Electrical insulation – individual and custom-fit



are flexible multi-layer insulating materials that are produced by bonding foils, nonwovens and papers. The combination of the different surface insulating materials creates the finished product, which combines the technical properties of the base materials and can also bring economic advantages. We can offer you multi-layer laminates.

We distinguish in several insulation classes:

Class H (180 degrees) : Class F (155degrees) : Class B (130 degrees)

Electrical insulating materials for generator construction and winding industry

Electrical insulating materials have a high specific electrical resistance (min. 1010 Ω-cm) and are non-conductors. Furthermore, they are characterised by a high dielectric strength and a low water absorption capacity. Depending on the area of application, further requirements are mechanical strength and resistance to environmental influences.

Important properties are high tracking resistance and thermal load capacity. The thermal load capacity is indicated by insulation material classes.

In contrast to electric current, electromagnetic fields (depending on frequency and wavelength) can penetrate insulating materials to varying degrees, so if these are not desired, cables must be additionally shielded. One of the first technically used electrical insulating materials in the mid-19th century was gutta-percha, the dried milk sap of the gutta-percha tree native to the Malay region, which was used in the area of the telegraph lines that were being built at the time.

The most commonly used insulating materials today are plastics (thermosets, thermoplastics, elastomers)