BF4 Rebuild VSDs

A steel company in Wales undertook the largest construction project in the UK in 2012 with the rebuild of their No4 Blast Furnace. Part of this project was the design, manufacture, supply, installation and commissioning of the transformers, drives, motors and control systems for:-

  • Stoves Combustion Air Fans
  • Cooling Tower Fans
  • Fume Extraction Fans

It is belived the 2.7MW Drives are the largest low voltage air cooled Variable Speed Drives in the UK.


The objective was to replace the direct on line starters with state of the art low harmonic variable speed drives, together with transformers and motors and included:-

  • Project Management
  • Hardware design
  • Manufacture of Drive Panels
  • Replacement of existing Motor starter with VS Drives (energy saving)
  • Motor replacement with new bedplates
  • Installation
  • Motor Control Centre Form 4
  • New Operator Stations
  • Containerised solution with air duct systems
  • Low Harmonic Drives below 600kW
  • Passive Harmonic Drives above 600kW
  • Commissioning