8. Check that all trip and pickup contacts trip according to the configuration (signalmatrixes).9. Reverse the direction of the injected current and check that the protection doesnot trip.10. If 2 out of 3 or 3 out of 3 currents are chosen for operation: Check that thefunction will not trip with current in one phase only.11. Repeat the above described tests for the higher set stages.12. Check that pickup and trip information is stored in the event menu .13.5.2.2 Completing the test SEMOD56287-118 v4Continue to test another function or end the test by changing the TESTMODE setting toDisabled. Restore connections and settings to their original values, if they werechanged for testing purposes.13.5.3 Instantaneous residual overcurrent protection EFPIOC (50N)SEMOD52967-3 v7Prepare the IED for verification of settings outlined in Section "Preparing the IED toverify settings".Values of the logical signals for EFPIOC are available on the local HMI under Mainmenu/Tests/Function status/Current protection/InstResidualOverCurrent(50N,IN>>)/EFPIOC(50N;IN>>):x, where x = 1, 2, and 3.The Signal Monitoring in PCM600 shows the same signals that are available on thelocal HMI.To verify the settings the following fault type should be tested:• Phase-to-ground faultEnsure that the maximum continuous current, supplied from the current source used forthe test of the IED, does not exceed four times the rated current value of the IED.13.5.3.1 Measuring the trip limit of set values SEMOD52967-11 v91. Inject a phase current into the IED with an initial value below the set value ofIN>> and also make sure that the set value IN>> is in between IN>>Min andIN>>Max.2. Increase the injected current in the Ln or in the neutral (summated current input)phase until the TRIP signal appears.3. Disable the fault currentSection 13 1MRK 502 073-UUS ATesting functionality by secondary injection190 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062Commissioning manual
