ABB RED670 - Measuring the Operating Limit of Set Values

Table 28: Test points for phase-to-earth loop L3-E (Ohm/loop)
Test point Value Comments
1 X [X1+XN] XN=(X
0
-X
1
)/3
R 0
2 X 0
R RLdFw
3 X 0.85·[X1+XN] R≈0.491·(X1+XN)+RFFwPE
R 0.85·[X1+XN]·1/tan(60°)+RFFwPE
4 X 0.85·[X1+XN]
R -0.85·[X1+XN]·
tan (AngNegRes-90°)
5 X RFFwPE·tan (ArgLd)
R RFFwPE
6 X -0.5·RLdFw·tan (ArgDir)
R 0.5·RLdFw
The table showing test points for phase-to-earth loops is used together with figure
31.
Table 29: Test points for phase-to-phase loops L1–L2
Test point Value Comments
1 X X1
R 0
2 X 0
R RLdFw
3 X 0.85·X1 R=0.491·X1+0.5 RFFwPP
R 0.85·X1·1/tan(60°)+0.5 RFFwPP
4 X 0.85·X1
R -0.85·X1·tan (AngNegRes-90°)
5 X 0.5·RFFwPP·tan (ArgLd)
R 0.5·RFFwPP
6 X -0.5·RLdFw·tan (ArgDir)
R 0.5·RLdFw
The table showing test points for phase-to-phase loops is used together with figure
32.
11.4.6.1
Measuring the operating limit of set values
GUID-B1B7DEB6-7BC3-4A90-8D8F-E4E69B434AFA v3
Procedure:
Section 11 1MRK 505 378-UEN A
Testing functionality by secondary injection
130 Line differential protection RED670 2.2 IEC
Commissioning manual