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Output booster for Alcoa

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AS part of its Pinjarra refinery efficiency upgrade, Alcoa World Alumina Australia has contracted Rockwell Automation Australia to provide 12 variable speed drives (VSD) for new mud transport pumps, to be installed throughout the plant.

The Pinjarra upgrade aims to improve throughput by around 600,000 tonnes of alumina per annum.

The PowerFlex 7000 medium voltage VSDs with Direct-to-Drive technology are being installed at a rate of two per month over six months, starting in February 2005.

Eight 500 kW and four 355 kW PowerFlex 7000 3300 volt VSDs are being installed for three different types of applications: mud-to-washer transport pumps, mud booster pumps and repulp tank pumps.

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