SPECIAL DRIVE HANDLES 350 TONNE CONVERTER

The Netherlands’ biggest steelworks, operated by Hoogovens Iron and Steel, presented Control Techniques with a challenge recently: to replace a 4,600A, 1.5MW d.c. drive for a 350 tonne tipping converter while retaining the existing thyristor stacks. Its response was a purpose designed four quadrant Mentor II d.c. drive controller with special splitter boards. The Mentor […]

The Netherlands’ biggest steelworks, operated by Hoogovens Iron and Steel, presented Control Techniques with a challenge recently: to replace a 4,600A, 1.5MW d.c. drive for a 350 tonne tipping converter while retaining the existing thyristor stacks.

Its response was a purpose designed four quadrant Mentor II d.c. drive controller with special splitter boards. The Mentor controls eight firing panels and includes speed overrides and torque limit.

Its eight d.c. motors are ramped up to full speed in two seconds and the tipping of the 10m diameter ceramic-lined crucible, which takes around a minute, is controlled by a nearby operator using a simple joystick.

{{Control Techniques,Tel: 01686 612900; Fax: 612999.355 on enquiry card}}