When the load encroachment characteristic is deliberately set very high inorder not to have an influence, then the test points 2 and 5 can bereplaced by test point 7.4. Repeat steps 1 to 3 to find the operate value for the phase-to-phase fault in L1 — L2according to figure 42 and table 26.12.4.6.2 Completing the test M13906-301 v5Continue to test another function or end the test by changing theTestMode setting toOff.Restore connections and settings to their original values, if they were changed for testingpurposes.12.4.7 High speed distance protection zones, quadrilateral and mhocharacteristic ZMFPDIS GUID-DF1650F4-EC3E-402B-BE26-EF2EF1034237 v5Prepare the IED for verification of settings as outlined in section "Requirements" andsection "Preparing for test" in this chapter.Measure operating characteristics during constant current conditions. Keep the measuredcurrent as close as possible to its rated value or lower. But make sure it is higher than the setminimum operating current.Ensure that the maximum continuous current to the IED does not exceed four times its ratedvalue, if the measurement of the operating characteristics runs under constant voltageconditions.The test procedure has to take into consideration that the shaped load encroachmentcharacteristic is active. It is therefore necessary to check the setting. To verify the settingswith the shaped load encroachment characteristic the test should be carried out according tofigures 43 and 44 and tables 27 and 28. In cases where the load encroachment characteristic isactivated 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 betested:• One phase-to-phase fault• One phase-to-earth faultThe shape of the operating characteristic depends on the values of the setting parameters.The figures illustrating the characteristic for the distance protection functioncan be used for settings with and without load encroachment. The solid linesdesignate the diagram applicable when the load current compensation isactive. 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 point13 are valid. Test points 5, 6, and 7 are not valid for this measurement.Section 12 1MRK 502 067-UEN BTesting functionality by secondary injection118Commissioning manual
