14.2.8 Interlocking for 1 1/2 CB BH14.2.8.1 IdentificationFunction description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberInterlocking for 1 1/2 breaker diameter BH_CONN - 3Interlocking for 1 1/2 breaker diameter BH_LINE_A - 3Interlocking for 1 1/2 breaker diameter BH_LINE_B - 314.2.8.2 FunctionalityThe interlocking for 1 1/2 breaker diameter (BH_CONN, BH_LINE_A,BH_LINE_B) functions are used for lines connected to a 1 1/2 breaker diameteraccording to figure 317.WA1 (A)WA2 (B)QB1QC1QA1QC2QC9QB6QB9QB2QC1QA1QC2QC3QB6QC3QB62QB61 QA1QC1 QC2QC9QB9BH_LINE_A BH_LINE_BBH_CONNen04000513.vsdIEC04000513 V1 ENFigure 317: Switchyard layout 1 1/2 breakerThree types of interlocking modules per diameter are defined. BH_LINE_A andBH_LINE_B are the connections from a line to a busbar. BH_CONN is theconnection between the two lines of the diameter in the 1 1/2 breaker switchyardlayout.Section 14 1MRK502052-UEN BControl666Technical manual
