If reverse directional function is selected, set the injection current to lag thepolarizing voltage by an angle equal to RCA.4. Increase the injected current and note the value at which the studied step ofthe function operates.5. Decrease the current slowly and note the reset value.6. Block lower set steps when testing higher set steps according to theinstructions that follow.7. Connect a trip output contact to a timer.8. Set the injected current to 200% of the operate level of the tested step, switchon the current and check the time delay.For inverse time curves, check the operate time at a current equal to 110% ofthe operate current in order to test parameter txmin.9. Check that all operate and start contacts operate according to theconfiguration (signal matrixes)10. Reverse the direction of the injected current and check that the step does notoperate.11. Check that the protection does not operate when the polarizing voltage iszero.12. Repeat the above-described tests for the higher set steps.13. Finally, check that start and trip information is stored in the event menu.13.5.5.1 Completing the test SEMOD53296-122 v4Continue to test another function or end the test by changing the TESTMODEsetting to Off. Restore connections and settings to their original values, if they werechanged for testing purposes.13.5.6 Sensitive directional residual overcurrent and powerprotection SDEPSDE SEMOD175060-3 v7Prepare the IED for verification of settings outlined in Section "Preparing the IEDto verify settings".Section 13 1MRK 502 073-UEN ATesting functionality by secondary injection180 Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062Commissioning manual
