Building technology

Regulating transformers and mains voltage stabilisers from ISMET also ensure stable current supply in building technology. We build electromechanical mains voltage stabilisers with rated outputs of up to 800 kVA to customer-specific requirements in one-phase and three-phase versions with common or separate regulation of the phases.

They compensate voltage fluctuations of ± 25% and have an output tolerance of ± 1.5%. Regulating transformers for room lighting control are an important component of building technology and are provided by ISMET with a rated output of up to 120 kVA. Whether one-phase or three-phase, in toroidal or column design, with separate or autotransformer winding – ISMET offers the complete spectrum of regulating transformers. Depending on the local circumstances, the regulating transformers for room lighting control in building technology are equipped with manual or motorised operation and in an open design or in a housing with protection rating of up to IP54.
Motorised versions can be equipped with an AC drive or DC drive. A version with different regulating times is also available.


In the building technology market segment, ISMET customer-specific solutions such as mains voltage stabilisers and regulating transformers, among other things, can be used.

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Mains voltage stabilisers

  • Rated outputs of up to 800 kVA
  • One-phase or three-phase
  • Common or separate regulation of three-phase devices
  • Compensation of voltage fluctuations of ± 25% and an output tolerance of ± 1.5%
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Regulating transformers

  • Rated output of up to 120 kVA
  • One-phase or three-phase
  • Toroidal or column design with isolated or autotransformer winding
  • Open design or in housing with protection rating up to IP54
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Energy-efficient transformers and chokes

  • Cost-optimised production
  • Use of a variety of materials
  • Reduction of losses by up to 65%
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Do you have questions for us?

You have not found a suitable solution for your market segment? We would be glad to help. Together we can work on a tailor-made solution that meets your requirements and wishes.