• A bi-stable relay (BR) or two auxiliary relays to simulate a CB• Two push-buttons (SC, ST) to operate the BR and a change-over switch (SRY)to simulate CBREADY• Possibly a switch simulation the synchronizing check SESRSYN conditionIEDCLOSECBTripCBCLOSEDCBREADYBRSCSTSRYTo testset+ -IEC04000202-3-en.vsdIEC04000202 V3 EN-USFigure 23: Simulating the CB operation by a bi-stable relay/breaker simulatorand manual switches9.8.2.1 Preparation of the verification M12400-40 v81. Check the function settings on the local HMI under Main menu/Settings/IED Settings/Control/Autorecloser79,5(0–>1)/SMBRREC:x(79,5(0–>)):xIf any timer settings are reduced to speed up or facilitate the testing, they shallbe set to normal after testing. A temporary label on the IED can be a reminderto restore normal settings after which a verification test should be performed.2. Decide if a synchrocheck function SESRSYN shall be included in the test.If SESRSYN as an internal function or external device is not operated by theinjection, input signal SYNC must be connected as a permanent high signal orcontrolled by a switch.3. Read and make notes of the reclosing operation counters on the local HMIunder Main menu/Test/Function status/Control/AutoRecloser79,5(0–>1)/SMBRREC(79,5(0–>1)):x1MRK 506 383-UEN A Section 9Testing functionality by secondary injectionLine distance protection REL650 2.2 IEC 143Commissioning manual
