Shaded-pole motors of the asymmetrical type shown are only reversible by disassembly and flipping over the stator, though some similar looking motors have small, switch-shortable auxiliary windings of thin wire instead of thick copper bars and can reverse electrically.
Can the direction of rotation of pole induction motor be reversed?
Answer : In a shaded pole single-phase motor, the revolving field is produced by the use of shading coils. Answer : The direction of rotation of 3-phase induction motor is reversed by Changing the phase sequence of supply.
Can a shaded pole motor be speed controlled?
The remaining motors, shaded pole, PSC, and polyphase, are the best choices when selecting a motor that will be speed controlled. The shaded pole motor is the most economical to use out of these three motors because of its inherent design, but it is only available in subfractional to 1/4 horsepower.
What is the highest HP for a shaded pole motor?
For extremely small capacities up to 1/40 hp (18.7W), the shaded-pole type of motor is most frequently used. It provides sufficient torque for fans, blowers, and other similar equipment, and the starting current is not objectionable on lighting lines.
How is the speed of a consequent pole motor changed?
The synchronous speed of the consequent-pole squirrel-cage motor can be changed by changing the number of stator poles. If the number of poles is doubled, the synchronous speed is reduced by one-half.
What do you mean by shaded pole motor?
: a single-phase induction motor in small ratings made self-starting by flux displacement derived by means of a permanently short-circuited, high-resistance winding or loop encircling a fraction of the pole pitch or pole piece.
What is the speed of a shaded pole motor?
Motors using the shaded-pole principle have been developed in many forms and in greatly varying ratings as in any popular motor type. The rotor is almost in- variably a simple squirrel-cage type. 11 The shading coils or windings are four coils (for a :ooto:v speed of 1800 rpm) of one turn each of bare copper strap.
Can a shaded pole motor be electrically reversed Why or why not?
Easily reversible, less running torque pulsation, higher starting torque, higher efficiency. Can a shaded pole motor be electrically reversed? No, since the shaded pole is fixed.