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Dobeckan ® ST NV 075-4475

Dobeckan ® ST NV 075-4475

Electrical Insulation System

Impregnating Resin

Single component, thermal class 200

Dobeckan ® ST NV 075-4475 is a single component impregnating resin without solvents and reactive thinners like styrene and vinyltoluene, that combines rapid cure with excellent tank stability.

Dobeckan ® ST NV 075-4475 has been designed to give very high degree of resilience to absorb thermal and mechanical shocks, which make it an ideal impregnant for Class 'H' systems ( when used in conjunction with other suitable conductor and insulation products).

Dobeckan ® ST NV 075-4475 is classified as a non hazardous material, enabling simple transport, storage and handling.

The components fulfil the directives 2011/65/EU, 2003/11/EC and 2006/121/EC. The raw materials of the components are pre-registered according to the directive No. 1907/2006/EC (REACH). The system does not contain by recipe substances listed in Article 57/Anex XIV 1907/2006/EC from 9th October 2008 (SVHC).

Areas of application

Typical applications for Dobeckan ® ST NV 075-4475 are:

  • Motors
  • Generators
  • Transformers of different sizes.


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Dobeckan ® ST NV 075-4475


Properties of the cured resin

The fully cured material has very good mechanical and dielectric properties, in particular high bond strength, even at elevated temperatures. The cured material also displays good chemical resistance.

Due to the product’s thermal properties this resin type can be used for thermal class 200 acc. DIN EN 60085.

Viscosity / Gel Time

When delivered, the viscosity of the resin compound comes to 1000 ± 150 mPa.s. In tanks it should be regularly monitored and maintained within the recommended limits. A Tank Sample Testing is available upon request.
Processing methods

Dobeckan ® ST NV 075-4475 can be processed in all conventional impregnating plants used for the above mentioned applications, like dip, trickle and flood methods, and VPI (Vacuum Pressure Impregnation).

When using this resin system care should be taken to ensure the resin is not exposed to components with surface temperatures in excess of 40°C.

During storage and processing the resin compound should also be kept away from direct sunlight and other sources of heat.

Curing of the resin should be carried out with current or preheated convection oven. When the trickle or dip-roll process is used, rotation of the objects has to be continued until the resin compound has been gelled, to avoid imbalances.

The indicated curing times are valid after the object has reached the curing temperatures.

It is necessary to follow the instructions of the Material Safety Data Sheet (MSDS) for this product.