Settings - ABB Relion Technical Manual

Section 6
Differential protection
6.2.5
6.2.6
120
Signal
IN
IBIAS
IDIFF
ANGLE
I2RATIO

Settings

Table 33: Basic general settings for the function REFPDIF (REF1-)
Parameter Range
GlobalBaseSel 1 - 6
Table 34: Basic parameter group settings for the function REFPDIF (REF1-)
Parameter Range
Operation Off
On
IdMin 4.0 - 100.0
Table 35: Advanced parameter group settings for the function REFPDIF (REF1-)
Parameter Range
ROA 60 - 90
Monitored data
Table 36: REFPDIF (87N) Monitored data
Name Type
IRES REAL
IN REAL
IBIAS REAL
Table continues on next page
Description
Magnitude of fundamental frequency neutral current
Magnitude of the bias current
Magnitude of fundamental frequency differential current
Direction angle from zero sequence feature
Second harmonic ratio
Step Default
1 1
Step Default
- Off
0.1 10.0
Step Default
1 60
Values (Range) Unit
- A
- A
- A
1MRK 502 048-UUS A
Unit Description
- Selection of one of the
Global Base Value groups
Unit Description
- Operation Off / On
%IB Maximum sensitivity in %
of IBase
Unit Description
Deg Relay operate angle for
zero sequence directional
feature
Description
Magnitude of fundamental
frequency residual current
Magnitude of fundamental
frequency neutral current
Magnitude of the bias current
Technical manual