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Eaton Extends DS7 Softstart Range to 200A

14 October 2011

Following the success of its DS7 soft starters, which combine smooth starting with freedom from vibration, Eaton’s Electrical Sector has now extended the range to include versions with ratings of up to 200A. With these new additions, the DS7 range now covers all requirements from 4A to 200A, for supply systems from 200V to 480V.

DS7 soft starters can be supplied for use with control voltages of either 24V ac/dc or 110 to 230V ac, and all types fully meet the requirements of the IEC/EN 60947-4-2 soft starter product standard. Versions with an integrated interface for SmartWire-DT, which virtually eliminates the need for conventional control wiring in panels, will be introduced in the near future.

All Eaton DS7 soft starters, including the new high power versions, incorporate the company’s patented asymmetrical trigger control technology, which eliminates the dc components in the motor current that are produced by conventional two-phase controlled soft starters. This means that the motor starts more smoothly and with less vibration, and that the start-up times can be minimised. The performance of DS7 soft starters is therefore fully comparable to that of bulkier and more costly three-phase controlled soft starters.

Eaton’s space-saving DS7 soft starters offer an alternative to conventional star-delta starters in a wide range of applications, such as pumps, where their ability to eliminate water hammer reduces wear on the whole installation; fans, where they reduce wear on drive systems; and conveyors, where smooth starting and vibration-free operation not only minimises equipment wear but also the risk of product damage.


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