what are the names of transformer oil?

Transformer oil, also known as insulating oil, is primarily used in electrical transformers to provide insulation and cooling. The most common types of transformer oil include mineral oil, which is derived from refining crude oil, and synthetic esters, which are biodegradable and derived from vegetable oils. Additionally, there are natural esters, also biodegradable, made from renewable resources. Each type has specific properties suited for different operational environments and safety standards.