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Transformer insulation pressboard is an important material used in the insulation systems of oil-immersed transformers. It is primarily used for electrical insulation, mechanical support, winding separation, oil duct formation, and improving the reliability of the insulation system.
Electrical insulation pressboard is primarily made from high-purity cellulose fibers, typically using unbleached kraft wood pulp as the raw material. It is one of the most widely used solid insulation materials in oil-immersed transformers.
Main applications: Winding end insulation, interlayer insulation, insulating spacers, and support components.
Common keywords: Transformer insulation pressboard, electrical insulation pressboard, transformer insulating board.
High-density insulation pressboard features relatively high density, good mechanical strength, and dimensional stability. It is suitable for insulation structures requiring enhanced mechanical support.
Main applications: Winding supports, insulating barriers, and load-bearing insulation components.
Common keywords: High-density transformer pressboard, high-density electrical insulation board.
Molded insulation pressboard components are manufactured by forming or machining insulation pressboard into specific shapes. Products include not only flat sheets but also various customized insulation components.
Main products: Insulation rings, angle rings, end rings, spacers, barriers, and customized molded insulation components.
Common keywords: Machined transformer pressboard components, molded transformer insulation components.
Insulation pressboard can be cut or processed into strips and spacers to form oil ducts between transformer windings or within winding assemblies.
Main applications: Electrical insulation spacing, transformer oil circulation, and heat dissipation.
Common keywords: Transformer pressboard strips, transformer oil duct spacers, transformer insulation spacers.
| Product Type | English Name | Main Characteristics and Applications |
|---|---|---|
| Standard insulation pressboard | Electrical Pressboard | General-purpose cellulose-based insulation pressboard |
| High-density insulation pressboard | High-Density Pressboard | Higher density for structural support and electrical insulation |
| Thick insulation pressboard | Thick Transformer Pressboard | Used for thick-walled insulation components and support structures |
| Molded insulation pressboard | Molded Pressboard | Used for angle rings, insulation rings, and customized shaped components |
| Machined pressboard components | Machined Pressboard Components | Customized insulation parts manufactured according to technical drawings |
Note: These classifications are not mutually exclusive. A product may be classified as high-density, pre-compressed, or thick pressboard at the same time. Actual performance should be verified against the manufacturer’s technical data sheet.
Insulation pressboard is primarily used in the solid insulation systems of oil-immersed transformers. It can be manufactured into sheets, strips, spacers, and molded insulation components.
Diamond dotted paper features a surface coated with adhesive dots arranged in a diamond pattern. Under specified heating conditions, the adhesive dots soften or bond, helping secure the insulation layers.
This material is commonly used for interlayer or interturn insulation in transformer windings.
Crepe insulation paper offers good flexibility and conformability, making it suitable for wrapping transformer leads, conductors, and irregularly shaped insulation areas.
Electrical laminated wood provides good mechanical strength and electrical insulation performance. It is commonly used for transformer clamping plates, support components, and structural parts.
Unlike cellulose-based insulation pressboard, electrical laminated wood is a wood-based laminated insulation material.
ZTelec Group is a professional provider of transformer insulation materials and solutions. We offer a comprehensive range of insulation materials for oil-immersed transformers, including transformer insulation pressboard, electrical insulation paper, pressboard strips, insulation spacers, and molded insulation components.
Whether you are looking for transformer insulation materials or customized insulation components, contact ZTelec Group to discuss your requirements. Our team can recommend reliable, high-performance insulation materials based on your specific application and technical specifications.
Contact us online to submit your requirements and explore suitable transformer insulation solutions for your project.
