●Product Introduction
The core function of the Starting Adjustable Resistor Cabinet is to address the issues of high inrush current and mechanical shock generated during the direct startup of medium to large electric motors. By connecting an automatically and smoothly decreasing resistance in series with the motor circuit, it limits the starting current, reduces impact on the power grid, and enables smooth acceleration of mechanical equipment. This protects the motor and connected devices, thereby extending their service life.
●Core Product Function
1.Limits the starting inrush current
It reduces the starting current from 5-8 times the rated current during direct startup to 1.3-3.5 times, protecting the motor windings and upstream electrical equipment.
2.Reduces impact on the power grid
It effectively suppresses bus voltage sags caused by high current, thereby preventing malfunctions in other equipment within the same power grid.
3.Enables smooth acceleration of mechanical equipment
It achieves a smooth torque ramp-up, thereby eliminating mechanical shock on the drive train (gears, belts, load).
4.Protects the motor and connected equipment, extending service life
It integrates to reduce both electrical and mechanical stresses, thereby significantly extending the service life of the entire drive chain, including the motor, gearbox, and other components.
●Product Applications
•High-inertia load equipment: Such as ball mills and fans, where the load has an extremely high moment of inertia, requiring sustained and smooth torque to gradually accelerate to the rated speed.
•Heavy-duty starting equipment: Such as crushers and rolling mills, which start under heavy load and require the starting equipment to provide sufficient and controllable starting torque.
•Scenarios sensitive to grid impact: In plants with relatively limited grid capacity or situations where the stability of other precision equipment must be ensured, the starting current must be restricted.
•Equipment with frequent start-stop cycles: For machinery that requires multiple starts and stops daily or weekly, a soft-start system cansignificantly
extend the fatigue life of the motor and mechanical components.
About the Factory
By choosing us, you are selecting not only high-quality products, but also professional solutions and ongoing technical support.
Contact us now to request exclusive product materials, technical proposals, and quotations. Let us customize the most cost-effective and efficient motor starting solution for you!
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