Bespoke transformers support major infrastructure projects
The first included the design, manufacture, and delivery of a custombuilt 500kVA 3PH 415V/690V transformer for one of the UK’s most significant infrastructure projects — the construction of Hinkley Point C nuclear power station.
Electro-Wind was entrusted with supplying a highly robust IP55-rated transformer, specifically engineered for external environments and designed for installation on a raised platform. The transformer now plays a crucial role in providing temporary power to the Unit 2 reactor polar crane during the commissioning phase.
One of the project’s greatest challenges was achieving the stringent IP55 protection rating while keeping the size and weight of the unit to a minimum. Electro-Wind’s engineering team overcame this by incorporating forced air cooling, ensuring complete compliance with environmental standards while maintaining exceptional performance and efficiency.
This specialist transformer is currently powering one of the largest land-based cranes in the world, a vital asset to the development of Hinkley Point C. Despite the project’s time-sensitive nature, Electro-Wind successfully delivered the unit within a demanding eight-week schedule, meeting all specifications precisely and on time.
The second project saw Electro-Wind support the delivery of the Woodsmith Mine project near Whitby, North Yorkshire, through the design, supply, and commissioning of specialist transformer solutions.
The customer required a comprehensive range of mining transformers to be custom-designed and manufactured to meet the specific demands of the project. The custom-built units included 10kVA single-phase transformers, 3.3kVA threephase transformers with various voltage ratings, and multiple 1MVA three-phase transformers. These transformers will be used to power lighting systems and a wide array of machinery across the mining site.
In addition to the typical constraints related to time, size, and weight, the engineering team had to carefully address factors such as thermal management, ventilation, humidity control, and strict compliance with mining regulations.
Construction of the Woodsmith Mine tunnel commenced in 2016, with tunnel boring operations beginning in 2019. Upon completion, the 23-mile underground conveyor tunnel will be the longest of its kind in the UK, engineered to transport between 10 and 20 million tonnes of polyhalite each year to Teesside for processing and export.
In addition to meeting the rigorous technical requirements of this landmark development, Electro-Wind has supplied solutions designed with energy efficiency and sustainability at their core. By optimising performance and reducing energy losses, the company's transformer technology contributes to lowering the project's long-term environmental footprint – supporting both operational resilience and the broader transition to more sustainable industrial practices.
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This article appeared in Renew magazine. To read more or request your personal digital or print edition of Renew, click here.
