ABB RED670 - Completing the Test; High Speed Distance Protection Zones, Quadrilateral and Mho Characteristic ZMFPDIS

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
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 Pr
otection/
PhaseSelection(PDIS, 21)/FRPSPDIS:x .
3. Repeat steps
1 to 2 to find the operate values for the remaining test points
according to figure 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.
4. Repeat steps
1 to 3 to find the operate value for the phase-to-phase fault in L1
— L2 according to figure 32 and table 29.
11.4.6.2 Completing the test
M13906-301 v5
Continue to test another function or end the test by changing the TESTMODE
setting to Off
. Restore connections and settings to their original values, if they were
changed for testing purposes.
11.4.7 High speed distance protection zones, quadrilateral and
mho characteristic ZMFPDIS
GUID-DF1650F4-EC3E-402B-BE26-EF2EF1034237 v6
Prepare the IED for verification of settings outlined in section
"Requirements" and
section "Preparing for test" in this chapter.
Measure operating characteristics during constant current conditions. Keep the
measured current as close as possible to its rated value or lower. But make sure it is
higher than the set minimum operating current.
Ensure that the maximum continuous current to the
IED does not exceed four times
its rated value, if the measurement of the operating characteristics runs under
constant voltage conditions.
The test procedure has to take into consideration that the shaped load encroachment
characteristic is active. It is therefore necessary to check the setting. To verify the
settings with the shaped load encroachment characteristic the test should be carried
out according to figures
33 and 34 and tables 30 and 31. In cases where the load
encroachment characteristic is activated tests according to the adjusted figures
should be carried out.
1MRK 505 378-UEN A Section 11
Testing functionality by secondary injection
Line differential protection RED670 2.2 IEC 131
Commissioning manual