U is the main line, V is the starting line, and Z is the centrifugal switch. Single-phase asynchronous motor A rotating motor powered by a single-phase AC source with a single-phase stator winding. When the single phase AC is connected, it will produce an alternating pulsating magnetic field in the fixed rotor air gap, so the single phase asynchronous motor cannot start itself. In AC motor, when the stator winding passes through AC current, the armature magnetomotive force is established, which has great influence on the energy conversion and operation performance of the motor. Therefore, single-phase AC winding passes into single-phase AC to generate pulse magnetomotive force. The magnetomotive force can be decomposed into two rotating magnetomotive forces with equal amplitude and opposite speed, so as to establish the vertical and reverse magnetic field sums in the air gap. These two rotating magnetic fields cut the rotor conductor and generate an induced electromotive force and an induced current in the rotor conductor, respectively. This current interacts with the magnetic field to produce positive and anti-electromagnetic torques. Forward electromagnetic torque attempts to turn the rotor forward; Reverse electromagnetic torque attempts to reverse the rotor. The combination of these two torques is the resultant torque that drives the motor. Before the motor is installed, the insulation resistance between the stator winding and the case and between the main winding and the auxiliary winding should be measured, and the resistance value at normal temperature should not be less than 10MΩ, otherwise the winding should be dried and the lamp heating method can be used. The shaft extension diameter of the motor has been ground to the standard tolerance size at the factory, so the user is required to select the national standard accessories for the inner diameter of the pulley or other supporting parts. During installation, push or gently tap the shaft extension table by hand. It is strictly prohibited to hit the shaft with a hammer, otherwise it is easy to vibrate the centrifugal switch, causing the motor to not start, damage the bearing, and increase the operating noise of the motor. Before the motor is installed to the supporting machinery, it is necessary to carefully check whether the foot part of the motor has cracks and affects the mechanical strength and other problems, once the problem is found, it is prohibited to install and use. The motor shall be mounted on a flat plate with fixed holes and fixed with bolts suitable for the foot holes. In order to ensure safety, before the motor runs, be sure to connect the grounding wire to the grounding screw of the motor, and ground reliably, the grounding wire should be selected with a cross-sectional area of not less than 1m square meters of copper wire.
U is the main line, V is the starting line, and Z is the centrifugal switch. Single-phase asynchronous motor A rotating motor powered by a single-phase AC source with a single-phase stator winding. When the single phase AC is connected, it will produce an alternating pulsating magnetic field in the fixed rotor air gap, so the single phase asynchronous motor cannot start itself.
In AC motor, when the stator winding passes through AC current, the armature magnetomotive force is established, which has great influence on the energy conversion and operation performance of the motor.
Therefore, single-phase AC winding passes into single-phase AC to generate pulse magnetomotive force. The magnetomotive force can be decomposed into two rotating magnetomotive forces with equal amplitude and opposite speed, so as to establish the vertical and reverse magnetic field sums in the air gap.
These two rotating magnetic fields cut the rotor conductor and generate an induced electromotive force and an induced current in the rotor conductor, respectively.
This current interacts with the magnetic field to produce positive and anti-electromagnetic torques.
Forward electromagnetic torque attempts to turn the rotor forward; Reverse electromagnetic torque attempts to reverse the rotor.
The combination of these two torques is the resultant torque that drives the motor.