1.
Subject the IED to healthy normal load conditions for at least two seconds.
2.
Apply the fault condition to find the operating time for the phase-to-phase fault
according to test point 10 in figure
and table
for zone 1. Compare the result of the
measurement with the setting
t1PP.
3.
Repeat steps
to find the operating time for the phase-to-earth fault according to
test point 10 in figure
. Compare the result of the measurement with the
setting
t1PE.
4.
Repeat steps
to find the operating time for all other used measuring zones.
Observe that the zones that are not tested have to be blocked and the zone that is tested
has to be released.
12.4.8.3
Completing the test
GUID-7FA2EA27-B6E2-48AB-8D53-22425E322FFA v1
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.
12.4.9
M13888-2 v9
Power swing detection ZMRPSB
The aim is to verify that the settings of the Power swing detection function ZMRPSB is
according to the setting table and to verify that ZMRPSB operates as expected.
Prepare the IED for verification of settings outlined in
section "Requirements" and
section "Preparing for test" in this chapter.
Before starting this process, all impedance measuring zones shall be set and in operation. Test
the outer resistive boarder in forward and reverse direction,
RLdOutFw and RLdOutRv and the
inner reactive boarder in forward and reverse direction
X1InFw and X1InRv. See figure
47
.
The corresponding resistive border for the inner resistive boundary and outer resistive
boundary is calculated automatically from the setting of
kLdRFw and kLdRRv.
The inner zone of ZMRPSB must cover all zones by at least 10% margin.
The test is mainly divided into two parts, one which aim is to verify that the settings are in
accordance to the selectivity plan and a second part to verify the operation of ZMRPSB. The
proposed test points for validation of the settings are numbered according to figure
47
Test of the interactions or combinations that are not configured are not considered in this
instruction.
Section 12
1MRK 502 067-UEN B
Testing functionality by secondary injection
126
Commissioning manual
