ABB REL670 Installation And Commissioning Manual page 96

88
Distance protection
Earthfault loop
10
2
⋅ X +
( 1 XN )
3
20% of RLdFw
80% of RLdFw
Figure 28: Operate characteristic for phase selection element, forward direction single phase
faults.
X (Ohm/phase)
2
1
85%
11
5
20%
9
ArgNegDir
6
12
8
7
RFFwPE
Chapter 11
Verifying settings by secondary
Default values:
ArgNegRes=115
ArgDir=15
ArgLd=30
3
ArgLd
4
60 deg
R (Ohm/phase)
ArgDir
en05000496.vsd
injection