ABB REL670 - Authorization and User Access Levels

95
Distance protection Chapter 11
Verifying settings by secondary
injection
Table 19: Test points for three-phase faults
Test point Value Comments
1
2
3
4
5
R=RLdFw
6 X=0
R=RLdFw
4
1
3
X
X=⋅
X1.33 1Xset
≈
⋅
]
41
0.85 1
3
23
X X RFFwPP=⋅ + ⋅
⋅
⎡
⎢
⎣
32 1
0.8 1
34
R
XRFFwPP
⋅
=⋅ ⋅+⋅
⎡
⎤
⎢
⎥
⎦
⎣
X 1.067 1 0.231X RFFwPP
≈
⋅+ ⋅
4
1
3
X
X=⋅
0.5RRFFwPP=⋅
X0.75 1Xset
≈
⋅
1
X
23
R
FFwPP=⋅
⋅
0.5
R
RFFwPP=⋅
X0.289RFFwPP
≈
⋅
3
3
X
RLdFw=⋅
X 0.577
R
LdFw
≈
⋅