4. Close the switch to the station earth and check that the trip from the rotor earthfault will be given after the set delay time.5. Open the switch to the station earth and check that the trip signal resetsinstantaneously.6. Connect an adjustable resistor to the field circuit (221 on RXTTE4). Decreasethis resistor from a large value until the function operates and check monitoredvalue ICOSFI.When the generator has been started the service value of injection voltage andinjection current shall be checked so that there is no risk for unwanted trip due tolarge capacitive detected current.13.4.8.2 Completing the test SEMOD158692-35 v2Continue 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 Current protection SEMOD53531-1 v113.5.1 Instantaneous phase overcurrent protection 3-phase outputPHPIOC (50) M11754-3 v8Prepare the IED for verification of settings outlined in Section "Preparing the IED toverify settings".Values of the logical signals for PHPIOC are available on the local HMI under Mainmenu/Tests/Function status/Current protection/InstPhaseOverCurrent(50,3I>>)/PHPIOC(50;3I>>):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.13.5.1.1 Measuring the trip limit of set values M11754-11 v71MRK 502 073-UUS A Section 13Testing functionality by secondary injectionGenerator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 187Commissioning manual
