Measuring The Operating Limit Of Set Values - ABB Relion 670 Series Commissioning Manual

1MRK 504 165-UEN E
Test point
3
4
5
6
The table showing test points for phase-to-earth loops is used together with figure 33.
Table 29: 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 34.
11.4.6.1

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 33.
Compare the result of the measurement with the expected value according to table 28.
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
Transformer protection RET670
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
33 and table 28.
© Copyright 2017 ABB. All rights reserved
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 11
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