Power Transformers

As large industrial users of energy, ensuring that your power system is safe, reliable and efficient is paramount if your business is to run at an optimum level. Power transformers are a key component to your electrical network, and due to their use of higher voltages they need to be expertly installed, tested and managed throughout their service life.

Slaters Electricals can offer you a comprehensive range of power transformers for either purchase or hire. We can also offer an extensive range of associated services including installation, maintenance, and upgrades.

Primary Voltages up to 66kV

3150kVA to 35MVA

Environmentally friendly Midel & Midel ES filled available

Industry Leading Warranties

Bespoke custom designed transformers

If you would like to speak to us about Power Transformers please call:

+44 (0)191 414 2916

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Jersey Electricity – 35 MVA Upgrade Project


  • 35MVA Refurbished Transformer purchased to allow a 33kV system connection
  • Turnaround from order to installation on site was a matter of weeks
Jersey Electricity’s Chief Engineer John Duquemin said;
" Due to the loss of our first interconnector cable to France last June, Jersey Electricity had to increase our on-Island generation capacity quickly. When the project to acquire and install the two replacement 11MW Sulzer Diesel Gen Sets was conceived, we had planned to reuse a 30MVA Steam Turbine Gen Transformer for the step-up connection to the 33 kV system but this was needed to supply base load, hence we required a suitable 11/33kV transformer at short notice. The lead time for specification, tender and delivery on a new unit would have missed the requirement for generation from November 2012. After contacting a number of sources we found Slaters had a second-hand unit suitable for our needs. With a few modifications the unit was quickly overhauled, shipped and installed in Jersey just in time to allow us to connect and commission to take power from the Diesel Gen Sets in late November.Thanks to Slaters stock and timely engineering, the 22MW Diesel project was able to deliver flexible, efficient power to the customers in Jersey before the cold weather set in."