



JST Power Equipment is more than a manufacturer – we are a solutions innovator at the cutting edge of transformer technology. We continually work to create products with higher efficiencies and lower costs. Each year we make substantial investments in the research and development of new products and manufacturing techniques. We regularly innovate on behalf of our customers, collaborating with them to find solutions to their specific challenges. Explore JST’s Cast Resin Transformers.

Environmentally friendly dry-type solution with a robust structure for harsh environments
Cast epoxy resin transformers are highest on the evolutionary scale of transformer design and offer the best combination of electrical and mechanical performance factors. The robust structure—achieved by casting the windings in a solid shell of epoxy—provides mechanical strength unsurpassed by any other transformer available on the market. Cast resin transformers offer increased safety and can help to achieve environmental and sustainability goals set forth by many industries.

JST Power Equipment is more than a manufacturer—we are a solutions innovator at the cutting edge of transformer and switchgear technologies. We continually work to create products with higher efficiencies, lower costs, and advanced features. Each year, we make substantial investments in the research and development of new products and manufacturing techniques, regularly collaborating with our customers to find solutions to their specific challenges while continuously delivering higher efficiencies, lower costs, and advanced features.

JST Power Equipment’s power transformers are engineered to meet the needs of the North American market. Our solution is designed to handle low to medium voltage ranges and power levels up to 100 MVA and beyond, with the capacity to operate under harsh industrial conditions and the flexibility to adapt to specific technical requirements. They provide smooth operation of industrial equipment with optimized performance and reduced operational costs. The compact size allows for easy integration into various systems, and our reputation for robust construction ensures durability and minimal maintenance.
Key Features

Our single-phase liquid-filled pad mounted transformer dielectric fluid-filled, distribution transformers specially designed to improve power performance while reducing weight and enhancing quality, safety and sustainability. Engineered to ensure reliable power distribution, the compartment-type design is suitable for mounting on outdoor pads and designed for handling underground power distribution loads for a wide range of industry applications.
Our padmount solutions offer the following benefits:

Our three-phase liquid-filled pad mounted transformer is a dielectric fluid-filled, distribution transformers specially designed to improve power performance while reducing weight and enhancing quality, safety and sustainability. This commercial distribution transformer specifically designed for handling underground distribution loads for utility, renewable energy and commercial and industrial applications. Our design, tested in accordance with industry standards, provides a cost-effective solution and ensures safety and environmental protection.
Our padmount solutions offer the following benefits:

JST Power Equipment is more than a manufacturer – we are a solutions innovator at the cutting edge of transformer technology. We continually work to create products with higher efficiencies and lower costs. Each year, we make substantial investments in research and development of new products and manufacturing techniques. We regularly innovate on behalf of our customers, collaborating with them to find solutions to their specific challenges. Explore JST’s systems and solutions.

Environmentally friendly, safe alternative to liquid-filled transformers
VPI transformers are an excellent alternative in applications that call for an environmentally friendly, economical solution. They reduce flammability concerns, require less maintenance, and are less prone to contaminating the surrounding environment than liquid-filled transformers, avoiding the need for catch basins during construction. Our VPI transformers are designed with NOMEX® insulation. Its compact structure makes the electric field between insulation and cooling medium more uniform—reducing dielectric loss. NOMEX® is non-toxic and is fire and moisture resistant for increased safety.