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

WHAT IS SOLID DIELECTRIC INSULATION?
G&W’s solid dielectric insulation is a field proven epoxy which is used to insulate the high voltage connections of a vacuum switch.  The load break and fault interrupting vacuum bottle and bushing conductors are fully over molded creating a single phase module.  Each module is then coated with a semi-conductive paint creating a continuous grounding surface for a truly dead front design.  For three phase switches, three modules are combined together to create one way of the switch.  

Each module can also include an integral current transformer fully protected by the solid dielectric epoxy.  This ensures that the transformer is impervious to environmental conditions and insulated from extreme temperatures.

G&W’s molding expertise allows for various options including 200A bushing wells or 600A apparatus bushings.  The rugged epoxy surface minimizes the force required for removing elbow connections compared to rubber-to-rubber junctions.  Different module orientations are available which permit cable entry from the front, back, or bottom of the unit.

The solid dielectric insulations and vacuum bottle combination make the Trident switchgear suitable for wet and corrosive environments, vertical or horizontal mounting and use in any altitude.

WHEN YOU NEED VISIBLE BREAK...TRIDENT WITH SAFEVU
Trident PLS and PLT switches are available with the  SafeVu option. These switches 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 with SafeVu ideal for subsurface applications where space and safety practices prevent the linemen from entering the vault to perform these functions.

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. 

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. Tridents do 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.

SPECIFICATIONS

The Trident PLS Series is available in two through six way configurations, in any combination of three phase load break switch ways and three phase fault interrupter ways.  The fault interrupter utilizes a trip-free mechanism, which provides interruption independent of the operating handle when closing into a fault. Viewing windows provide visible indication of the contact position.

Trident load and fault interrupting combination switches provide a direct replacement for power fused air and vacuum-in-oil switchgear.  Some ideal applications include:

Transformer and Motor Protection — The three phase trip feature and high continuous current make the PLS switches ideal for protecting three phase motors and transformer loads.

Loop Switching —Standard 600A loop switching is accomplished using field proven vacuum switching and solid dielectric insulation. Switching through 630A provides up to 12.5kA symmetric fault protection using resettable, electronically controlled vacuum interrupters. The vacuum interrupters also function as load break switches.

 

The Trident PLT Series is available in two through six way configurations, in any combination of three phase load break switch ways and single phase fault interrupter ways. Each fault interrupting mechanism incorporates a trip-free design which permits interruption independent of the operating handle if closing into a fault.  Each phase of the fault interrupting mechanism can be independently tripped and reset, providing the ability to maintain energization of the other phases in the case of a single phase fault. Viewing windows permit visible indication of the contact position of all phases.

Trident load and fault interrupting combination switches provide a direct replacement for power fused air and vacuum-in-oil switchgear.  Some ideal applications include:

Loop Switching —Standard 600A loop switching is accomplished using field proven vacuum switching and solid dielectric insulation. Switching through 630A provides up to 12.5kA symmetric fault protection using resettable, electronically controlled vacuum interrupters. The vacuum interrupters also function as load break switches.

Residential and Fuse Replacement —The single phase trip feature of the PLT switches makes them ideal for protecting single phase motors and transformer loads.

Visible Break —The load break and three phase fault interrupter ways are available with G&W’s SafeVu feature, which provides an integrated visible break disconnect switch in series with the vacuum interrupter. This eliminates the need to remove elbows or use externally mounted linkage systems to provide a visible open. Switches equipped with the SafeVu feature incorporate redundant mechanical interlocks to ensure the load break switch is open prior to the operation of the visible break switch.


 

Trident 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.

The Single Phase Trident is available in a Front Access design, with operating handles and bushings on the same side of the switch, The switch can be mounted vertically (as shown on the right) or horizontally (as shown on page 19) to supply the most sensible footprint. 

 
 
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