What are the technical considerations for pcb oil in transformers?

When considering PCB oil in transformers, key technical factors include its dielectric strength, thermal conductivity, and environmental impact. PCB (polychlorinated biphenyl) oil offers excellent insulating properties but poses significant health and environmental risks due to its toxicity and persistence. Regulatory compliance is critical, as many jurisdictions restrict or ban PCB use. Additionally, proper handling, storage, and disposal procedures must be established to mitigate contamination and ensure safety during transformer operation and maintenance.