Phase Selection, Quad, Fixed Angle, Load Encroachment Fdpspdis (21) - Hitachi Relion 670 Series Commissioning Manual

1MRK506371-UUS Rev. M
Measuring the operating time of distance protection zones
Procedure:
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
setting t1PP.
3. Repeat steps 1 to 2 to find the operating time for the phase-to-ground fault according to test point
12 in figure
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.
Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.4.2 Phase selection, quad, fixed angle, load encroachment FDPSPDIS
(21)
Prepare the IED for verification of settings outlined in Section
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
tables 23
Line distance protection REL670
Commissioning manual
Test points 8, 9. 10 and 11 are intended to test the directional lines of impedance protection.
Since directionality is a common function for all 5 measuring zones, it is only necessary to
test points 8, 9. 10 and 11 once in the forward direction in order to test the accuracy of
directionality (directional angles). Directional functionality testing (trip inside, no-trip outside)
should always be made for all impedance zones set with directionality (forward or reverse).
23 and table
24 and table 22. Compare the result of the measurement with the setting t1PE.
and 24 for information.
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21 for zone 1. Compare the result of the measurement with the
Testing functionality by secondary injection
"Preparing the IED to verify
25 and 26 should be tested. See also
Section 11
M14944-154 v6
M14944-167 v3
M13906-3 v10
settings".
95