SEMOD130390-4 v4Status of primary switching object for busbar protection zone selectionFunction description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberStatus of primary switching object forBusbar protection zone selectionBDCGAPC(128 instances)- -6.1.2 Basic applications SEMOD127448-1 v16.1.2.1 General M12097-3 v3Basic types of applications for REB670 IED are shown and described in this chapter.For these applications usually three phase version of the IED, with two differentialzones and four (or even eight) 3-phase CT inputs, is used.6.1.2.2 Meshed corner application and T-connection application M12098-3 v4The REB670 general differential function is suitable for application on mesh-cornerarrangements. Mesh corners might have four or even up to six CT inputs and arebasically simple single busbar arrangements. A similar application will occur when aT-protection is required for breaker-and-a-half or ring busbar arrangements.ANSI11000237-1-en.vsd252352152ANSI11000237 V1 EN-USFigure 40: Example of REB670 application on T-connection6.1.3 Busbar protection applications SEMOD127456-1 v2A busbar protection scheme design depends very much on the substation arrangement.Complexity of the scheme can drastically vary from station to station. Typical1MRK 505 370-UUS A Section 6Differential protectionBusbar protection REB670 2.2 ANSI 109Application manual
