Is the squirrel-cage motor communicating in three phases?
The small and medium squirrel cage asynchronous motor can be directly started directly, the direct starting equipment is simple, the method is simple. But the starting current is large and the torque is small. Large capacity of squirrel-cage asynchronous motor starting, generally adopt the method of reduce the voltage of the stator winding step-down starting, can reduce the starting current, but also inevitably reduces the starting torque. Various step-down starting way is as follows: step-down starting starting star Angle conversion starting method since the coupling compensation Yanbian triangle starting voltage starting voltage drop coefficient is 0.577 times the rated voltage 0.78 * * rated voltage depends on the stator winding tap voltage rated voltage starting current voltage drop coefficient multiplied by the starting current (straight) a third * starting current (straight) depends on the stator winding tap voltage 0.6 * (straight) starting torque starting current multiplied by the square of the voltage drop coefficient * starting torque (straight) a third * starting torque (straight) depends on the stator winding tap voltage 0.6 * starting current (straight) starting method of characteristics Motor stator winding through autotransformer step-down starting, starting after removal of the autotransformer motor stator winding into a star, when starting or changed into triangles When the starter motor stator winding connect yanbian triangle after starting or changed into advantages and disadvantages of 1 small starting current
The rodent motor can only show that his rotor is a mouselike, although it is an alternating current, but it does not indicate that it is a three-phase alternating current, or single phase alternating current. This depends on the winding and wiring of the stator winding of the motor. The three-phase motor is composed of three-phase winding, which usually leads to six terminals, delta connection and star connection. The individual also has a three lines after the inside of the line. A single phase motor is composed of two phase winding, which is divided between the main and the radial winding. The combination of the external capacitance and the radial winding is used to generate the rotating field. An electric motor is also a single phase, typically consisting of a winding, which relies on a short circuit ring on a pole shoe to form a rotating magnetic field. Be sure to distinguish between the use and the other
The starting mode of the squirrel-cage asynchronous motor includes direct starting and reducing voltage starting. The lower pressure starting includes the starting of the lotus root compensation, the starting of the star Angle, and the starting of the yanbian triangle.
