Insulating materials play a crucial role in transformers

  In oil-filled transformers, the insulating materials commonly used are insulation paper and insulating oil. The insulation paper is typically classified as Class A (105°C) and is immersed in insulating oil. Dry-type transformers, on the other hand, utilize insulating materials such as epoxy resin, pre-impregnated fabric, insulating varnish, and insulating boards, which are often classified as Class H (180°C).

  In transformers, insulating oil serves as the main insulation and cooling medium. The quality of the oil directly affects the insulation performance and lifespan of the transformer. The higher the voltage level and capacity of the electrical equipment, the higher the requirements for the performance of the insulating oil.

  Therefore, insulating materials in transformers are essential for maintaining proper insulation and ensuring the safe and efficient operation of the transformer.

  G10 Fiberglass Tube and 3640 Epoxy Fiberglass Tube are commonly used in dry-type transformers. Phenolic Paper Tube is typically used in oil-filled transformers. In some high-temperature scenarios, Diphenyl Ether High-Temperature Tube is required, which can have a temperature resistance rating of Class H or higher.