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Description: Most industrial motors require AC (alternating current) voltage whose polarity oscillates 60 times a second (for a frequency of 60 Hertz) between positive and negative. Single phase AC motors have brushes just like DC motors. Most of them have capacitors to assist starting and to establish the direction of rotation. Changing direction implies changes in the capacitors’ connection. Speed is directly proportional to the applied voltage (just like DC motors). Usage is restricted to low-power uses (home appliances like vacuum cleaners, washing machines, coffee grinders, or power tools like rotary hammers etc.). For higher power requirements, three-phase AC motors are used. These do not have carbon brushes to wear out, their rotors (called squirrel cages) have no electrical connections, thus making them extremely robust and long-lived. Only the stator windings are connected to the power line. They just keep turning as long as their ball bearings are OK. Changing direction requires swapping any two of the three phase lines. Speed control is done by modifying the frequency of the AC delivered to the motor; this can be done using complex devices called AC drives.
Item ID
Item
Price
Quantity
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#2303633
E2143 Marathon Electric
Brand Marathon Electric
Model E2143
$762.34 Each
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#2303739
GT3427 Marathon Electric
Brand Marathon Electric
Model GT3427
$1,695.64 Each
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#2303510
Y287A Marathon Electric
Brand Marathon Electric
Model Y287A
$1,437.25 Each
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#2303668
GT3417 Marathon Electric
Brand Marathon Electric
Model GT3417
$1,634.93 Each
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#2303313
N347 Marathon Electric
Brand Marathon Electric
Model N347
$473.08 Each
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#2303707
GT3120 Marathon Electric
Brand Marathon Electric
Model GT3120
$1,997.50 Each
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#2303667
GT3117 Marathon Electric
Brand Marathon Electric
Model GT3117
$1,634.93 Each
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#2303466
GT0505 Marathon Electric
Brand Marathon Electric
Model GT0505
$640.95 Each
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#2303678
Y1609 Marathon Electric
Brand Marathon Electric
Model Y1609
$1,351.20 Each
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#2303512
Y559A Marathon Electric
Brand Marathon Electric
Model Y559A
$1,101.64 Each
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#2303789
GT2429 Marathon Electric
Brand Marathon Electric
Model GT2429
$2,682.16 Each
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#2303572
GT3115 Marathon Electric
Brand Marathon Electric
Model GT3115
$954.36 Each
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