TripSaver^® Dropout Recloser

S&C’s TripSaver Dropout Recloser is a single-phase 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 recloser with 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.

FEATURES
RATINGS
ADVANTAGES
STYLES
PRODUCT SUPPORT

Features

The cost-effective way to improve reliability on lateral circuits

Cuts sustained service interruptions from temporary faults — improves SAIFI and SAIDI performance, saves time and money
Cuts number of momentary interruptions at the feeder — improves MAIFI performance
Open–Close–Open–Drop-Out operating sequence provides visible open gap
Trip-free performance — interrupter resets after drop-out, ready for next operation
Self-powered, factory-programmed microprocessor control — installation is quick and easy; no batteries needed
Retrofittable in existing Type XS Fuse Cutout mountings, Loadbuster® Tool operable
“Service Soon” indicator tracks cumulative fault current interrupted. TripSaver drops open and won’t reset if service is needed

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.

Ratings

kV				Amperes, RMS
System Class	Nom.	Max	BIL	Continuous	Interrupting, Sym.
15	15	15.5	110	30	1250
				50	2 000
				100	4 000
15/25	15	15.5	125	30	1250
				50	2 000
				100	4 000
			150	30	1250
				50	2 000
				100	4 000
25	25	29	125	30	1250
				50	2 000
				100	4 000
			150	30	1250
				50	2 000
				100	4 000
25/34.5	25	29	150	30	1250
				50	2 000
				100	4 000

The minimum trip current is 70 amperes for TripSavers rated 30 amperes continuous, 120 amperes for TripSavers rated 50 amperes continuous, and 240 amperes for TripSavers rated 100 amperes continuous.
Meets applicable sections of IEEE C37.60-2003.
Applicable for protection of single-phase-to neutral circuits only where the leakage distance to ground meets users’ requirements.
Meets 170-kV BIL rating requirement of IEC Publication 282-2. Applicable to mountings with porcelain insulators only.

Advantages

As shown in the following table, TripSaver offers a number of advantages over traditional lateral protection devices.

Comparison of Lateral Protective Devices
Feature/Benefit	Single-Phase Hydraulic Recloser	Dropout-Style Electronic Sectionalizer	TripSaver
Easy to install
Low initial price
Low installation cost
Fault-interrupting capability
Easy to reset
Electronic Control
No bypass switch required
Light weight compared to oil reclosers
No battery backup required
Fits in cutout mounting
No momentary outage on the main feeder for lateral faults