Single-phase AC motor
On this page, you find a selection of electric motors designed as single-phase motors in sizes of 63 -112 with powers of 0.18 kW, 0.25 kW, 0.37 kW, 0.55 kW, 0.75 kW, 1.1 kW, 1.5 kW, 2.2 kW, 3.0 kW and 3.7 kW.. Here, these AC motors are offered with operating capacitors and starting capacitors. In many cases, IEC AC motors are needed which are designed to match customer's individual requirements. In this respect, with our qualified personnel, our large stock of motors and our own final assembly, we are a perfect partner for businesses that need external expertise in a large spectrum of issues, whether it is a special 220V brake motor, circular saw motor, AC motor with a special shaft, specific supply voltage, single-phase motors with different degrees of protection, etc. Our focus is on premium quality, a competent team and a price that conforms to the market. If you do not find your 230 V motor here in our online store, please do not hesitate to contact.
Worm Gearbox with Single Phase Motor
The 230V motor
Our AC motors are offered with operating capacitors and starting capacitors. The version with two capacitors is designed for heavy starting. Basically, our AC motors can be operated with clockwise or anticlockwise rotation as required i.e. we provide a motor with operation in both senses of rotation. Changing the sense of rotation only requires a change in energizing current flow. For AC motors, the rated voltage has been changed from 220V to 230V. For three-phase motors, the rated voltage has been extended from 380V to 400V.
Bevel Gear with Single Phase Motor
How is the rotating magnetic field gererated?
At least two alternating voltages that are out of phase with each other need to be produced in the coils. When you use a one phase motor, you don't have three phases but only one phase from which current is drawn. That means a so-called auxiliary phase needs to be created. One of the two stator windings is fed by the single-phase supply; as the voltage produced in the second winding has to be out of phase with the first finding by 90°, a capacitor is connected in series with the second winding. That will give a phase shift on the second winding. The rotating magnetic field produced in this way would suffice to move the rotor, but it is dependent on the load and generates low torque. Hence, capacitor motors should start up to the rated speed with as little load as possible. The starting torque can be noticeably improved by intermittently connecting a so-called starting capacitor of 2-3times the size in series with the other capacitor which is energized only during the high-torque starting operation. Here it needs to be considered that the motor requires a starting current that is many times higher than the operating current at rated speed.
Parallel Shaft Gear with Single Phase Motor
Exactly speaking, the size of a capacitor can only be optimized for a single load case. When the capacitor is optimally dimensioned, approx. 65% of the mechanical power can be achieved in comparison to an asynchronous motor of similar construction with three-phase supply. Usually high-quality capacitors are used for the phase shifter i.e. the starting capacitor. The capacitance is typically 20µF per kW motor power. For heavy starting, the capacitance can be up to approx. 50µF/kW.
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