Voltage protection relay SIPROTEC 7SC80

frequencyfor recloser controlsfor feeder

The SIPROTEC 7SC80 feeder protection can be used for protection and automation of medium voltage distribution feeders with grounded or low resistance grounded, isolated, or compensated neutral point. The 7SC80 features “flexible protection functions”. 20 additional protection functions can be created by the user. For example, a rate of change of frequency function or a reverse power function can be created. The relay provides circuit-breaker control. Functions Control functions/programmable logic •Commands for the ctrl. of CB, disconnect switches (isolators/isolating switches) •Control through keyboard, binary inputs, DIGSI 4 or SCADA system •User-defined PLC logic with CFC (e.g. interlocking) Monitoring functions •Operational measured values V, I, f •Energy metering values Wp,Wq •Minimum and maximum values •Circuit-breaker wear monitoring •Fuse failure monitor •8 oscillographic fault records •Trip circuit supervision