Medium-voltage technology

Medium-voltage technology

Medium-voltage technology

As a system provider, our range of services extends beyond low-voltage to 1000 V and above. We plan and deliver medium-voltage systems, transformer stations and substations or power stations up to 35 KV. We deliver a customised, turnkey system. Compact transformer stations are built by SONN in a factory specifically built for series production. Prefab buildings and special containers up to 40 tons can be manufactured and tested in this factory. We also design, deliver, and manufacture transformer stations in existing buildings, concrete buildings and metal-clad special plants.

We supply and assemble:

  • Compact stations as inaccessible buildings
  • Walk-in transformer stations as a single or multi-chamber building
  • Medium-voltage plants (SF6 or air-insulated)
  • Oil-filled transformers
  • Cast resin transformers
  • Sona low voltage systems
  • Testing service up to 35 KV
  • Oil analyses
  • Maintenance and servicing
  • Sealing of transformers, conversion and repairs

To create the necessary power supply connections, our specially trained staff can perform all types of connection and terminations for new installations or repairs quickly and at short notice. The well-stocked warehouses of the SONN Group avoid long periods of downtime for our clients.

To complete the range of medium voltage technology, we have a complete rental service. On our “” site, our clients can rent any required medium-voltage equipment:

  • Transformers
    • Primary voltage: 5, 6, 10, 11, 15, 20, 24 KV
    • Secondary voltage: 120/208; 230/400V; 500V; 690V; 1000 V; 5000 V; 6000 V
    • Output: 50 KVA to 2000 KVA
  • Medium voltage switchgear
  • MV measuring fields
  • MV-converters
  • MV circuit-breakers
  • Rental transformer stations
  • Rental transfer stations
  • Rental compact transformer stations
  • Rental switchgear building (Powerhouse)
© 2014 by Sonn Elektrotechnik GmbH Handcrafted by creartix design studio
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