Compact softstarter range reduces power loss
December 1st 2006

Reduced power losses and reduced heat build up are among the advantages of the new PSR compact softstarter from ABB. Designed for motor currents from 3 to 45A, and motor voltages of up to 600V, the compact version, complements ABB's existing PSS and PST ranges for applications from 3A to 105A.

The softstarter is available in three physical sizes and nine current ratings, with widths ranging from 45mm to 54mm,making it suitable for installation in confined spaces.

Ideal for pump, fan, mixer and conveyor applications, the PSR range is designed to minimise the impact of motor starting on the electrical network and prolongs the life of mechanical components.

PSR softstarters offer several indicator and control over motor starting and stopping.Two of the potentiometers can each be set to control motor ramp up and ramp down time, particularly helpful for pump applications,where the gradual slowdown of the motor is required to prevent 'hammering'. A third potentiometer enables the user to set the initial voltage of the PSR softstarter required to start a motor.

The PSR also benefits from having built in bypass contacts, which leads to reduced power losses whilst the motor is running at speed,and reduced heat build up.

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