Completing The Test; Power Swing Detection Zmrpsb - ABB RET670 Commissioning Manual
Relion 670 series, transformer protection
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Also See for RET670:
- Applications manual (1016 pages) ,
- Commissioning manual (328 pages) ,
- Installation and commissioning manual (240 pages)
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1MRK 504 165-UEN A
11.4.8.2
11.4.8.3
11.4.9
Transformer protection RET670 2.2 IEC
Commissioning manual
Testing functionality by secondary injection
test point 1 in figure
with the set value.
3.
Repeat steps
1
to
2
Observe that the zones that are not tested have to be blocked and the zone that
is tested has to be released.
4.
Repeat steps
1
to
3
E according to figure
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 six 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).
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 10 in figure
the result of the measurement with the setting t1PP.
3.
Repeat steps
1
to
2
according to test point 10 in figure
measurement with the setting t1PE.
4.
Repeat steps
1
to
2
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 Off. Restore connections and settings to their original values, if they were
changed for testing purposes.
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.
35
and table 32. Compare the result of the measurement
to find the operating value for test points 2, 3 in table 32.
to find the operating value for the phase-to-earth fault L3-
36
and table 33.
35
to find the operating time for the phase-to-earth fault
36
and table 33. Compare the result of the
to find the operating time for all other used measuring
Section 11
GUID-70AEC42A-9BC7-445A-AE21-2CEC0C3A79DC v3
and table
32
for zone 1. Compare
GUID-7FA2EA27-B6E2-48AB-8D53-22425E322FFA v1
M13888-2 v9
137
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