Transformer Interlayer Insulation Film

Transformer Interlayer Insulation Film is a high-performance electrical insulation film specially designed for interlayer insulation in transformer manufacturing. Made from premium biaxially oriented polyester (PET) resin, it features excellent dielectric strength, reliable electrical insulation performance, good thermal stability and outstanding dimensional stability. This interlayer insulation film also offers great resistance to transformer oil, chemicals and moisture, maintaining stable insulation performance during long-term operation and temperature cycling. It is mainly used for winding interlayer insulation, core-to-winding insulation and phase-to-phase insulation in oil-immersed transformers and dry-type transformers, effectively isolating different voltage levels to prevent breakdown and short circuits. We provide various thickness and width specifications, and support customization of roll length and surface treatment to adapt to the specific insulation requirements of different transformer models and production processes.