Plastics for dry transformers

Operational safety and reliability of dry transformers is influenced by many factors. Constructors specifically need to consider the high operating temperatures and high dielectrical stresses. We offer composites specifically suitable for such requirements. They are characterised by high dielectrical and mechanical strength and meet the demands of heat categories F or H depending on material. This way, you can use our materials to construct long-lived and operationally safe dry transformers.

Your advantages

  • Very high operating safety
  • Long service life
  • Low-maintenance
  • High thermal resilience
  • High dielectrical and mechanical strength

Typical areas of application

  • Dry transformers
  • Distributor transformers
  • Special transformers

Product examples

Holders and spacers of Durostone® profiles

Parts made of Durostone® profiles, such as holders (figure) and spacers (Dogbones) for windings resist high mechanical, thermal and dielectric stresses and thus contribute to the construction of reliable and long-lived dry transformers. More about our Durostone® pultruded profiles

Pressure blocks

Parts machined from Durostone® sheets with narrow tolerances, such as pressure blocks (figure) combine high form stability with high mechanical and dielectric strength, thus offering a long service life. More about Durostone®


Iron core insulations and winding insulations

Iron core insulations and winding insulations made of Durostone® FHT with their high flexibility, thermal resilience and high dielectrical strength are particularly resilient and offer a very long service life. More about Durostone® FHT

Arrange technical advice

The performance and reliability of materials for dry transformers  are influenced by a variety of factors. These criteria need to be considered in order to make the right choice. Examples:

  • Usage temperature
  • Mechanical stress
  • Electrical stress
  • Meeting heat categories F or H
  • Construction conditions, dimensions and tolerances

We are happy to advise you on the selection of suitable materials for your particular application. Just use our contact form at the bottom of the page and write to us.


Direct Contact

  • 0 / 4500
  • You have the possibility to add files to your message The files have to be JPEG, PNG, PDF-documents or for 3D-Printing STP, STL, IPT. Please be sure that you only add files up to 8 MB

  • Privacy Policy

Electrical Industry
Röchling Industrial

Loading...