Measuring The Operating Limit Of Set Values - ABB RELION REG670 Commissioning Manual

1MRK 502 067-UEN B
Test point
3
4
5
6
The table showing test points for phase-to-earth loops is used together with figure 41.
Table 26: Test points for phase-to-phase loops L1–L2
Test point
1
2
3
4
5
6
The table showing test points for phase-to-phase loops is used together with figure 42.
12.4.6.1

Measuring the operating limit of set values

Procedure:
1. Supply the IED with healthy conditions for at least two seconds.
2. Apply the fault condition and slowly decrease the measured impedance to find the
operate value for of the phase-to-earth loop L3, test point 1, according to figure 41.
Compare the result of the measurement with the expected value according to table 25.
The corresponding binary signals that inform about the operation of the phase selection
measuring elements are available in the local HMI under
Main menu/Test/Function status/Impedance Protection/PhaseSelection(PDIS, 21)/
FRPSPDIS:x .
3. Repeat steps
figure
Commissioning manual
Value
X 0.85·[X1+XN]
R 0.85·[X1+XN]·1/tan(60°)+RFFwPE
X 0.85·[X1+XN]
R -0.85·[X1+XN]·
tan (AngNegRes-90°)
X RFFwPE·tan (ArgLd)
R RFFwPE
X -0.5·RLdFw·tan (ArgDir)
R 0.5·RLdFw
Value
X X1
R 0
X 0
R RLdFw
X 0.85·X1
R 0.85·X1·1/tan(60°)+0.5 RFFwPP
X 0.85·X1
R -0.85·X1·tan (AngNegRes-90°)
X 0.5·RFFwPP·tan (ArgLd)
R 0.5·RFFwPP
X -0.5·RLdFw·tan (ArgDir)
R 0.5·RLdFw
1 to 2 to find the operate values for the remaining test points according to
41 and table 25.
Testing functionality by secondary injection
Comments
R≈0.491·(X1+XN)+RFFwPE
Comments
R=0.491·X1+0.5 RFFwPP
GUID-B1B7DEB6-7BC3-4A90-8D8F-E4E69B434AFA v3
Section 12
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