ABB REG670 - Page 155

Table 57: GENPDIF Group settings (advanced)
Name Values (Range) Unit Step Default Description
EndSection1 0.20 - 1.50 IB 0.01 1.25 End of section 1, multiple of generator
rated current
EndSection2 1.00 - 10.00 IB 0.01 3.00 End of section 2, multiple of generator
rated current
SlopeSection2 10.0 - 50.0 % 0.1 40.0 Slope in section 2 of operate-restrain
characteristic, in %
SlopeSection3 30.0 - 100.0 % 0.1 80.0 Slope in section 3 of operate-restrain
characteristic, in %
OpCrossBlock Off
On
- - On Operation On / Off for cross-block logic
between phases
NegSeqROA 30.0 - 120.0 Deg 0.1 60.0 Operate Angle of int/ext neg. seq. fault
discriminator, deg
HarmDistLimit 5.0 - 100.0 % 0.1 10.0 (Total) relative harmonic distorsion limit,
percent
TempIdMin 1.0 - 5.0 IdMin 0.1 2.0 Temp. Id pickup when input
raisePickUp=1, multiple of IdMin
AddTripDelay 0.000 - 60.000 s 0.001 0.100 Additional trip delay, when input
raisePickUp=1
OperDCBiasing Off
On
- - Off Operation DC biasing On / Off
OpenCTEnable Off
On
- - Off Open CT detection feature Off/On
tOCTAlarmDelay 0.100 - 10.000 s 0.001 1.000 Open CT: time to alarm if an open CT is
detected, in sec
tOCTResetDelay 0.100 - 10.000 s 0.001 0.250 Reset delay in s. After delay, diff. function
is activated
tOCTUnrstDelay 0.100 - 100.000 s 0.001 10.000 Unrestrained diff. protection blocked after
this delay, in s
Table 58: GENPDIF 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
1MRK502052-UEN B Section 6
Differential protection
149
Technical manual