50 Years of Designing and Manufacturing Engineered Plastic Parts for Industrial Equipment

Electrical Transformers

Oil-filled transformers use Timco´s cooling Corrugated Vulcanized Fiber for electrical insulation applications. CVF is a unique dense material having high strength imparted by the retained fibrous structure. This material is free from foreign matter that might impair electrical properties. It is used in distribution transformers and electromagnets as a duct through which cooling oil flows. The number of corrugations needed per transformer is a function of the rating of the transformer, and the amount of oil flow needed to keep the operating temperature within acceptable levels. Timco´s Square Corrugated Fiber, with corrugations perpendicular to the grain, possesses superior mechanical strength and maintains the height of the corrugations under pressure, allowing the proper amount of cooling oil to flow freely.

Tests have shown Timco´s Square Corrugated Fiber is compatible with transformer oil, and after aging gains compressive strength. Sinusoidal (rounded) or sinewave configurations tend to deflect as the load is increased, thus reducing the height of the corrugation and the amount of cooling oil that can be passed through. CVF provides excellent electrical performance. Its design and light weight saves assembly time, it eliminates radial and axial spacers and it stays securely in place. CVF can be cut with shears or scissors, and can be glued or taped.

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