The SI-DN is a highly sophisticated and reliable three-phase motor soft starter designed for use with standard three-phase, three-wire and six-wire, squirrel cage induction motors. It provides the best method of reducing current and torque during low voltage motor starting in the most demanding applications and operate under severe conditions, such as those in Marine and Mining installations. Advanced features such as pump control, slow speed, and electronic reverse and enhanced motor protection make it one of the best and most popular soft starters in the industry.
This heavy-duty three-phase soft starter starts the motor by supplying a slowly increasing voltage to the system. This provides a soft start and smooth, stepless acceleration while drawing the minimum current necessary to start the motor.
The third generation, microprocessor based digital control provides unique features like pump control, slow speed, electronic reversing, and accurate motor protection.
Soft start and soft stop
Soft, stepless acceleration & deceleration
Torque & current control – for optimized acceleration and deceleration
Pump control program
Dual adjustment – two start/stop characteristics
Slow speed with electronic reverse
Comprehensive protection package
Shear pin (jam) with adjustable delay
Electronic overload with selectable curves
Phase sequence and Under/Over frequency
Load loss (motor not connected)
Starter over temperature protection
Motor insulation test (option)
Motor thermistor (option)
When using “Preparation for Bypass” all protection remains active
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