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Pressboard is produced from pure unbleached cellulose taken from long-fibred coniferous wood and manufactured by Hitachi Energy. Due to the high chemical purity, mechanical strength and optimum oil impregnability, 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 pressboard materials are used up to the highest voltage and current ratings in the market

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 11 kV up to 1,200 kV AC and 800 kV DC
  • Material excellence
  • Global footprint

Our offering

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