13.2.1 IdentificationM14869-1 v4Function description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberFuse failure supervision FUFSPVC - -13.2.2 Functionality SEMOD113820-4 v12The aim of the fuse failure supervision function (FUFSPVC) is to block voltagemeasuring functions at failures in the secondary circuits between the voltagetransformer and the IED in order to avoid inadvertent operations that otherwise mightoccur.The fuse failure supervision function basically has three different detection methods,negative sequence and zero sequence based detection and an additional delta voltageand delta current detection.The negative sequence detection algorithm is recommended for IEDs used in isolatedor high-impedance grounded networks. It is based on the negative-sequence quantities.The zero sequence detection is recommended for IEDs used in directly or lowimpedance grounded networks. It is based on the zero sequence measuring quantities.The selection of different operation modes is possible by a setting parameter in order totake into account the particular grounding of the network.A criterion based on delta current and delta voltage measurements can be added to thefuse failure supervision function in order to detect a three phase fuse failure, which inpractice is more associated with voltage transformer switching during stationoperations.1MRK 511 408-UUS A Section 13Secondary system supervisionPhasor measurement unit RES670 2.2 ANSI 367Technical manual
