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Transformer insulation paper

ABB insulation paper is made from pure cellulose, which has very good mechanical strength, oil absorption and electrical resistance. Its high chemical purity means paper is an extremely good insulation material for electrical machines impregnated with resin, capacitors impregnated with oil or resin and particularly oil-filled transformers. 

 Why ABB?

  • 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


Product scope:

  • Compliant with IEC standards
  • Highest purity
  • Excellent oil impregnability
  • Mechanical strength
  • Low and predictable shrinkage factors
  • Electrical withstand strength in oil
  • Relative dielectric constant ε ~4.4 (value oil 2.2)
  • Insulation class A (105 °C)

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