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Lignostone® Transformerwood®- for transformers

Lignostone® Transformerwood® is a laminated densified wood according to IEC 61061 for the construction of transformers that consists of beech veneers (Fagus sylvatica), which are joined together with thermosetting synthetic resins under pressure and heat.

Over the decades Lignostone® Transformerwood® has proven an indispensable construction and insulation material, particularly for power and distribution transformers.


  • good electrical insulation
  • very good oil absorption
  • low specific weight
  • withstands high mechanical loading
  • low- and high-temperature resistance
  • resistance to abrasion and wear

Common components made of Lignostone®Transformerwood® are:

  • Top and bottom coil clamping rings or multi-sectional pressure parts
  • Platforms
  • Pressure beams
  • Lead and cleat support
  • Step blocks
  • Shield rings
  • Potential rings
  • Pressure blocks
  • Fasteners

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