Trident®-ST

Trident®-ST is a three phase load break or fault interrupting switch with single phase switched ways. Each phase of the mechanism can be independently opened or tripped and reset, providing the ability to maintain energization of the other phases in the case of a single phase outage or fault. A mechanically ganged reset handle is available.

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Features and Benefits

Ratings Chart for Trident® Spring-operated Switchgear
Voltage Class (kV)152535*
Max. System Voltage (kV)15.5‡27†38
BIL (kV)110125150
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)20**2020
Fault Close 3 Times, Asym (kA)20**2020
Current, Sym (kA), 1 Sec.12.5**12.512.5
Fault Interrupting Current, Sym (kA)12.5**12.512.5
Vacuum Interrupter Mechanical Operations2,0002,0002,000
Note:
§ Up to 900A available on In/Out ; Up to 800A available on non-SafeVu multiway Trident
* 35kV not applicable for Trident-SP
† Models available up to 29.3kV
‡ Trident-S with SafeVu feature limited to 95kV BIL for 15kV
** 16kA available upon request up to 15.5kV with 25.6kA asym. Momentary Current and Fault Close
Product Literature

Trident Spring Operated Solid Dielectric Switchgear

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Trident® Spring-Operated Solid Dielectric Switchgear – Portuguese

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Trident® Spring-Operated Solid Dielectric Switchgear – Spanish

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Trident® Solid Dielectric Insulated Switches Brochure – Portuguese

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Trident® Solid Dielectric Insulated Switches Brochure – Spanish

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Trident® Solid Dielectric Insulated Switches Brochure

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Case Studies

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Application Guides

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Specifications

ATC Trident padmount (front access style) Specification

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Multiway padmount (air gear style) Trident Specification

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