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Multi-motor MV drives can handle 27MW

01 August, 2000

Multi-motor MV drives can handle 27MW

ABB has extended its family of medium voltage drives to cover ratings up to 27MW at voltages up to 3.3kV. The new ACS6000 range builds on the success of the smaller ACS1000, launched in 1997, which has helped ABB to capture more than a quarter of the global market for drives above 600kW.

Whereas the ACS1000 was designed as a standard range, spanning ratings from 315kW to 5MW and aimed largely at the retrofit market, the new family has a modular construction allowing it to be tailored for particular applications in the 6-27MW range. It is aimed mainly at new installations. Up to three inverters can be attached to the ACS6000 DC bus, allowing multiple drive configurations and with different types of motor - induction or synchronous - controlled by the same drive.

The new drive employs the same DTC (Direct Torque Control) technology and programming techniques used in ABB`s smaller drives. It also incorporates the IGCT (integrated gate commutated thyristor) power semiconductors pioneered by ABB in the ACS1000 and now used by other drives-makers, including Rockwell, GE and Ansaldo-Robicon.

ABB has spent $15m developing the ACS6000, which is aimed at applications such as marine propulsion, metals processing, and large pumps and compressors in the petrochemical sector.

ABB has started to sell electric motors via its Comp-AC Web site which has previously sold only low-power AC drives. Visitors to the site can choose whether they are interested only in drives or motors, or in both, and the site will direct them to the nearest suitable distributor. Initially the service will be available in the UK, France and Germany, but will be extended to all 29 countries with Comp-AC sites.

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