88
Distance protection
Chapter 11
Verifying settings by secondary
injection
Figure 28:
Operate characteristic for phase selection element, forward direction single phase
faults.
ArgDir
R
(Ohm/phase)
X
(Ohm/phase)
RFFwPE
60 deg
1
2
3
4
)
1
(
3
2
XN
X
+
⋅
Earthfault loop
5
6
8
9
10
Default values:
ArgNegRes=115
ArgDir=15
ArgLd=30
ArgNegDir
85%
ArgLd
20%
20% of RLdFw
80% of RLdFw
7
11
12
en05000496.vsd
Summary of Contents for RELION REL670
Page 8: ...Contents ...
Page 72: ...64 About this chapter Chapter 9 Establishing connection and verifying the LON communication ...
Page 174: ...166 Remote communication Chapter 11 Verifying settings by secondary injection ...
Page 190: ...182 Maintenance Chapter 13 Fault tracing and repair ...
Page 198: ...190 Glossary Chapter 14 Glossary ...