Where are silicone oil filled transformers typically used?

Silicone oil filled transformers are often used where fire safety is a priority, such as indoor substations, tunnels, high rise buildings, offshore platforms, and environmentally sensitive or densely populated areas. Silicone fluids generally have high fire points and stable thermal properties, reducing fire propagation risk compared with mineral oil. They can also be used in special applications requiring temperature stability. The tradeoffs can include higher fluid cost and the need to confirm compatibility and maintenance practices. Selection is typically driven by safety codes, insurance requirements, and site risk assessments.