Three phase electric motors

General information

 

Three-phase asynchronous electric motors are typically made for industrial, agricultural use. Their operation requires 400V 50Hz electricity on 3 phases. The size of the electric fuse must be capable of delivering at least the ampere power indicated on the motor data plate. (Three-phase electric motors can also be operated from a single phase, as long as indicated by the junction box on top of the motor. In this case, the engine power is significantly reduced compared to the rated power!)

 

 

In all cases, the electric motors must be connected as indicated in the description of the electric motor and/or on the junction box. For proper use, it is essential to use a motor protection switch or frequency converter.

The three-phase asynchronous electric motors range from approx. 0.1 kW to the starry sky. If you cannot find the product you need, please contact us via the CONTACT menu item.

 

What does 3 phase motor mean?

3-phase electric motors include three windings. Under operating conditions, a rotating magnetic field is created that moves the rotor. The speed of the magnetic field is different from the speed of rotation of the rotor, so they are also called asynchronous motors. Because of its principle of operation, it is also called an induction motor. Asynchronous induction motors draw a lot of current when starting and have less torque when starting. Therefore, these engines were previously started using a star-delta switch. The switch changed the electrical wiring of the motor. Nowadays we use electronic devices, usually frequency converters, when starting the electric motor.