You can not reverse it as shading coil (usually a thick copper ring) is fitted and fixed in the Stator pole shoe to a corner. Due to Inductance of this coil motor always rotates towards this ring in the periphery of the circle around the gap.
Can you reverse the direction of a shaded pole motor?
Shaded pole motors come in a variety of shapes and sizes and are convenient for powering displays, models and marble machines. Sometimes these motors are running in the opposite direction to what we would prefer. Most of them are constructed so we can reverse the rotation by reversing the field.
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.
What are the disadvantages of shaded pole motor?
Disadvantages of Shaded Pole Motor
- Very low starting torque.
- Low power factor.
- High losses.
- Less efficiency.
- Difficult in speed reversal as it requires expensive copper rings.
Which way does a shaded pole motor run?
Shaded Pole Motors
The direction of rotation is from the unshaded side to the shaded ring. When power is applied to the stator, the flux in the main part of the pole induces a voltage in the shading coil, which acts as a transformer secondary winding.
Does a shaded pole motor have brushes?
The construction of the motor is very simple because it does not contain any commutator, brushes, collector rings, etc. or any other part. The shaded pole induction motor does not have any centrifugal switch.
How many windings does a shaded pole motor have?
Unlike other types of single phase motors, shaded-pole motors have only one main winding and no start winding or switch.
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 change?
How is the speed of a consequent-pole squirrel-cage 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. 1800 rpm.
How do you reverse a small electric motor?
Remove power from the motor. Hook the battery positive wire to the negative terminal and hook the battery negative wire to the positive terminal for a simple DC motor. Install a double pole double throw changeover switch between the battery and the motor. The motor will now have a forward, reverse and an off position.
What are the advantages of shaded pole motor?
4. Advantages, Disadvantages and Applications The various advantages of Shaded pole motors includes Very cheap and reliable Easy to construct Extremely rugged in nature Disadvantages includes Low efficiency Low starting torque Since the shading coil is made of copper, the copper loss is high.
What is the working principle of shaded pole motor?
The working principle of shaded pole induction motor is simple, the main winding carries alternating current and produces magnetic flux in the stator coil. The same magnetic flux cut by the copper shaded band. Due to this, the EMF will be induced in the copper band.
What is meant 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.