The University of Southampton

Transformers and Reactors

We have experience of testing medium voltage and current transformers and our impulse generators can be adapted to meet most test waveform requirements. 


The preparation for testing of large and heavy equipment such as transformers can be time consuming and we will quote on a case by case basis.

Recently used standards

Number Name
BS EN 60289 Reactors
BS EN 60076-3 Power transformers Part 3: Insulation levels, dielectric tests and external clearances in air
BS EN 60076-4 Power transformers — Part 4: Guide to the lightning impulse and switching impulse testing — Power transformers and reactors
BS EN 60044-1 IEC 60044-1 Instrument transformers — Part 1: Current transformers
BS EN 60044-2 IEC 60044-2 Instrument transformers — Part 2: Inductive voltage transformers

If you are considering the testing of either a transformer, reactor or CT, please contact us and include the following information:

  • The relevant section of a standard or details of the test schedule that you wish to have performed;
  • If impulse testing, the winding impedances and required impulse parameters (peak voltage, rise and tail times);
  • The physical size and weight of the transformer/reactor;
  • Is a report/certificate required?