Table of Contents
What is the max efficiency of a shaded pole watt motor?
The maximum efficiency of rotary shaded-pole induction motors with cage-rotors rated at 100 W usually does not exceed 20\%.
What is the horsepower range of shaded pole motors?
about 1⁄4 horsepower
They are built in power sizes up to about 1⁄4 horsepower (190 W) output. Above 1⁄3 horsepower (250 W), they are not common, and for larger motors, other designs offer better characteristics.
What is the range of the starting torque of shaded pole induction motor?
0.2-0.3
The range of the starting torque of the shaded pole induction motor is 0.2-0.3.
What type of motor is a shaded pole motor?
AC single phase induction motor
A Shaded Pole motor is an AC single phase induction motor. The auxiliary winding, which is composed of a copper ring, is called a shading coil. The current in this coil delay the phase of magnetic flux in that part of the pole in order to provide a rotating magnetic field.
Why are shaded pole motors inefficient?
The rotating magnetic field is what starts and keeps the rotor turning. Some shaded pole motors don’t use a shaded coil. But the problem is that they are inefficient, largely because of the lossy linkage between the shaded coil and main winding. The efficiency of shaded pole motors generally is only between 15 and 30\%.
Why is the shaded pole motor less efficient?
The shaded pole motor characteristics include the following. Efficiency is low due to power loss in the shading coil. Depending on the shaded coil position, the direction of rotation depends.
What is the speed of a shaded pole motor?
A shaded pole motor is a type of induction motor, just using some neat magnetic tricks to generate a second phase. It runs at slightly below synchronous speed, the slip depends on the torque. For a simple 2 pole motor, you’d expect it to run at perhaps 90\% of 3000 rpm (50 Hz countries), or 3600 rpm (60 Hz).
What are the advantages of shaded pole motor?
The shaded pole induction motor produces a very small starting torque about 50\% of full load torque. The efficiency of the shaded pole motor is low because of continuous power loss in the shading coil. It is suitable for small devices which require low starting torque.
https://www.youtube.com/watch?v=Uity_1XDLZ4