6. Apply the fault and the initiation again. The value of current should be below theset value Pickup_BlkCont.7. Arrange disconnection of BC closed signal(s) well before set back-up trip time t2.It simulates a correct CB tripping.8. Verify that back-up trip is not achieved. Re-trip can appear for example, due toselection “Re-trip without current check”.9. Disconnect injected AC and BFI_3P input signals.13.5.8.8 Completing the test M12104-72 v5Continue 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.13.5.9 Pole discrepancy protection CCPDSC (52PD) SEMOD55625-59 v6Prepare the IED for verification of settings outlined in Section "Preparing the IED toverify settings".13.5.9.1 Verifying the settings SEMOD55625-63 v81. External detection logic, Contact function selection = ContactSel setting equalsCCPDSC (52PD) signal from CB. Activate the EXTPDIND binary input, andmeasure the operating time of CCPDSC (52PD).Use the TRIP signal from the configured binary output to stop the timer.2. Compare the measured time with the set value tTrip.3. Reset the EXTPDIND input.4. Activate the BLKDBYAR binary input.This test should be performed together with Autorecloser SMBRREC (79).5. Activate the EXTPDIND binary input.No TRIP signal should appear.6. Reset both BLKDBYAR and EXTPDIND binary inputs.7. Activate the BLOCK binary input.8. Activate EXTPDIND binary input.NO TRIP signal should appear.9. Reset both BLOCK and EXTPDIND binary inputs.10. If Internal detection logic Contact function selection = ContactSel setting equalsPole position from auxiliary contacts. Then set inputs 52b_A...52a_C in a statusthat activates the pole discordance logic and repeats step 2 to step 6.11. Unsymmetrical current detection with CB monitoring: Set measured current inone phase to 110% of current release level. Activate CLOSECMD and measurethe operating time of the CCPDSC (52PD) protection.Section 13 1MRK 502 073-UUS ATesting functionality by secondary injection206 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062Commissioning manual
