TripSaver^® II Cutout-Mounted Recloser

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

TripSaver II is a self-powered, electronically controlled single-phase recloser using vacuum fault interrupter technology. It is available for installation in new or existing current-production (“-R10” or “-R11”) S&C or MacLean Power Systems Type XS Fuse Cutout Mountings. A two-insulator, branch-feeder style mounting is also available. TripSaver II requires no programming or batteries for back-up power.

FEATURES
RATINGS
ADVANTAGES
STYLES
USER INTERFACE
PRODUCT SUPPORT

Features

The cost-effective way to improve reliability on lateral circuits

LCD screens displays real-time device status – information scrolling activated by cycling mode-selector lever; Six languages supported
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
Supports up to three reclosing operations before it drops open – provides visible open gap
Low minimum pickup current at 5A
A wide variety of time-current characteristic (TCC) curves are available – provides excellent coordination with other devices
Self-powered, factory-programmed microprocessor control – installation is quick and easy; no batteries needed
Retrofittable in existing “-R10” or “-R11” S&C or MacLean Type XS Fuse Cutout mountings, Loadbuster® Tool operable
Inrush restrain feature always on – device will not nuisance trip on inrush when closed into the mounting
Overload interruption capability – device will drop open on overload condition
Ice-breaking capability – device is able to break ¾″ (20mm) of ice
Sectionalizing option for 4-kA rated models – allow a 4-kA device to operate as a sectionalizer for faults between 4-kA and 6.5-kA

TripSaver II supports up to three reclosing operations (four tripping operations in total) before it drops open, with a 5-second open time interval. The interrupter resets two seconds after drop-open, ready for the next operation. TripSaver II reverts to its first TCC curve after 15 seconds have elapsed since the last reclosing operation.

Ratings

kV				Amperes, RMS
System Class	Nom.	Max	BIL	Continuous	Interrupting, Sym
15	15	15.5	110	100	4 000
15	15	15.5	110	100	6 300
25	25	29	125	100	4 000
			125	100	6 300
			150	100	4 000
			150	100	6 300

Minimum trip current is 5 amperes.
These models can be applied to protect single-phase-to-neutral circuits only in solidly-grounded-to-neutral (multi-grounded-to-neutral) 34.5-kV systems where leakage distance to ground meets user’s requirement. These models use 25-kV 150-kV BIL mounting.

Advantages

As shown in the following table, TripSaver II 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 II
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