PR Log - Advantages of AC Motors (1) by yhi13010

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									PR Log - Global Press Release Distribution




                                             Advantages of AC Motors (1)

       By Kevin
       Dated: May 29, 2009

       The most common and simple industrial motor is the three phase AC induction motor. This ac induction
       motor is sometimes known as the "squirrel cage" motor. Below are advantages of ac induction motors used
       in the indstry.

       The most common and simple industrial motor is the three phase AC induction motor. This ac induction
       motor is sometimes known as the "squirrel cage" motor. Substantial information can be found about any
       motor by checking the nameplate of ac motor.

        Below are advantages of ac induction motors used in the indstry.

        1. Simple Design

        The simple design of AC motor

        Simply a series of three windings in the exterior (stator) section with a simple rotating section (rotor). The
       changing field caused by the 50 or 60 Hertz AC line voltage causes the rotor to rotate around the axis of the
       ac motor.

        The speed of the AC motor depends only on three variables:

        a) The fixed number of winding sets (known as poles) built into the ac motor, which determines the ac
       motor's base speed.
        b) The frequency of the AC line voltage. Variable speed drives (Adjustable speed drives) change this
       frequency to change the speed of the motor.
        c) The amount of torque loading on the motor, which causes slip.


        2. Low Cost

        The AC motor has the advantage of being the lowest cost motor for applications which require more than
       about 1/2 hp (325 watts) of power. This is due to the simple design of ac motor. For this reason, AC motors
       are overwhelmingly preferred for fixed speed applications in our industrial applications and for commercial
       and domestic applications where AC line power can be easily attached. In fact over 90% of all motors are
       AC induction motors. AC induction motors are found in air conditioners, washers, dryers, industrial
       machinery, fans, blowers, vacuum cleaners, and many, many other applications.

        3. Reliable Operation

        The simple design of the AC motor results in extremely reliable, low maintenance operation. Unlike the
       DC motor, there are no brushes to replace for ac motors. If run in the appropriate environment for its
       enclosure, AC motor can expect to need new bearings after several years of operation. In fact if the
       application is well designed, an AC motor may not need new bearings for more than a decade.

        4. Easily Found Replacements of AC motors



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 The wide use of AC motors has resulted in easily found replacements. And many manufacturers adhere to
either European (metric) or American (NEMA) standards. (For Replacement Motors)

5. Variety of Mounting Styles

AC Motors are available in many different mounting styles, such as:

a) Foot Mount
b) C-Face
c) Large Flange
d) Vertical
e) Specialty

6. Many Different Environmental Enclosures

 Because of the wide range of environments in which people want to use motors, the AC motors have been
adapted by providing a wide range of enclosures:

a) ODP - Open Drip Proof
b) TEFC - Totally Enclosed Fan Cooled
c) TEAO - Totally Enclosed Air Over
d) TEBC - Totally Enclosed Blower Cooled
e) TENV - Totally Enclosed Non-Ventilated
f) TEWC - Totally Enclosed Water Cooled




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###

We are a manufacturer in China of AC drives, variable frequency drives (VFD), frequency converters,
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We offer these items to worldwide and deliver quality services.

Category           Technology, Automotive, Engineering
Tags               ac induction motor, ac motor, Advantage
Email              Click to email author
Country            China




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