How do I know if I have a squirrel cage induction motor?
Classification of Squirrel Cage Induction Motor
- Class-A Design. These type motors have low resistance, reactance, slip, and higher efficiency at full load.
- Class B Design. These motors have high reactance and operate 5-150KW range.
- Class C Design.
- Class D Design.
- Class E Design.
- Class F Design.
What is a 3 phase squirrel cage motor?
A 3 phase squirrel cage induction motor is a type of three phase induction motor which functions based on the principle of electromagnetism. It is called a ‘squirrel cage’ motor because the rotor inside of it – known as a ‘squirrel cage rotor’ – looks like a squirrel cage.
What are squirrel cage motors used for?
Squirrel cage induction motors are commonly used in many industrial applications. They are particularly suited for applications where the motor must maintain a constant speed, be self-starting, or there is a desire for low maintenance. These motors are commonly used in: Centrifugal pumps.
Is a squirrel cage motor AC or DC?
Squirrel cage motors maximize electromagnetic induction by utilizing rotor bars to interact with the stator’s EMF. The stator usually contains windings of wire which carry an AC current; this current changes in sync with a sinusoidal curve (or “alternates”), which changes the current direction in the wire windings.
Why is it called a squirrel cage motor?
Squirrel cage motors are a subclass of induction motors, which harness electromagnetism to generate motion. They are so-called “squirrel cage” motors because the shape of their rotor – the inner component connected to the output shaft – looks like a cage.
Why AC motor is better than DC?
AC motors are generally considered to be more powerful than DC motors because they can generate higher torque by using a more powerful current. However, DC motors are typically more efficient and make better use of their input energy.
Why are squirrel cage motors so reliable?
Squirrel cage motors are explosion proof due to the absence of brushes slip rings and brushes which eliminates the risks of sparking. Squirrel Cage motors are better cooled compared to slip ring induction motors.
Which motor is used in fan?
In conventional ceiling fans, single phase induction motor is used. These motors consume minimum power and hence, are also known as fractional kilowatt motors. A single phase induction motor requires only one power phase for operating.
How do you control the speed of a squirrel cage induction motor?
So increasing number of poles will reduce the speed of motor. While decreasing poles will results in increasing speed. Thus, number of poles can be increased from two to any number in order to decrease the speed of motor. For this purpose, multiple windings can be used each having different number of poles.
Can a AC motor generate electricity?
You can use just about any motor to generate electric current, if it is wired correctly and you follow specific rules for its use. Modern AC induction motors are quite simple to wire as alternating current generators, and most will begin generating electricity the first time you use them.
Are fan motors AC or DC?
Most ceiling fans, as well as most household appliances, use AC motors, as AC is the type of current distributed by power companies. AC motors function by being connected directly to a power source. This power source is what creates the moment of force required to rotate the motor’s rotor.
Why capacitor is used in fan?
The capacitor is used not only to start the fan but also to make it spin. In simple words, the capacitor creates a magnetic flux (torque) which makes the fan rotate. Generally, two capacitors in parallel series are used in the ceiling fan.