ABB Relion 670 Series Commissioning Manual page 123

1MRK 506 371-UUS E
Table 29: Test points for phase-to-phase loops A-B
Test point
1
2
3
4
5
6
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
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-ground loop ECG, test point 1, according to figure 31. 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
4. Repeat steps
to figure
11.4.6.2 Completing the test
continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
Line distance protection REL670
Commissioning manual
Value
X X1
R 0
X 0
R RLdFwd
X 0.85·X1
R 0.85·X1·1/tan(60°)+0.5
RFLdFwdPP
X 0.85·X1
R -0.85·X1·tan (AngNegRes-90°)
X 0.5·RFLdFwdPP·tan (ArgLd)
R 0.5·RFLdFwdPP
X -0.5·RLdFwd·tan (ArgDir)
R 0.5·RLdFwd
1 to 2 to find the operate values for the remaining test points according to
31 and table 28.
When the load encroachment characteristic is deliberately set very high in
order not to have an influence, then the test points 2 and 5 can be replaced by
test point 7.
1 to 3 to find the operate value for the phase-to-phase fault in A - C according
32 and table 29.
© Copyright 2017 ABB. All rights reserved
Testing functionality by secondary injection
Comments
R=0.491·X1+0.5 RFLdFwdPP
GUID-B1B7DEB6-7BC3-4A90-8D8F-E4E69B434AFA v3
TESTMODE setting to Disabled .
Section 11
M13906-301 v5
117