TripSaver™ Dropout Recloser

Available from S&C Electric Company

S&C’s TripSaver Dropout Recloser, offered in system class voltage ratings of 15, 15/25, 25, and 25/34.5 kV, is ideally suited for lateral circuits that frequently experience momentary faults. This Smart Grid solution eliminates the permanent outages which can result when lateral fuses operate in response to these momentary faults. It also eliminates the momentary interruptions on feeders in instances where the substation breaker is tripped to save the lateral fuse during a momentary fault.

TripSaver is a self-powered, electronically controlled, single-phase vacuum fault interrupter. It’s available for installation in new or existing current-production (“R10”) S&C Type XS Fuse Cutout mountings. A two-insulator, branch-feeder style mounting is also available. TripSaver requires no programming or batteries for back-up power.

TripSaver features an open-close-open-dropout operating sequence with a 5-second reclosing time interval. The interrupter resets five seconds after dropout, ready for the next operation. The first opening operation uses a very fast 1.5- to 5.5-cycle clearing time. The second opening operation uses a time-current characteristic equivalent to either a “K” Speed or “T” Speed fuse curve. This operating sequence provides excellent coordination with the substation breaker and downstream transformer fuses.

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