Cast Resin & Open Wound Dry Type Transformers

• Cast resin transformers are self-extinguishing and low fire hazard
The transformer’s insulation consists of an epoxy resin and quartz powder mixture (an eco-friendly material). They prevent the winding from fire. They are almost maintenance-free, so you don’t need to buy costly fire extinguishing equipment. Moreover, the cast resin transformer will also not produce toxic gases, not even effected by arcing.

• Zero oil usage:
It only needs air to cool the coil. Therefore, you don’t need to pay extra costs and labor for liquid-level checking, oil testing, oil recycling costs, and dielectric testing for moisture absorption. Because they are almost maintenance-free, there are no oil leaks when operating, which require gasket replacements.

• Safe and environment friendly:
Cast resin transformers do not create any risk for oil leaks and environmental pollution. During normal operation, transformer explosions are highly unlikely due to utilizing self-extinguishable non-toxic substances, even having external fires. They are also suitable for heavy condensation, wet and polluted environments. The transformers may also withstand abrupt environmental changes from -25ºC to +40ºC in a short time. 

• Low-cost installation and lower load losses:
There are almost no restrictions when on the installation site. The closer the transformer is to the load, the lower the cable losses and cost.
• Reliability: Cast resin transformers have a life cycle of more than ten years and a low failure rate when operated within its designed parameters. This makes it a highly reliable component that is suitable for any electrical infrastructure. You can contact Vietnamtransformer for more information about the cast resin transformer. 

• Low maintenance cost:
Cast resin transformer only needs air to cool, and liquid testing becomes unneeded. Its smooth coil surface eliminates massive dirt build-up, even in the most extreme circumstances. You only need technical personnel to clean and visually check it. 

• High short-time overload capacity:
Cast resin transformers can handle short-time overloads far better than oil-cooled units as the windings of cast resin transformers are encapsulated in resin, so the effects of axial and radial forces under high current loads are eliminated. 

• Crack-resistant:
Historically, the cracking of cast resin transformers shorter life cycles, so the latest technology has introduced glass fiber reinforcement in the windings that eliminate cracking by its heating and cooling curves.

• Low noise levels:
Due to flexible winding supports and design flux densities, they reduce the noise levels during operation.

• Compact design:
By the nature of the design, cast resin transformers are more compact so that they require less space than oil-cooled units.

• Sustainable:
Cast resin transformer contribute to saving our natural resource. Their structure and operation are environment friendly.