Semiconductor Black Crepe Paper E Class

Semiconductor Black Crepe Paper

Semiconductor Black Crepe Paper is a semi-conductive insulation material designed for electrical field control and shielding applications in transformers, cables, and high-voltage equipment. Manufactured from high-quality crepe paper treated with conductive carbon-based compounds, this material combines flexibility, electrical performance, and compatibility with oil-impregnated insulation systems.

It is widely used in oil-immersed transformers, high-voltage cable systems, and other electrical insulation structures where controlled surface resistivity is required.

Material and Structure

Semiconductor black crepe paper is produced from:

• High-grade creped electrical insulation paper

• Uniform carbon-based semi-conductive coating

• Flexible, stretchable crepe structure

The crepe design allows excellent conformability around conductors and irregular shapes, while the semi-conductive layer ensures stable electrical field distribution within insulation systems.

Main Technical Parameters:

• Thickness: 0.05mm, 0.08mm, 0.13mm etc

• Conductivity: Stable semiconductor properties, precisely controlled surface resistivity

• Color: Standard black (for easy installation identification and quality control)

Key Features:

1. Electric Field Equalization and Control: The unique semi-conductive layer effectively evens out the electric field intensity between insulating layers, suppressing partial discharge and making it an ideal material for solving electric field concentration problems.

2. High Purity and High Oil Absorption: The material is pure, free of conductive impurities, and exhibits excellent wetting and oil absorption capabilities for insulating oils (mineral oil, silicone oil, ester oils, etc.).

3. Excellent Dielectric Strength: While providing semiconductor functionality, it maintains the inherent high dielectric strength of crepe paper.

4. Excellent Compatibility: Fully compatible with various insulating liquids (mineral oil, silicone oil, synthetic esters), maintaining long-term stability.

Why Choose Semiconductor Black Crepe Paper?

Compared with standard insulation paper, semiconductor black crepe paper provides controlled conductivity while maintaining flexibility and oil compatibility. It is designed specifically for high-voltage transformer and cable insulation systems where electric field management is critical.

Semiconductor black crepe paper, by combining reliable mechanical adaptability, excellent insulation performance, and precise semiconductor functionality, has become an indispensable key material in the design of modern high-performance power equipment, providing a solid guarantee for improving the safety and lifespan of the entire power system.

FAQ

Q1:What is semiconductor black crepe paper used for?
A:It is used for electric field control and semi-conductive shielding in transformer and cable insulation systems.

Q2:Is black crepe paper conductive?
A:It is semi-conductive, meaning it provides controlled surface resistivity rather than full conductivity.

Q3:Can it be used in oil-immersed transformers?
A:Yes, it is compatible with oil-impregnated insulation systems.

Related Transformer Insulation Materials

Semiconductor black crepe paper is used for electric field grading.

For primary dielectric insulation in transformer windings, see our electrical grade insulation crepe paper for transformers.