Products Description
Our Transformer Pressboard Insulation is manufactured from 100% high-purity unbleached sulfate wood pulp and specially processed for oil-immersed transformer insulation systems.
It is widely used as a structural and dielectric insulation material inside distribution transformers and power transformers.
Designed for long-term immersion in transformer oil, our pressboard provides:
-Excellent dielectric strength
-Superior mechanical rigidity
-Low moisture content
-High oil compatibility
-Long service life
Product parameters
| Property | Typical Value |
| Material | 100% Unbleached Sulfate Wood Pulp |
| Density | 1.0 – 1.3 g/cm³ |
| Dielectric Strength | ≥ 8 kV/mm |
| Moisture Content | ≤ 8% |
| Tensile Strength | ≥ 80 MPa |
| Oil Compatibility | Excellent |
| Thermal Class | Class A (105°C) |
| Thickness Range | 0.5mm – 80mm |
| Color | Natural Brown |
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We are a professional manufacturer for B2B, please contact us to get free samples !
Production process
Why choose us?
Manufacturer Place your order directly to the factory, no intermediate cost, more fast delivery ,better service and economical cost.
Strict QC inspection Good quality is top important during cooperation. We will make QC inspection strictly before ship out to make sure every piece stayed in a good condition. If any problems made by us after you received cases then we will full responsible to compensate you.
Stable Supply As a manufacturer with strong ability ,we have enough stock to meet your needs.
Fast delivery Enough stock in the warehouse, normal order can be delivery in 20-30days.
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