The application of soft start the motor?

Widely used in coking production process equipment such as fan, water pump, and belt conveyor, generally need to directly under overloading starting motor, starting current is as high as 8 =; Times, power electric fan motor parts supply network voltage drop is too large, to be the impact of the driven equipment and control equipment failure rate is high. To solve the problem of high power motor start-up, generally USES the frequency-sensitive rheostat, since the lotus root transformer, B C % perkins diesel generator conversion and yanbian triangle startup mode, etc. But the traditional way of step-down start widespread starting equipment complex, small starting current and starting torque, etc. And the operation of the protection in motor, there are imperfect or insensitive. In recent years, with the development of power electronics technology and its related devices, three-phase asynchronous motor soft start technology has become increasingly perfect, and has been widely used. Soft starter is composed of microprocessor and high power thyristor, with microprocessor control thyristor conduction Angle, to control the output voltage. Therefore, the soft starter is actually can automatically control the step-down starter. Because you can adjust the output voltage and current closed-loop control, so be better than the series resistance and autotransformer such as traditional step-down starting way. 

And the failure rate is higher, the startup current impact on motor is extremely adverse. 3, soft starter start Soft starter starts, not only the operation is simple, and can be obtained from the motor initial starting torque, starting voltage can be increased. Selects the kick start function, can provide big promotion for motor torque, in order to overcome the inertia of load and quickly complete the boot process, the actual starting time of 261. By drum machine cold section in the practical application showed that the circulating water pump motor soft start technology not only can provide flexible start mode and excellent start features, can also provide soft start, soft start of belt optional kick start, current-limiting starting, double ramp up and started full pressure, etc. In addition, can provide various operations of protection, fault conditions directly read operation parameters www.dongfeng-motor.com of the motor, fault self-diagnosis function, with stepless regulating switch to eliminate the system of contact. Humanized menu interface can easily access or modify the parameters, to achieve centralized control through additional communication network interface. Also can effectively reduce the startup of mechanical stress, reduce the impact to mechanical transmission components.