Von Roll institute

Pre­mier cen­ter of excel­lence for high-vol­ta­ge insulation


Our com­pe­tence cen­ter for high-vol­ta­ge insu­la­ti­on of rota­ting machine­ry is one of the worl­d’s lea­ding insti­tu­tes. It spe­cia­li­zes in the deve­lo­p­ment of electri­cal insu­la­ti­on sys­tems for motors, gene­ra­tors and transformers.

As part of our group­wi­de pro­duct deve­lo­p­ment, the insti­tu­te plays an important role in the design, qua­li­fi­ca­ti­on and long-term tes­ting for new pro­ducts. As an inno­va­ti­on part­ner, we sup­port lea­ding manu­fac­tu­rers in exter­nal pro­jects to deve­lop cus­to­mi­zed insu­la­ti­on systems.

A coope­ra­ti­on with us gives you access to our expe­ri­ence and know­ledge from over one hund­red years.


Our test methods — solid ground for your decisions


High-vol­ta­ge tests for extre­me stress — inclu­ding stan­dard-com­pli­ant documentation.


Phy­si­cal tests after ther­mal aging.


Enab­ling your electric vehi­cle to go fur­ther than others. Find out which mate­ri­als are ide­al for your electric drives.


Do you have spe­cial requi­re­ments? We sim­ply test it all for you — down to the smal­lest detail.

Our ser­vice — take advan­ta­ge of our know-how

Bene­fit from our uni­que exper­ti­se and expe­ri­ence: invol­ve our team in the deve­lo­p­ment of your insu­la­ti­on sys­tem at an ear­ly sta­ge — as con­sul­tants, coope­ra­ti­on part­ners and tes­ters. By deve­lo­ping inno­va­ti­ve and effi­ci­ent insu­la­ti­on sys­tems, we help you to stay one step ahead of your competition.


Tell us your spe­ci­fic requi­re­ments for high and low vol­ta­ge insu­la­ti­on sys­tems. We will respond with cus­to­mi­zed and ful­ly tes­ted insu­la­ti­on systems. 

Insu­la­ti­on trai­ning incl. e‑drive

In our trai­ning cour­ses you will gain a detail­ed over­view of insu­la­ti­on mate­ri­als and sys­tems for rota­ting high and low vol­ta­ge machi­nes. This inclu­des topics like selec­tion, pro­ces­sing and testing.


A look into the prac­ti­ce

Class H sys­tem of next generation

Gene­ra­tors will beco­me even more effi­ci­ent in future thanks to our new Sami­c­abond system.

Top sto­ry wind

Expan­ded capacities 

Our che­mi­stry labo­ra­to­ry in Ita­ly was new­ly equip­ped to incre­a­se capa­ci­ty for the deve­lo­p­ment of sta­te-of-the-art resins.

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Coil shop

Von Roll Ban­ga­lo­re beco­mes the most modern coil manu­fac­tu­ring cen­ter in India.

Press release

E‑Drive Test Lab 

The High-Vol­ta­ge Insti­tu­te opens a eDri­ve labo­ra­to­ry in Breitenbach. 

Press release

110 years Dolph’s

Foun­ded in 1910, the brand will cele­bra­te its 110th anni­ver­s­a­ry in 2020. This was publis­hed in the Electri­cal Appa­ra­tus maga­zi­ne. Curious?

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