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Transformer Insulation Pressboards

The transformer insulation pressboard is produced from pure unbleached cellulose taken from long-fibered coniferous wood and manufactured by Hitachi Energy. Due to the high chemical purity, mechanical strength, and optimum oil impregnability, the pressboard is primarily used in oil-filled power transformers and distribution transformers and is suited as an insulation material for electric machines and capacitors.

Hitachi Energy transformer insulation pressboard materials are used up to the market's highest voltage and current ratings.


Why Hitachi Energy

  • More than 150 years of experience in insulation
  • Complete range of insulation products for liquid-filled transformers; comprehensive range for dry-type
  • Complete range of insulation products for transformers from 11kV up to 1,200kV AC and 800kV DC
  • Material excellence
  • Global footprint

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