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
12 in figure
23 and table 20 for zone 1. Compare
the result of the measurement with the setting t1PP.
3. Repeat steps 1 to 2 to find the operating time for the
phase-to-earth fault
according to test point 12 in figure
24 and table 21. Compare the result of the
measurement with the setting t1PE.
4. Repeat steps 1 to 3 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.
11.4.1.3
Completing the test
M14944-167 v3
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.
11.4.2 Phase selection, quad, fixed angle, load encroachment
FDPSPDIS
M13906-3 v10
Prepare the IED for verification of settings outlined in Section
"Preparing the IED
to verify settings".
The phase selectors operate on the same measuring principles as the impedance
measuring zones. So it is necessary to follow the same principles as for distance
protection, when performing the secondary injection tests.
Measure operating characteristics during constant current conditions. Keep the
measured current as close as possible to the rated value of its associated input
transformer, or lower. But ensure that 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.
To verify the settings the operating points according to figures 25 and 26 should be
tested. See also tables 22 and 23 for information.
Section 11 1MRK 505 378-UEN A
Testing functionality by secondary injection
118 Line differential protection RED670 2.2 IEC
Commissioning manual
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