13.5.15 Generator stator overload protection GSPTTR (49S)GUID-A0B3EA43-7EEC-4FCC-A5BF-44BB8A8055E0 v113.5.15.1 Verifying the settings GUID-6B85A379-E977-48CC-B15C-4AF3EAB78478 v2Explained testing method is given for default value for the TD1 parameter.The function has heating content memory features. Thus if testing shots are doneconsecutively, operate time will be shorten accordingly, compared to the given operatecharacteristic. Therefore either wait until set tReset time has elapsed, between twoshots, or reset this memory by setting the RESET input into the function to valueTRUE1. Connect the test set for the appropriate three-phase current injection to the IEDphases A, B and C. The protection shall be fed with a symmetrical three-phasecurrent.2. Set the injected current to 116% of IBase, switch on the current and check operatetime of the trip, 120 s.3. Decrease the current slowly.4. The output signal PICKUP will reset if the measured current falls below resetlevel or if BLOCK signal is set to one.5. Switch off the current.6. Set the injected current to 120% of IBase, switch on the current and check operatetime of the trip, 60 s.7. Switch off the current.8. Set the injected current to 154% of IBase, switch on the current and check operatetime of the trip, 30 s.9. Switch off the current.10. Set the injected current to 226% of IBase, switch on the current and check operatetime of the trip, 10 s.11. Switch off the current.12. Finally check that pickup and trip information is stored in the event menu.13.5.15.2 Completing the test GUID-F79CE91E-7F07-45F4-8CDC-D7426CA9CBEA v2Continue to test another function or end the test by changing the Test mode setting toDisabled. Restore connections and settings to their original values, if they werechanged for testing purposes. Make sure that all built-in features for this function,which shall be in operation, are enabled and with correct settings.1MRK 502 073-UUS A Section 13Testing functionality by secondary injectionGenerator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 217Commissioning manual
