Green Smooth Surface Electrical Insulation Board for Transformers - 1-2.5m Length, ≥35kV BDV Rating

High-performance electrical insulation board featuring vacuum injection epoxy pultrusion construction. Offers ≥35kV parallel BDV and ≥14.2kV/mm vertical BDV in oil at 90°C. Ideal for transformers, switchgear, and industrial applications with excellent dielectric properties and chemical resistance.

Vertical BDV ≥14.2kv/mm In Oil Of 90℃
Dielectric constant ≤5.5
Place of Origin China
Shape Rod/I Type/corner
Packaging Details pallet
Color Green, Yellow, Red etc.
Product Description
Product Overview

This green smooth surface electrical insulation board delivers exceptional dielectric performance for high-voltage transformer applications. Manufactured using vacuum injection epoxy pultrusion technology, it provides superior insulation protection in demanding industrial environments.

Key Electrical Properties
  • Parallel BDV: ≥35kV in oil at 90°C
  • Vertical BDV: ≥14.2kV/mm in oil at 90°C
  • Dielectric constant: ≤5.5
  • Dielectric loss factor: ≤0.04
  • Water absorption: ≤0.05%
Technical Specifications
Parameter Specification
Material Composition Unsaturated Polyester/E-class Glass Fiber Yarn
Density 1.8-2.0 g/cm³
Available Lengths 1m or 2.5m (Customizable)
Available Shapes Rod, I-Type, Corner
Color Options Grey or White
Thermal Class F, H
Performance Advantages

This insulation board withstands extreme temperatures, moisture, and harsh environmental conditions while maintaining excellent electrical insulation properties. Its smooth surface ensures minimal defects and easy workability for precise installations.

Primary Applications
  • Transformer bracing and insulation
  • Switchgear components
  • Power plant equipment
  • Industrial motor and generator insulation
  • Automotive and aerospace electrical systems
Customization Options

Available in dog bone model configuration with flexible customization including specific dimensions, thermal classes (F, H), and tailored electrical properties to meet your project requirements.

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