ABB REL670 Installation And Commissioning Manual page 101

Table 18: Test points for phase-phase loops L1–L2
Test point Value
1 X= X1
R= 0
2 X= X1
R= RIPP
3 X=0.85· X1set
⋅
0.85 X
=
R
3
4
3
= ⋅
X RFFwPP
4
3
= ⋅
R RFFwPP
4
5
=
X RLdFw
R= RLdFw
6 X=0
R= RLdFw
7 X=0.8· RLdFw ·tan( ArgDir )
R=0.8· RLdFw
Distance protection
1 RFFwPP
+
2
⋅
tan( ArgLd )
Verifying settings by secondary
Comments
≈ ⋅
X 0.433 RFFwPP
≈ ⋅
X 0.577 RLdFw
≈ − ⋅
X 0.214 RLdFw
Chapter 11
injection
93