ABB REG670 - Settings

Table 62: REFPDIF Output signals
Name Type Description
TRIP BOOLEAN Trip by restricted earth fault protection function
START BOOLEAN Start by restricted earth fault protection function
DIROK BOOLEAN Directional Criteria has operated for internal fault
BLK2H BOOLEAN Block due to 2-nd harmonic
IRES REAL Magnitude of fund. freq. residual current
IN REAL Magnitude of fund. freq. neutral current
IBIAS REAL Magnitude of the bias current
IDIFF REAL Magnitude of fund. freq. differential current
ANGLE REAL Direction angle from zerosequence feature
I2RATIO REAL Second harmonic ratio
6.4.5 Settings
Table 63: REFPDIF Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On
- - Off Operation Off / On
IdMin 4.0 - 100.0 %IB 0.1 10.0 Maximum sensitivity in % of IBase
CTFactorPri1 1.0 - 10.0 - 0.1 1.0 CT factor for HV side CT1 (CT1rated/
HVrated current)
CTFactorPri2 1.0 - 10.0 - 0.1 1.0 CT factor for HV side CT2 (CT2rated/
HVrated current)
CTFactorSec1 1.0 - 10.0 - 0.1 1.0 CT factor for MV side CT1 (CT1rated/
MVrated current)
CTFactorSec2 1.0 - 10.0 - 0.1 1.0 CT factor for MV side CT2 (CT2rated/
MVrated current)
Table 64: REFPDIF Group settings (advanced)
Name
Values (Range) Unit Step Default Description
ROA 60 - 90 Deg 1 60 Relay operate angle for zero sequence
directional feature
Table 65: REFPDIF Non group settings (basic)
Name
Values (Range) Unit Step Default Description
GlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global Base Value
groups
1MRK502052-UEN B Section 6
Differential protection
167
Technical manual