what is the ambient temperature of transformer oil & winding?

The ambient temperature of transformer oil and winding refers to the surrounding temperature that affects the operation and efficiency of a transformer. Typically, the ambient temperature can range from -20�C to 40�C (-4�F to 104�F) for most transformers. However, the oil and winding temperatures during operation can rise significantly due to electrical losses, often reaching up to 85�C (185�F) or higher, depending on the transformer’s design and load conditions. Proper temperature management is crucial for transformer reliability and longevity.