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