Current transformator

Low space requirement combined with outstanding performance

Current transformators from REO

For many years, REO has been active in the development, manufacture and optimization of current transformers and instrument transformers that are used in the widest variety of applications – e.g. metrology and control technology, control cabinet construction, motor-speed control and welding engineering.

As a member of different associations, REO is committed to comply with all relevant norms and certifications worldwide, as well as ensuring that products
are constantly developed to the latest state of the art. In addition and particularly in the domain of railway engineering, stringent requirements must be met in relation to external environmental effects (heat, cold, sand or moisture), resistance to shock and vibration, insulation design, and high loading capacity. These current transformers.

Low space requirement combined with outstanding performance

REO current transformers are particularly distinguished by their low space requirement, excellent linearity, fast response, and low iron and hysteresis losses.

Our current transformer designs are available for monitoring frequencies of up to 150 kHz and because of the tests performed before and during the production process (whether vacuum encapsulation, partial discharge measurements or high voltage testing) high reliability is ensured and are perfectly adapted to the application.

A broad spectrum of REO transformers for individual applications

A broad spectrum of current and voltage transformers from REO provide solutions for a number of applications – for simple current monitoring or working within frequency converters, main and subsidiary current monitoring, and for the efficient reduction of energy consumption. A variety of technologies, such as open loop and closed loop technology, and the measurement of currents ranging up to 3000 A, ensure that the application can be optimized by using a sensor from REO. Advantages:

  • REO’s flexible production strategy mean that small production quantities are possible
  • Individual solutions matched to your application
  • Modern core materials (nanocrystalline and amorphous) are used for the optimisation
  • UL-certified products
  • REO speaks your language: Our worldwide field sales offices always keep us close to our clients – no matter what your language, time zone, or currency. A REO location is near you, guaranteeing fast, efficient and cost-effective handling for your order.
  • Reliability thanks to tests:
    All our current transformers are checked against the following criteria:

    • phase shift between primarily and secondary
    • curve shape
    • saturation
    • core in relation to the winding
    • overcurrents and overvoltages
    • dynamic behaviour of the whole current transformer

REO current transformers


Active current transformers

REO current transformers are particularly distinguished by their low space requirement, excellent linearity, fast response, and low iron and hysteresis losses.


Passive current transformers

REO current transformers are particularly distinguished by their low space requirement, excellent linearity, fast response, and low iron and hysteresis losses.


Individual solutions

Are you looking for an individual solution? No problem! Our REO experts will be happy to answer any questions you may have.