Three-phase asynchronous motor wiring is a very hot topic, then how to know the motor is star or triangle connection? In the selection of motor, the number of poles is a very important determining factor, then the number of poles on its selection?Here is a simple understanding with Senli Motor Xiaobian.
First, how to know the motor is a star/Delta connection?
The star connection method is connected at one end of the three-phase winding, and the other end is connected to the three-phase power supply, which is shaped like a letter.Y";The triangular connection is a three-phase winding connected end to end, forming a"△Shape, the top of the triangle and then connected to the three-phase power supply.
They have different phase voltages,General star connection motor rated voltage is220VThe rated voltage of the triangle connection is380V. The connection method is generally marked inside and outside the cover plate of the junction box, and different connections correspond to different power supply voltages.
Second, the effect of the number of poles of the three-phase asynchronous motor on its selection?
Motor currently available2/4/6/8Class motor, special purpose motor series may be higher. The more poles of the motor, the lower the speed of the motor, but the greater its torque;When selecting the motor, you should consider how much starting torque the load needs, for example, the load starting needs more torque than the no-load starting, if it is a high-power load starting, but also consider the step-down start or star triangle start.
As for the decisionThree-phase asynchronous motorAfter the pole number and the load speed matching problem, you can consider using different diameter pulley to drive or use change gear(Gear case)To match. If the power requirements of the load cannot be reached after the belt or gear transmission due to the determination of the motor pole number, it is necessary to consider the power of the motor.
Senli Motor,19Focus on the development and production of electric motors. Available if needed1688Search factory name "Shengzhou Chaoli Electric Appliance Factory" , Or online consultation message, we will have business personnel to get in touch with you, you can also contact us directly0575-8378-1127.