1. Check that AutoLock and TripLockout are both set to Off.2. Initiate a three-phase fault.An adequate time interval between the faults should be considered, to overcomea reclaim time caused by the possible activation of the Autorecloser functionSMBRREC. The function must issue a three-phase trip in all cases, when trip isinitiated by any protection or some other built-in or external function. Thefollowing functional output signals must always appear simultaneously: TRIP,TRL1, TRL2, TRL3 and TR3P.10.11.1.2 1ph/3ph operating modeIn addition to various other tests, the following tests should be performed. Theydepend on the complete configuration of an IED:Procedure1. Make sure that TripLockout and AutoLock are both set to Off.2. Initiate different single-phase-to-earth faults one at a time.Single-phase tripping will only be allowed when an autoreclose attempt willfollow. The autorecloser function SMBRREC has the functionality such as thelong trip time, CB ready and so on, which can prevent a proper single-phasetripping and autoreclose. To by-pass this problem the fault initiation should bewith a test set and with the autoreclose in full service with a test set connected tothe distance protection function. Consider using an adequate time intervalbetween faults, to overcome a reclaim time of which is activated by SMBRREC.Only a single-phase trip should occur for each separate fault and only one of thetrip outputs (TRLn) should be activated at a time. Functional outputs TRIP andTR1P should be active during each fault. No other outputs should be active.3. Initiate different phase-to-phase and three-phase faults.Consider using an adequate time interval between faults, to overcome a reclaimtime, which is activated by SMBRREC. A three-phase trip should occur for eachseparate fault and all of the trips. Functional outputs TRIP, all TRLn and TR3Pshould be active at each fault.No other outputs should be active.4. Initiate a single phase-to-earth fault and switch it off immediately when the tripsignal is issued for the corresponding phase. Initiate the same fault once againwithin the reclaim time of the used SMBRREC.A single-phase fault shall be given at the first fault. A three-phase trip must beinitiated for the second fault. Check that the corresponding trip signals appearafter both faults. Functional outputs TRIP, TRLn and TR1P should be activeduring first fault. No other outputs should be active. Functional outputs TRIP, allTRLn and TR3P should be active during second fault.5. Initiate a single phase-to-earth fault and switch it off immediately when the tripsignal is issued for the corresponding phase. Initiate the second single phase-to-1MRK 511 360-UEN A Section 10Testing functionality by secondary injectionBay control REC670 2.1 IEC 177Commissioning manual
