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Trident®-SR Solid Dielectric Switchgear

Trident®-SR series offers extremely fast operation speeds of just 3.5 cycles for both load and fault interrupting options. Its flexible design can be configured to provide a wide range of solutions for any application, from basic remote operation, to distribution automation, or Smart Grid schemes including Automatic Transfer in under 10 cycles. Trident®-SR switches offer multiple application functionality within a same compact switch footprint. Explore how Trident®-SR integrates into our advanced switchgear solutions to enhance grid reliability and automation.

Features and Benefits

  • Construction – Available compact construction with front accessible switch operators and bushings, or front access to operators and rear access to bushings.

  • SafeVu Visible Break – Available with an innovative visible break built into the switch, which eliminates the need to remove elbows or use externally mounted components to provide a visible open.

  • Automation – The Trident®-SR switch series was specifically designed to provide the high-speed switching required for distribution automation schemes. A variety of relays such as SEL, ABB, and GE are available with G&W Electric programming and cabinet construction. Cabinets can be ordered in a low voltage enclosure for padmount, and pedestal, wall mount or IP68 rated submersible for vault installed switchgear. Programming for protection, LaZer custom solutions, or Automatic Transfer in under 10 cycles.

  • Fault Interrupting – Three phase fault interrupting up to 12.5kA.

  • Voltage Sensing – Available with fully encapsulated integral voltage sensing for use with voltage indication panel to determine in-phase condition or for use with a relay with up to 1% accuracy.

Ratings Chart for Trident® Automated Switchgear

Voltage Class (kV)152535
Max. System Voltage (kV)15.527‡38
BIL (kV) 110Δ 125 150110Δ125150
Continuous Current (A)630§630§630§
Load Break Current (A)630§630§630§
AC Withstand, 1 min. (kV)356070
AC Withstand, Productions, 1 min. (kV)344050
DC Withstand, 15 min.5378103
Momentary Current, RMS, asym (kA)202020
Fault Close 3 times, asym (kA)202020
1 second Current, sym (kA)12.512.512.5
Fault Interrupting Current, sym (kA)12.512.512.5
Vacuum Interrupter Mechanical Operations10,00010,00010,000
Δ BIL impulse rating is 95kV when using the SafeVu feature
‡ Up to 29.3kV Max. System Voltage available
§ Up to 900A available on In/Out without SafeVu, Up to 800A available on multiway Trident without SafeVu

Need more information? Contact the rep in your area.