ABB REL670 Installation And Commissioning Manual page 103

Table 19: Test points for three-phase faults
Test point Value
1
4
= ⋅
X X 1
3
2
⎡
= ⋅
X 0.85
⎢ ⎣
⎡
= ⋅
⎢
R 0.8
⎣
3
4
= ⋅
X X 1
3
= ⋅
R 0.5 RFFwPP
4
1
= ⋅
X
⋅
2 3
= ⋅
R 0.5 RFFwPP
5
3
= ⋅
X RLdFw
3
R=RLdFw
6 X=0
R=RLdFw
Distance protection
4 1
+ ⋅
X 1 RFFwPP
⋅
3
2 3
⋅
⎤
3 2 1
⋅ + ⋅
X 1 RFFwPP
⎥ ⎦
3 4
RFFwPP
Comments
≈
X 1.33
≈
X 1.067
]
≈
X
≈
X
≈
X
Verifying settings by secondary
⋅
X set 1
⋅ + ⋅
X 1 0.231 RFFwPP
⋅
0.75 X set 1
⋅
0.289 RFFwPP
⋅
0.577 RLdFw
Chapter 11
injection
95