Electrical switching & drive systems & components


Taking soft-starters to the next level

Second Quarter 2021 Electrical switching & drive systems & components

The new WEG SSW900 soft-starters are the ideal choice for complete motor control and protection. These units allow quick and simple access to application information and configuration settings in any installation throughout a wide range of industrial segments where a three-phase induction motor needs to be controlled.

With its well structured menu interface, they give users a new level of interactivity, including Bluetooth connectivity, providing event logs with dates and times, as well as setup and programming assistance. The built-in bypass extends the lifespan of the units, optimising space and reducing heat dissipation inside electric panels. This built-in bypass functionality also extends throughout the WEG soft starter product range, up to 1400 Amps.

By allowing the smooth acceleration and deceleration of motors by controlling the voltage, soft-starters greatly reduce mechanical stresses on couplings and transmission devices during the startup of a motor. In pumping applications, the smart control prevents water hammer and pressure overshoots in hydraulic piping.

Available in current ranges from 10 to 1400 A – and for supply voltages from 220 to 575 V AC – the soft-starters can operate at ambient temperatures of up to 55°C without current derating. They can substitute direct online starters or star-delta starters. Benefits include savings in electricity, as well as greater protection and increased durability of the electric motor. Users also have access to diagnosis and fault history. Graphic monitoring and customisable main screens provide further convenience.


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