A shaded pole induction motor is a basic single-phase induction motor that is self-starting, characterized by one of its poles being partially enclosed by a copper ring. This copper ring, also known as a shading ring, functions as a secondary winding within the motor. The motor is designed to rotate in a single direction, and reversing the direction of rotation is not possible. Due to the motor’s design, it experiences high power losses and operates with a low power factor. Consequently, the motor has a low starting torque, leading to poor overall efficiency and limited power output. As a result, shaded pole motors are typically used in applications requiring low power.
Shaded Pole Motor Construction
The motor’s construction features two poles, as illustrated in its basic design. It consists of a stator and a rotor, with the rotor being of the cage type. The stator includes the main poles, which are also referred to as projected poles. These main poles are equipped with supply windings that form the motor’s primary winding. The poles are divided into two unequal parts, with the smaller section containing a copper band, also known as a shading coil. This shading coil is placed on the smaller portion of the pole and is referred to as the shading pole, which plays a crucial role in the motor’s operation.
Main Features:
Shaded pole motors operating on AC voltage are commonly used in low-power applications. They are typically designed for single-phase AC supply and are best suited for continuous operation with low starting torque. Key characteristics include:
AC Voltage Range: Typically operates on standard AC voltages such as 120V or 240V, making them compatible with a wide range of applications.
Applications: Used in small fans, blowers, range hoods, and other ventilation systems where low power and continuous operation are required.
It produces starting torque that equals to half of the torque on full load
Efficiency is low due to power loss in the shading coil.
Depending on the shaded coil position, the direction of rotation depends.
Simple Design: Shaded pole motors have a straightforward construction with fewer moving parts, making them highly reliable and easy to maintain.
Low Cost: Due to their simple design, these motors are among the most cost-effective options available, making them ideal for applications where budget constraints are important.
Compact Size: The small footprint of shaded pole motors allows them to be used in space-constrained environments, where larger motors would be impractical.
Quiet Operation: Shaded pole motors operate quietly, which is essential for applications in household appliances and small ventilation systems.
Mainly Applications
The applications of the shaded pole motor include the following.
- Relays, fans and other small devices due to its low cost
- Exhaust fans
- Hairdryers
- Table fans
- Cooling fans
- Refrigerators
- Air conditioners
- Projectors
- Record players
- Tape recorders
- Photocopying machines and many more.
YZseries shaded pole motors
Insulation Class: B/F/H
Type: AC Shaded Pole Motor
Bearing Type: Ball bearing/Sleeve Bearing
Certification: UL/CE/CCC/TUV
eOperation Temperature: -30 ℃~+60 ℃
Accessories for refrigerator motors
Components #1 : Aluminum alloy fan blades for shaded pole motors
Components #2 : Brackets for shaded pole motors ( AC):
Shaded pole motors, whether operating on AC or EC voltage, offer a reliable and cost-effective solution for low-power applications. Their simple design, combined with the benefits of modern EC technology, makes them a versatile choice for a wide range of household and commercial uses. As energy efficiency becomes increasingly important, EC shaded pole motors are leading the way in delivering enhanced performance with reduced energy consumption.
