Variable transformers / voltage regulators

AC sources for alternating current or three-phase current

Our transformers are used wherever a variable and stable AC voltage supply is required for testing, maintenance / repair or for the development of electronics and devices. Especially the design as an isolating transformer increases the electrical safety.


    • capacities from 800 VA to 60 kVA (larger capacities on request)
    • alternating current or three-phase version
    • with or without galvanic isolation
    • motor voltage regulation

Equipment options:

  • AC / DC switching
  • two-stage voltage switching
  • 3-phase single adjustment
  • digital interfaces
  • and much more

The AC sources from BETESO can be adapted to customer requirements on a test bench on request. Contact BETESO for advice on the possibilities.

On request we can provide you with our data sheets of the devices.

Stelltransformator mit Blick ins Innere

Configure product for inquiry

We will be pleased to provide you with an individual offer quickly and without obligation.

Please select the appropriate product category to access the configurator!

Variable transformers for alternating current

  • Single phase (1L)
  • 800 VA to 15 kVA
  • Fully electronically controlled
  • Galvanic isolation available
  • Common interfaces
  • Optional features

Variable transformers for three-phase current

  • Three-phase with or without neutral conductor (3L, 3L+N)
  • 2 kVA to 60 kVA (other sizes upon request)
  • Fully electronically controlled
  • Phases can be controlled individually on request
  • Common interfaces
  • Optional features