Section 13 Secondary system supervision..........................................293Current circuit supervision (87).............................................................293Identification.................................................................................... 293Application....................................................................................... 293Setting guidelines............................................................................ 294Fuse failure supervision FUFSPVC...................................................... 294Identification.................................................................................... 294Application....................................................................................... 294Setting guidelines............................................................................ 295General.......................................................................................295Setting of common parameters.................................................. 296Negative sequence based.......................................................... 296Zero sequence based.................................................................297Delta V and delta I ..................................................................... 298Dead line detection.....................................................................298Fuse failure supervision VDSPVC (60).................................................299Identification.................................................................................... 299Application....................................................................................... 299Setting guidelines............................................................................ 300Section 14 Control...............................................................................303Synchronism check, energizing check, and synchronizingSESRSYN (25)..................................................................................... 303Identification.................................................................................... 303Application....................................................................................... 303Synchronizing............................................................................. 303Synchronism check.................................................................... 305Energizing check........................................................................ 307Voltage selection........................................................................ 308External fuse failure....................................................................309Application examples.......................................................................310Single circuit breaker with single busbar.................................... 311Single circuit breaker with double busbar, external voltageselection..................................................................................... 312Single circuit breaker with double busbar, internal voltageselection..................................................................................... 313Double circuit breaker.................................................................314Breaker-and-a-half......................................................................315Setting guidelines............................................................................ 318Table of contents8 Bay control REC670 2.2 ANSIApplication manual