Solutions for water-cooled transformers and chokes

We develop electrotechnical components from the transformer to chokes and filters to turnkey switch cabinet complete solutions – tailor-made to your specific requirements.

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Water-cooled transformers and chokes

ISMET builds one-phase and three-phase transformers and chokes with open design and rated outputs of up to 3 MVA.

Tailor-made ISMET solution

ISMET built a three-phase transformer of the type DAW with an output of 3 MVA and three x 2,500 A. Direct water cooling configured for a pressure of 10 bar made it possible to reduce the size of the transformer.

One-phase transformers  Three-phase transformers  Chokes

The advantages of water-cooled ISMET solutions with energy-efficient cooling:


  • Use of innovative, newly developed cooling elements
  • Losses reduced by 10 – 30% in comparison with conventional cooling elements
  • Reduced increase of the coolant temperature and lower required flow rates
  • Realisation of smaller, more compact sizes for current levels of up to 2,000 A
  • Higher harmonics/switching frequencies made possible with simultaneously lower output losses than with conventional solutions
  • Reduction of total losses by 26%, reduction of losses in the cooling element by 73%

Market segments

Water-cooled transformers and chokes are used in machine construction,drive technology, plant construction, energy supply, induction furnaces and for power factor correction.

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The easiest way to find a suitable transformer, choke or filter for your application is to use our product filters. The filter settings, such as input and output voltage or IP code, allow you to select your individual parameters to find the right product from our extensive assortment.

By the way: You can use the contact form to contact our sales team to inquire about individual offers and custom solutions.

Discover our product filters:

Select transformers     Select chokes or filters

Do you have questions for us?

ISMET tailor-made solutions don't meet your requirements yet? We would be glad to help. We can work with you on a comprehensive solution according to your specific requirements.