- Insulation: Dry-type transformers employ solid insulation materials such as epoxy resin or cast resin for electrical insulation. This eliminates the need for liquid insulation like oil, making them more environmentally friendly and reducing the risk of leaks or spills.
- Cooling: Dry-type transformers rely on natural air convection or forced-air cooling systems for heat dissipation. They do not require cooling oil, simplifying maintenance and reducing the risk of fire hazards.
- Fire Resistance: Dry-type transformers offer higher fire resistance compared to oil-immersed transformers. The absence of flammable cooling oil significantly reduces the risk of fire initiation and propagation, making them suitable for installations in fire-sensitive areas.
- Installation Flexibility: Dry-type transformers are typically smaller and lighter than oil-immersed transformers. This compact design allows for easier transportation, installation, and flexibility in placement, especially in locations with limited space.
- Environmental Compatibility: Dry-type transformers are more environmentally friendly as they do not contain oil or other hazardous substances. They are suitable for use in sensitive environments such as hospitals, schools, and residential areas where minimizing environmental impact is crucial.
- Maintenance: Dry-type transformers generally require less maintenance compared to oil-immersed transformers. With no oil to monitor or replace, routine maintenance tasks are simplified, reducing downtime and associated costs.
- Noise Level: Dry-type transformers produce lower noise levels compared to oil-immersed transformers. This can be advantageous in noise-sensitive areas or installations that require quieter operation.
- Safety: Dry-type transformers offer enhanced safety features due to the absence of flammable oil and reduced fire risk. They are often equipped with protective devices such as temperature sensors and overload protection mechanisms to ensure safe and reliable operation.
Overall, the key characteristics of dry-type transformers include solid insulation, air cooling, fire resistance, installation flexibility, environmental compatibility, lower maintenance requirements, reduced noise levels, and enhanced safety features. These characteristics make them suitable for various applications, especially in indoor settings or areas with specific safety and environmental requirements.