
Technical reference manual