Difference between insulation paper and cable paper

Material Difference Insulation paper is a special paper made of pure wood pulp or mixed wood pulp, which has good in...

Material Difference

Insulation paper is a special paper made of pure wood pulp or mixed wood pulp, which has good insulation properties and is usually used as an insulation material for electrical equipment. Cable paper is made of high-quality pure wood pulp paper and is used as the insulation layer and isolation layer of the cable.

Definitions and Applications

Insulating Paper

Definition: A general term for paper-based insulation materials used to isolate electrical currents and prevent short circuits in electrical equipment.

Applications: Widely used in transformers, motors, capacitors, and switchgear for interlayer insulation, turn-to-turn insulation, or winding insulation.

Typical Use Cases: Oil-immersed transformer insulation systems, dry-type motor windings.

Cable Paper

Definition: A specialized type of insulating paper designed for cable structures, typically used to insulate conductors in power or communication cables.

Applications: Wrapped around cable conductors to provide electrical insulation and withstand mechanical stresses (e.g., bending, stretching).

Typical Use Cases: High-voltage power cables (e.g., oil-impregnated paper-insulated cables), insulation for communication cable cores.

Material Property Comparison

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Production Process Differences

Insulating Paper:

Light calendering for a rougher surface to enhance impregnation.

Some products include high-temperature-resistant coatings (e.g., polyester film laminates).

Cable Paper:

Precision calendering for uniform thickness and smooth surfaces to minimize partial discharge.

Tighter fiber alignment and lower porosity to prevent impregnation leakage.

Application Scenarios

Key Differences Summary

Specialization: Cable paper is a subset of insulating paper, tailored for cables to endure dynamic mechanical stresses; insulating paper has broader applications.

Mechanical Properties: Cable paper prioritizes flexibility and tensile strength.

Production Precision: Cable paper requires higher manufacturing accuracy and compatibility with cable impregnants (e.g., cable oil).

Environmental Adaptability: Cable paper must remain stable in oil-immersed, humid, or buried environments over long periods.

Relationship and Substitutability

Relationship: Both are cellulose-based and primarily serve as electrical insulators.

Substitutability:

Standard insulating paper cannot replace cable paper (insufficient mechanical performance).

Cable paper may replace insulating paper in static insulation scenarios but at higher costs.

Purchase suggestions

ZTelec Group is a professional manufacturer of high-quality electrical insulation materials, integrating the research and development, production and sales of electrical and electrical insulation materials. It has more than 65 years of manufacturing experience. The production capacity and market share of insulation materials are ranked top three in the industry, and special insulation materials are ranked first. Products are exported to Europe, America, Southeast Asia and other countries and regions.

If you need to know more about insulation paper and cable paper information , please contact us  we can mail you samples for your testing