As a professional Dry Type Transformer manufacturer and supplier, Comewill provides reliable solutions designed for modern power distribution systems.
A quality Dry Type Transformer is a power transformation device that operates without insulating oil. Instead, it uses advanced solid insulation materials and natural air or forced air cooling to ensure safe and efficient operation. Because there is no oil involved, the equipment significantly reduces fire and explosion risks.
A Dry Type Transformer transfers electrical energy between circuits through electromagnetic induction while using air rather than oil for insulation and cooling. The iron core and windings are insulated using heat-resistant materials, ensuring safe operation even in demanding environments.
The transformer enclosure is typically made from stainless steel, cold-rolled steel plate, or aluminum alloy. These materials provide flame-retardant, explosion-resistant, and corrosion-resistant protection while allowing effective heat dissipation.
High-grade insulation materials such as H-class insulation ensure durability and moisture resistance. With strong mechanical strength and excellent short-circuit resistance, these transformers maintain stable performance even under heavy electrical loads.
1. Open Type
The open type is the most common configuration. The transformer body is directly exposed to the surrounding atmosphere, making it suitable for clean and relatively dry indoor environments. Cooling methods usually include natural air cooling or forced air cooling.
2. Enclosed Type
In this design, the transformer is installed inside a sealed enclosure and does not directly contact the surrounding air. Due to limited heat dissipation, it is often used in mining applications or environments that require explosion-proof equipment.
3.Cast Resin Type
Cast resin transformers use epoxy resin or similar materials as the primary insulation medium. They feature a compact structure, strong moisture resistance, and reliable insulation performance, making them ideal for medium and small capacity installations.
1. Energy Efficiency and Low Loss
Dry type transformers in stock provide excellent energy efficiency. No-load losses can be reduced by around 20%, while load losses are typically reduced by about 15% compared with national standard limits. This improves overall operational economy.
2. Fire Safety and Environmental Protection
Since there is no insulating oil, the equipment is naturally flame-retardant and explosion-resistant. It is environmentally friendly, pollution-free, and requires minimal maintenance.
3. High Reliability
The partial discharge level is typically less than 10PC, ensuring stable insulation performance. The coils do not absorb moisture or dust easily, and the transformer offers strong mechanical stability.
4. Strong Short-Circuit Resistance
The solid insulation structure and robust coil design provide excellent resistance to short circuits and lightning impulses.
5. Flexible Structural Design
The enclosure can be made from stainless steel, cold plate, or aluminum alloy. Different structural designs such as pull-out ventilation or heat dissipation types allow flexible installation. Cable entry and exit directions can also be configured according to installation requirements.
6. Intelligent Temperature Monitoring
According to customer requirements, the Dry Type Transformer can be equipped with temperature display and control systems to monitor operating temperature and automatically manage cooling.
