The Blessing Of Science In Modern Civilization Is The Motor.
This motor discovery of science plays a very important role in modernizing and simplifying our life. Undoubtedly the invention of the motor, a regulator of modern civilization. We will talk about Electric AC Motors here today. We all know that motor is important in our daily life, work or industry. It is very difficult to work at the present time without a motor as an artificial kinetic or driving force.
Since we will discuss AC Motors here. In that case, we will know the Definition And Types Of AC Motors or classifications of AC Motors and briefly discuss some of the things that work in the AC motor industry. We will discuss the advantages and disadvantages of using an AC Motor.
The AC Motor can be classified based on the arrangement:-
Speed Place Motor,
Capacitor Start And Run Motor,
Capacitor Start Induction Run Motor,
Shaded Pole Single Phase Motor.
According to the single-phase classification of AC Motor:-
AC Series Motor,
Un-excited Synchronizes Motor.
According to the operation methods classification of AC Motor.
(A) Induction Motor,
– Squirrel Cage Induction Motor,
– Slip Ring Or Wound Rotor Induction Motor,
(B) Commutator Motor.
According to phase AC Motor are divided into two kinds,
According to Speed AC Motor are divided into three types,
Constant Speed Motor,
Adjustable Speed Motor, and
Variable Speed Motor.
What are the advantages or disadvantages of Induction Motors?
Induction motors are cheap and very readily available.
The structure of the induction motor is simple and does not break easily.
Since the induction motor does not have a carbon brush, it is less frictionless.
The power factor of the induction motor is good.
Induction motor maintenance is not easy or required.
No other equipment is required to start the induction motor.
If you want to change the speed of the induction motor, this speed can be reduced.
As the load of the induction motor increases, the speed decreases.
The torque of an induction motor is usually less than that of a synchronous motor.
Main part 2 of an AC Motor:-
What is the percentage of sleep ( ‰ of Sleep ) for a Motor?
The performance of a motor, good or bad, depends on its percentage of slip. For example, if the percentage of slip is higher then the loss is higher. If the percentage of slip is less then the loss of that motor is less. The percentage of slip can be easily understood by one of the following equations.
∴ Ns = 120f / P
f = Supply friquency,
P = Number of pole,
Ns = Synchronous speed,
Sleep = Ns – Nr,
Hare, Ns = Synchronous speed,
Nr = Rotor Speed,
∴ ‰ of Sleep = ⌈ ( Ns – Nr ) ⁄ Ns ⌉ × 100 %
What Is the Protection category of a Motor?
Looking at the external structure of any type of motor and the tag or code number on it reveals what kind of motor it is and what protection it has. That is, the short tag or code number carries the identity of the motor. Hare;-
IP (XY) = Ingress Protection.
X Part = Solid Particle.
Y Part = Liquid Particle.
Value Of X = 0 ∼ 5,
0 = Non Protaction,
1 = 15 mm Solid Particle Protection,
2 = 12 mm Solid Particle Protection,
3 = 3 mm Solid Particle Protection,
4 = 1 mm Solid Particle Protection,
5 = Dust Protection.
Value Of Y = 0 ∼ 8,
0 = Non Protaction.
1 = Dropping Water Protection,
2 = 15º Vartical Water Particle Protection,
3 = Spray Water Particle Protection,
4 = Splashing Water Particle Protection,
5 = Jet Water Protection.
6 = Ships Dead Water Particle Protection,
7 = Water Protection.
8 = Water Resistance or SubMersible Motor.
Please take a look at the following links:
What is Critical Point, Surge Point, Yield Point, Aniline Point, Triple Point, Triple Point Of Water, Melting Point, Auto Ignition Point?
What Is Fire Point, Smoke Point, Freezing Point, Dew Point, Flash Point, Pour Point, Boiling Point, Bubble Point?