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Automated crane
January 1st 2008

WEG has supplied a full turnkey system including transformers, MV motors and MV frequency inverters to automate a large crane at the Usiminas steel plant in Brazil. The crane provides a 260-tonne lifting capacity on its main hook, and 40 tonnes on its auxiliary hook, while transporting molten steel at speeds of up to eight metres per minute.

The WEG system for the overhead crane includes the power supply at medium voltage (with transformer and cubicles at 3.3kV) and the supply to the WEG MVW-01 MV drives and M-Line range of motors.

The motors have been designed for this application and incorporate speed sensor (encoder) and independent forced ventilation.

More articles from WEG Electric Motors (UK) Ltd: