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Purchasing a new electric motor can be tricky. With so many specifications and options on the internet, without a specific set of details and requirements, it gets tough.
For instance, if you want to replace a motor, you can just tell any seller the specifications of your motor. And they will get you the best possible option. But the real guess game starts when you don’t have a sample motor.
Raptor Supplies is here with a foolproof buying guide. This manual will help you make a conclusive decision when shopping for electric motors.
Before we go further, let’s address the elephant in the room.
What is an Electric Motor?
Electric motors are devices that use electricity to create movement. They’re like the powerhouses of many industries. They play a crucial role in the manufacturing, transportation and warehousing sectors. In general, these devices are useful in factories. They help assemble products like cars and smartphones. Hence, they contribute to the efficiency of production processes.
Electric motors power our everyday MRO applications while also driving business growth. They do this through the use of simple yet advanced components.
Components of Electrical Motor
Electric Motor Types
Electric motors can be categorised into two groups AC (Alternate Current) and DC (Direct Current)
AC Motors
AC motors use alternating current to produce mechanical power. This power moves the conveyors, compressors, machine tools and more. Moreover, these motors convey a steady and stable output. Hence, they are ideal for applications that need continuous movement and fewer gear changes.
If you want to learn more, please visit our website High Voltage Motor for Pumps.
There are two types of AC motors:
Single Phase Motors
Single-phase motors serve the operation of compact machinery and equipment with modest horsepower demands. These powerhouses find their niche in pumping, refrigeration and drilling applications, where efficiency is the key. They demand less maintenance and contribute to significantly prolonged lifespans. Also, they require only a single-phase supply to the stator to streamline the power input process.
Three Phase Motors
Three-phase motors play a crucial role in manufacturing plants and electrical grids. They are ideal for applications where the demand for electrical power is significant. As they receive power through a three-phase supply system, these motors ease the transmission of more electrical power.
General-purpose or three phaseare devices that run on a three phase AC supply and are sometimes referred to as ‘’synchronous motors’’ since they operate at a speed disparate from synchronous momentum. These motors are intrinsically built for everyday use in any environment. They are used in applications that include pumps, compressors, conveyors, pumps, material handling, and machine tools.
Moreover, these motors are a staple of industrial applications because of advantages such as low cost, sturdy construction, high efficiency, and good power factor. Some noteworthy manufacturers of general-purpose motors include Elecon, Rotomotive, Havells, ABB, etc. So, why are three-phase motors the preferred choice?
Over the years three-Phase general-purpose motors have established an uncanny knack for providing a plethora of utilities on the go. No wonder their utilities range from causing little or no voltage flicker at the motor start to having a comparatively longer maintenance-free lifespan than single-phase motors, they have it all!
Furthermore, three-stage general-purpose motors cost considerably less (approx. 30 to 50 percent less!) than their single-phase counterparts. But, perhaps, their USP lies in the much larger range of horsepower size they possess.
Here are some more factoids about these robust devices!
Take an instance when your home is on a three-phase motor for a particular load- pumping water. This motor can run for years on end without facing any major hindrances.
These self-starting behemoths don’t need a starter! Be it small capacity motors (less than 3 HP) or even larger motors, they can all sustain without starters. However, users are propelled to use starters due to weak distribution systems for bypassing the travesty called ‘’voltage dip’’. This dip can invariably affect other consumers!
Due to their innately efficient characteristics, three phase induction motors are some of the most widely used electric motors in India today! In fact, over 75% of the mechanical power harnessed by industries is due to three phase induction motors. These motors bank upon– good speed regulation, operating characteristics, and sheer absence of commutators!
They are also used in the agriculture industry. As a matter of fact, with the large-scale mechanization of farms, three-phase induction motors have gained prominence taking into account the electrical power requirement for carrying out farm renovations or expansions.
Like any other electrical motor, three phase induction motors comprise of two main parts- rotors and stators. The power is transmitted from stator to rotor winding through induction in these motors. Basically, there are two types of 3 phase induction motors- Squirrel cage induction motors and slip-ring induction motors. While, slip ring induction motors are primarily used in equipment where high starting torque is required such as in elevators, cranes, hoists, et al. squirrel cage induction motors predominantly power up lathes, fans, drilling machines, and blower printing machines.
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