1. features:

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.

2. 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.

 3.The parameter