A dry type power transformer uses air or gas for insulation and cooling, not liquid. You gain a safer and more environmentally friendly option, as these transformers avoid leaks and reduce fire hazards.

Oil cooled power transformers help you manage large-scale electricity needs by using special insulating oils for cooling and protection. You often find them in power plants, homes, factories, hospitals, and railways. Knowing their strengths and weaknesses lets you make safer, more cost-effective choices for reliable power.

A three-phase oil-immersed power transformer, as defined by international standards, uses oil for cooling and insulation while converting voltages in three-phase electrical systems.

A high voltage power transformer lets you convert high-voltage AC power to low-voltage AC power or the other way around. According to IEC 60076, you find these transformers rated up to 765 kV:

​A power electrical transformer changes the voltage of electricity to meet your needs. You find an electrical transformer in many devices and systems. A power electrical transformer helps you use electricity safely and efficiently.

A low voltage dry transformer steps down or steps up AC voltage safely for your electrical systems. You find air, not oil, as the main insulation in a low voltage dry transformer. You rely on a low voltage dry transformer for safer operation. This transformer boosts efficiency. You improve system safety using a low voltage dry transformer.

In oil-immersed distribution transformers, oil is used as a heat conductor, and heat is released through radiator fins. Since the mineral oil has a flash point of 160 to 180°C, oil-immersed transformers must be installed in separate locations to prevent fire hazards in public spaces.

A cast resin dry-type transformer, also known as an epoxy cast resin dry-type transformer, is widely used due to its epoxy resin construction. Its windings are encased in high-quality protective material, ensuring robust insulation even in challenging environments with dust and humidity.

Compare resin cast (epoxy potting) and VPI (vacuum impregnation) for dry-type transformers. Learn the differences in insulation, mechanical strength, thermal performance, typical applications, and how to choose the right process.