Measuring The Operating Time Of Distance Protection Zones; Completing The Test; Phase Selection With Load Encroachment, Quadrilateral Characteristic Fdpspdis (21) - ABB RET670 Commissioning Manual

1MRK 504 154-UUS B
10.4.1.2

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
the setting
3. Repeat steps 1 to 2 to find the operating time for the phase-to-ground fault according to test
point 12 in figure
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.
10.4.1.3

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.
10.4.2 Phase selection with load encroachment, quadrilateral
characteristic FDPSPDIS (21)
Prepare the IED for verification of settings outlined in section "Requirements" and
section "Preparing for test" in this chapter.
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
also tables
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).
14 and table
t1PP .
15 and table 18. Compare the result of the measurement with the setting
19 and 20 for information.
17 for zone 1. Compare the result of the measurement with
Testing functionality by secondary injection
TestMode setting to Disabled .
16 and 17 should be tested. See
Section 10
M14944-154 v6
M14944-167 v3
M13906-3 v9
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