13. Switch off the injection current and check from the service menu readings ofthermal status and LOCKOUT that the lockout resets at the set percentage ofheat content.14. Activate the cooling input signal to switch over to base current IBase2.Wait 5 minutes to empty the thermal memory and set Time Constant 2 (Tau2)in accordance with the setting plan.15. Test with injection current 1.50 · IBase2 the thermal alarm level, the operatetime for tripping and the lockout reset in the same way as described for stageIBase1.16. Finally check that start and trip information is stored in the event menu.13.5.7.2 Completing the test SEMOD53632-51 v5Continue 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.13.5.8 Breaker failure protection, phase segregated activation andoutput CCRBRF M12104-2 v12Prepare the IED for verification of settings outlined in Section "Preparing the IEDto verify settings".The Breaker failure protection, 3-phase activation and output function CCRBRFshould normally be tested in conjunction with some other function that provides astart signal. An external START signal can also be used.To verify the settings in the most common back-up trip mode 1 out of 3, it issufficient to test phase-to-earth faults.At mode 2 out of 4 the phase current setting, IP> can be checked by single-phaseinjection where the return current is connected to the summated current input. Thevalue of residual (earth fault) current IN set lower than IP> is easiest checked inback-up trip mode 1 out of 4.13.5.8.1 Checking the phase current operate value,IP> M12104-23 v13The check of the IP> current level is best made in FunctionMode = Current andBuTripMode = 1 out of 3 or 2 out of 4.1. Apply the fault condition, including START of CCRBRF, with a currentbelow the set IP>.2. Repeat the fault condition and increase the current in steps until a trip occurs.3. Compare the result with the set IP>.1MRK 502 073-UEN A Section 13Testing functionality by secondary injectionGenerator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062 187Commissioning manual
