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.
Features:
- 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.

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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