1. the effective start of the decrease in the impact, vibration, thereby protecting motor.
2. effective overload protection, to protect the motor and machine work. Reduce mechanical damage.
3. in multi-drive system, effectively balance the electrical load.
4. the start-up can improve the electrical capacity to shorten the motor start-up time, reduce the impact grid.

 
Use:
Mainly used in the mining, metallurgical, cement, chemicals, construction, building materials, electric power, telecommunications, textiles, and transportation departments.
Such as:
Conveyor: Belt conveyor.AFC conveyor.Chain conveyor.Screw conveyor.
Pump: Water pump, oil pump, slush pump,etc
Fan: Draft fan,,fanner, boiler fan,etc
Excavator: Bucket excavator. Bucket wheel excavators.Bucket wheel stacker reclaimer.
Crane: Tower crane.Gantry crane.Bridge crane.
Others: Various elevators.Coal plough.Ball mill.Crusher.Recreation machine.
Blender equipment.Centrifuger.Washer.Leather-making machine.machine for
recreation park mixer wire drawing machine.Extruder,dregs crusher of boiler.
Plastic feeder.Rubber smelling machine.etc.