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Load and Fault Interrupting through 38kV, 800A load break and continuous, and 16kA symmetrical fault interrupting.

SOLID DIELECTRIC TECHNOLOGY
Trident switchgear utilizes G&W’s time proven, submersible epoxy polymer system to fully encapsulate the vacuum interrupters. This system provides excellent insulation properties and incorporates a permanently bonded semi-conductive external coating providing fully shielded, dead-front construction. Internal shields limit the electrical stress in the epoxy, therefore increasing its electrical integrity. All modules are factory tested for partial discharge to ensure void free construction. The switches are available for load break or fault interrupting applications.  Fault interrupters utilize Dual ratio current transformers encapsulated within each module providing either 500:1 or 1000:1 protection characteristics. 

SUBMERSIBILITY
Solid dielectric switchgear is deadfront and fully submersible. Units have remained fully operable after withstanding a 20 foot head of water for 20 days.

MAINTENANCE BENEFITS
Solid dielectric insulation means no more routine maintenance as with oil and air switchgear. Solid dielectric insulation also offers an alternative to gas insulated devices.

APPLICATION FLEXIBILITY
Solid dielectric switchgear offers compact, modular construction. Module configurations permit elbow style connections to be all front mounted or front/back mounted depending on user preference. The same size modules can function as either load break or fault interrupting. Three phase switches can be linked together to create tailored multiway switch configurations. Trident fault interrupters offer a wide variety of electronic overcurrent controls for customized system protection coordination. Automation is easy whether it is an automatic transfer scheme or a fully integrated distribution automation “Smart Grid” project.

OIL FUSE CUTOUT REPLACEMENT – Eliminate the need to replace fuse links or maintain insulating oil. The Trident-S with SafeVu does not require any maintenance and features compact size, lightweight, integral visible break, and fault interrupting capability. It is the perfect solution to replace obsolete oil fuse cutouts.

 

G&W Trident-S solid dielectric two way switches now include an innovative visible break feature built into the switch, which eliminates the need to remove elbows or use externally mounted linkage systems to provide a visible open. This makes the Trident-S with SafeVu™ ideal for subsurface applications where space and safety practices prevent the linemen from entering the vault.

Operation
The visible break is achieved with a blade type switch incorporated within the solid dielectric module. The blade is in series with the vacuum interrupter and provides a clear visible open. The blade is easily visible through a viewing window molded as an integral part of each module. If the application calls for a resettable fault interrupter, the Trident with SafeVu can be supplied with integral current transformers and a self-powered G&W overcurrent protection control. The CTs and CT leads are molded within the solid dielectric module, protecting them from the environmental conditions of subsurface vaults. The CTs are dual ratio and preset for either 500:1 or 1000:1. The G&W Type 7 control is particularly well suited for subsurface applications, as it is housed within the Trident mechanism housing.  

Features:
  • Operator Safety
  • Submersibility
  • Compact, Lightweight Construction
     

Trident-SR, magnetic actuator, SCADA ready switches simplify the process of automated switching and fault interruption on systems rated through 38kV. The extremely flexible design permits the user to customize the best solution for their particular application. From manual load break or fault interrupting, to remote operation, to fully automated distribution automation or Smart Grid schemes, the Trident-SR offers multiple application functionality, all within the same compact switch footprint. Compare these features:

FEATURES

  • 15.5, 27 or 38kV, 800A continuous current
  • 12.5kA symmetrical interrupting
  • Manual or automated operation
  • Padmount and vault designs
  • Vertical or horizontal mounting
  • Hookstick operable with front mounted handles.

For load break switching – The rugged magnetic actuator is tested to over 10,000 mechanical load break operations.

For fault interrupting - A variety of Schweitzer Engineering Laboratories (SEL) relays and G&W electronic controls are available to best meet the specific protection needs of the application. Programming using a laptop computer or built-in LCD display are available options. G&W controls are powered by CTs housed within the epoxy module. Other style controls are also available.

 
 

Trident-S three phase, spring assisted switchgear is available for load break or fault interrupting switching. The Trident-S is ideal for three phase distribution switching and protection, as well as for three phase oil fuse cutout and oil switchgear replacements. Fault protection can be provided using vacuum interrupters with integral CTs and a variety of overcurrent controls.

FEATURES

  • 15.5, 27 or 38kV, 800A continuous current
  • 16kA symmetrical interrupting at 15.5kV, 12.5kA at 27 and 38kV
  • Manual or automated operation
  • Padmount and vault designs
  • Vertical or horizontal mounting
  • Hookstick operable with permanent or removable handles
  • Submersible construction
  • Optional handle permitting switch to function as a load break or fault interrupter


 

Trident-ST three phase, spring assisted switchgear can provide either three phase or single phase fault protection. The Trident-ST is ideal for three phase distribution switching and protection, as well as for three phase oil fuse cutout and oil switchgear replacements. Fault protection can be provided using vacuum interrupters with integral current transformers and a variety of overcurrent controls.

Features
• 15.5, 27, or 29.3kV, 630A continuous current
• 12.5kA symmetrical interrupting
• Padmount and vault designs
• Vertical or horizontal mounting
• Hookstick operable with permanent or removable handles.
• Optional 3-phase external ganged linkage for 3-phase operation

 

Trident-SP single phase, spring assisted switchgear is available for load break or fault interrupting switching. The compact units are ideal for switching residential loops and for oil fuse cutout replacements. Fault protection can be provided using vacuum interrupters with integral current transformers and a variety of overcurrent controls.

Features
• 15.5, 27, or 29.3kV, 630A continuous current
• 12.5kA symmetrical interrupting
• Padmount and vault designs
• Vertical or horizontal mounting
• Large viewing windows simplify visual identification of open (green) or closed (red) vacuum contact position. The position indicator is connected directly to the drive assembly.
• Hookstick operable, permanent mounted operating handles
• Submersible switch construction
• Submersible controls available
• Manual operation


Ideal For Oil Fuse Cutouts
Trident fault interrupters offer the following advantages:
• No more fuse links to stock or replace
• Maintenance-free, nonflammable solid dielectric insulation
• Safe, positive load break operation and easy reset of tripped circuits
• Electronic controls mirror fuse link curves
• Compact footprint for easy change out
• Submersible construction
• 200A well or 600A separable


 


Drawings (Click Image to Enlarge)

 

 

 
 
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