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: | 
