Collett Delivers Transformers for Hyundai Electric UK with National Grid – Heavy Lift News
11 Apr 2024

Collett Delivers Transformers for Hyundai Electric UK with National Grid

Working on behalf of Hyundai Electric UK, in conjunction with National Grid, Collett has successfully delivered two 178t supergrid transformers from Tilbury Dock in Essex to National Grid’s Biggleswade substation in Bedfordshire.

Each transformer measured:

  • 9.0m long,
  • 5.4m wide
  • 5.0m in height
  • With a total combined length of 66m, with trailer

Collett utilised their 250t capacity Goldhofer girder bridge trailer to facilitate the movement of the two transformers to their final destination. The entire project took place over two weeks, with the transport occurring on two consecutive Sundays.

Prior to the transport, Collett’s Projects and Consulting Departments provided comprehensive planning and site visits to plan the total transport strategy. This included a comprehensive route survey, as well as swept path analysis reports, identifying obstructing street furniture that would require temporary removal. Collett liaised with both Cambridgeshire County Council and Central Bedfordshire Council to ensure that the movement would be successful.

With Collett having undertaken all ship chartering operations, the two transformers arrived at Tilbury Dock. Here, the first transformer was discharged from the vessel onto the girder bridge trailer where it was lowered onto stools in a secure storage area to await future transport.


The second of the two transformers was discharged directly onto the girder bridge trailer, in preparation for the first delivery.

With all preparation in place, Collett began the transport.


Collett had selected a 76 mile route from Tilbury Dock to the National Grid’s Biggleswade substation in Bedfordshire which took approximately 8 hours to complete.

The load was accompanied by Collett’s in-house escort vehicles as well as police escorts; initially being escorted by Essex police from Tilbury Dock, then handed over to Cambridgeshire Police at the county border.



Upon arrival at the site, Collett was responsible for offloading the transformer. Their detailed planning of this stage had included ground bearing pressure calculations, method statements, risk assessments and installation drawings, all of which led to Collett’s Heavy Lift Team utilising their heavy duty jacking and skidding equipment to skid the transformers directly from the trailer onto their final plinth.

With the first transformer successfully delivered, the girder bridge was de-mobilised and returned to Tilbury Dock to load the second transformer and follow the same route.

The two transformers are part of the 400kV substation needed to power the local area. The substation will initially boost power capacity by 80mW, allowing for future residential and employment growth in the Biggleswade area.




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