or if the disconnectors operate in parallel to other closed connections, or if they aregrounding on both sides.• Circuit breaker closing is only interlocked against running disconnectors in its bay oradditionally in a transformer bay against the disconnectors and grounding switch onthe other side of the transformer, if there is no disconnector between CB andtransformer.• Circuit breaker opening is only interlocked in a bus-coupler bay, if a bus bar transferis in progress.To make the implementation of the interlocking function easier, a number of standardizedand tested software interlocking modules containing logic for the interlocking conditionsare available:• Line for double and transfer busbars, ABC_LINE (3)• Bus for double and transfer busbars, ABC_BC (3)• Transformer bay for double busbars, AB_TRAFO (3)• Bus-section breaker for double busbars, A1A2_BS (3)• Bus-section disconnector for double busbars, A1A2_DC (3)• Busbar grounding switch, BB_ES (3)• Double CB Bay, DB_BUS_A(3), DB_LINE(3), DB_BUS_B(3)• Breaker-and-a-half diameter, BH_LINE_A, BH_CONN, BH_LINE_B (3)The interlocking conditions can be altered, to meet the customer specific requirements, byadding configurable logic by means of the graphical configuration tool PCM600. Theinputs Qx_EXy on the interlocking modules are used to add these specific conditions.The input signals EXDU_xx shall be set to true if there is no transmission error at thetransfer of information from other bays. Required signals with designations ending in TRare intended for transfer to other bays.10.5 Logic rotating switch for function selection and LHMIpresentation SLGGIO10.5.1 IdentificationFunction description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberLogic rotating switch for functionselection and LHMI presentationSLGGIO - -1MRK 511 287-UUS A Section 10Control345Technical manual
