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
and table
for zone 1. Compare the result
of the measurement to the setting
tPPZ1
.
3.
to
to find the operating time for the phase-to-earth fault
according to test point 12 in figure
measurement to the setting
tPEZ1
.
4.
Repeat steps
to find the operating time for all other used measuring zones.
The zones that are not tested have to be blocked and the zone that is tested has
to be released.
10.4.7.3
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.
10.4.8
High Speed distance for series compensated line zones,
quadrilateral and mho characteristic ZMFCPDIS
Prepare the IED for verification of settings outlined in section
Measure operating characteristics during constant current conditions. Keep the
measured current as close as possible to its rated value or lower. But make sure 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.
The test procedure has to take into consideration that the shaped load encroachment
characteristic is active. It is therefore necessary to check the setting. To verify the
settings with the shaped load encroachment characteristic the test should be carried
out according to figures
. In cases where the load
encroachment characteristic is activated tests according to the adjusted figures should
be carried out.
To verify the settings for the operating points according to the following fault types
should be tested:
•
One phase-to-phase fault
•
One phase-to-earth fault
The shape of the operating characteristic depends on the values of the setting
parameters.
Section 10
1MRK 506 355-UEN A
Testing functionality by secondary injection
112
Line distance protection REL670 2.1 IEC
Commissioning manual
Summary of Contents for Relion 670 Series REL670
Page 1: ...Relion 670 series Line distance protection REL670 2 1 IEC Commissioning manual ...
Page 2: ......
Page 30: ...24 ...
Page 34: ...28 ...
Page 64: ...58 ...
Page 68: ...62 ...
Page 90: ...84 ...
Page 254: ...248 ...
Page 260: ...254 ...
Page 269: ...263 ...