Switch reactors with confidence and certainty

Switching high voltage reactors can impose a severe duty on the connected system, switching device, and shunt reactor. Modern switching devices interrupt the small inductive current shortly after the separation of the contacts. If the interrupter’s contacts have not separated enough to sustain the rapidly rising TRV , a re-ignition of the arc will occur. These high magnitude and high frequency re-ignitions can shorten the life of the reactor and the switching device. The Southern States’ RLSwitcher®, with its’ patented interrupter design, has helped satisfied customers minimize the probability and magnitude of these harmful re-ignitions since 2010.

Tertiary Reactor Switcher

Southern States’ success has recently led to the development of our new RLS38T, an RLSwitcher® designed specifically for transformer Tertiary connected shunt reactors rated 15.5kV and 38kV. The RLS38T’s unique contact set helps address the need for high switching current (up to 3000A) required at lower voltages. By minimizing re-ignitions and maintaining contact life, it provides increased life and reliability for utilities. For more information, please take a moment to visit our published news release.

  • Patented Interrupter making and breaking an SF6 minimizes probability and magnitude of re-ignitions, thus providing the following benefits:
    • Reduced Turn-to-Turn voltage stress on reactor windings
    • Minimized damage to the switching device nozzle and contacts, thus providing long life
    • Minimized harmful transients on the systems
  • Simplified design improves reliability
  • Gas system monitoring provided for all devices
  • Compact design can fit is tight spaces
  • Single mechanism spring-open, spring-close mechanism provides reliable long-life performance for less than or equal to 245kV
  • Fully assembled and tested at the factory
  • Ships with minimum dis-assembly to minimize installation time
Choose Voltage Rating:
Maximum VoltageReactor Switching CurrentShunt Reactor Rating
245kV630 A267 Mvar
362kV630 A395 Mvar
550kV440 A400 Mvar

Additional Ratings

Maximum Voltage Rating (kV)245362550
Continuous Current Rating630 A630 A440 A
Power Frequency60 Hz60 Hz60 Hz
BIL (kV)90013001800
Short Circuit Breaking CurrentNANANA
Interrupting Time3 cycles3 cycles3 cycles
Short-Time Withstand40 kA (3 sec), 63 kA (18 cycles)
Short-Circuit Making63 kA63 kA63 kA
Peak Withstand164 kA164 kA164 kA
Insulator DesignCompositeCompositeComposite
Ambient Temperature Range-30° C to +50° C-40° C to +50° C-40° C to +50° C

Consult factory for 123 kV – 170 kV applications.