Completing The Test; High Speed Distance Protection Zones, Quadrilateral And Mho Characteristic Zmfpdis - ABB Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
4. Repeat steps
according to figure
11.4.6.2

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.
11.4.7 High speed distance protection zones, quadrilateral and mho
characteristic ZMFPDIS
Prepare the IED for verification of settings outlined in section
"Preparing for test"
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
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.
122
When the load encroachment characteristic is deliberately set very high in
order not to have an influence, then the test points 2 and 5 can be
replaced by test point 7.
1 to 3 to find the operate value for the phase-to-phase fault in L1 — L2
34 and table 29.
in this chapter.
35 and 36 and tables 30
The figures illustrating the characteristic for the distance protection function
can be used for settings with and without load encroachment. The solid lines
designate the diagram applicable when the load current compensation is
active. The solid line and all test points except 13 are valid for this case.
When the load current compensation is inactive, the dotted lines and test point
13 are valid. Test points 5, 6, and 7 are not valid for this measurement.
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and 31. In cases where the load encroachment characteristic is
1MRK 504 165-UEN E
TESTMODE setting to Off .
GUID-DF1650F4-EC3E-402B-BE26-EF2EF1034237 v6
"Requirements" and section
Transformer protection RET670
Commissioning manual
M13906-301 v5