Our transformer insulation pressboard support strips are manufactured using highly refined and purified insulating pressboard to ensure excellent performance in electrical applications. The material is carefully processed to achieve uniform thickness and is free from pinholes, undispersed fiber bundles, and other microscopic defects. This meticulous production process guarantees consistent quality and reliable insulation properties for your transformer applications.

The main types of Pressboard Support Strips:

R-Chamfered Support Strip / Radius Edge Support Strip

Non-Chamfered Support Strip / Square Edge Support Strip

Right-Angle Edge Support Strip



Applications and Functions of Insulation Support Strips:

â??Oil-Immersed Transformers:

Winding Fixation: Work together with upper and lower positioning rings and columnar spacers to create a robust mechanical support system, preventing winding short circuits or deformation.

Cooling Optimization: The spacing between insulation support strips directly influences oil flow. Elongated hole designs (e.g., 20-30 mm spacing, 5-8 mm diameter holes) increase the heat dissipation surface area.

Dry-Type Transformers:

Utilize high-temperature-resistant materials (e.g., Class F, 155C) to avoid softening or deformation under thermal stress.

â??Special Scenarios:

High-Humidity Environments: Employ anti-hygroscopic materials such as polyimide composites.

High-Frequency Transformers: Optimized dielectric properties help minimize partial discharge risks.