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Krempel electrical insulation materials for oil transformers

Krempel offers the right solution for all insulation applications in oil-filled power and distribution transformers and condensers. We guarantee outstanding processing characteristics, high functional reliability and optimum long-term durability. Impregnation with insulating oil or ester results in the perfect mix dielectric.

The reliability of oil transformers is heavily influenced by the quality of the insulation materials used. Both during production and in operation, these insulating materials must be able to reliably withstand a diverse range of mechanical, thermal, electrical, chemical and climatic stresses.

Insulation systems for oil transformers are comprised of a number of components: Pressboard in roll and sheet format, blockboard, corrugated board, ladder grids, ladder ducts and PREPREGS.

The main insulation materials used in the production of oil transformers are pressboards and components made from pressboard. As a company with almost 100 years of history in the paper and board industry, we are one of the world's leading suppliers of these materials. Our pressboards are manufactured with unique properties depending on the cellulose type, fibre preparation and the configuration of our paper machines.

Krempel offersthe suitable materials for all insulation applications in oil-filled distribution and power transformers:


1. Layer and winding insulation
2. Insulation cylinders and cooling channels
3. Outer bandage
4. Insulation for coil connections


A unique network of leading global suppliers in the field of power transformers

As member of this group, we develop and manufacture premium products for the Powertransformer insulation and strive to achieve the highest quality available on the market. Our aim is to provide the greatest possible operational reliability and we consider ourselves as leaders in service. Therefore, we establish market trends through innovation and share our knowledge to the advantage of our customers. TRANSFORM creates an international forum for exchanging information on sustainable solutions and transformer technology.


Since 2010, Krempel has been a member of the TRANSFORM network.

We offer a wide variety of solutions as well as the electrical insulation material appropriate to your oil transformers.

  • Presspaper (Insulating paper)
  • Diamond Dotted Presspaper (DDP)
  • Pressboard
  • KREMPEL corrugated board
  • Strips and duct spacers
  • Ladder duct made of presspaper and pressboard
  • Ladder grid made of presspaper and pressboard
  • Thread-reinforced polyester non-woven with epoxy resin impregnation
  • Crepe Paper Tubes

Contact - Electrical Insulation

Papierfabrikstrasse 4

71665 Vaihingen/Enz


Tel. +49 7042 915-0

Fax +49 7042 915-200


USt.Id.Nr.: DE 258 464 410

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