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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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#2304484
M741 Marathon Electric
Brand Marathon Electric
Model M741
$4,481.93 Each
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#2303832
GT3436 Marathon Electric
Brand Marathon Electric
Model GT3436
$2,683.00 Each
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#2303944
Y1644 Marathon Electric
Brand Marathon Electric
Model Y1644
$14,778.44 Each
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#2303496
GT3405 Marathon Electric
Brand Marathon Electric
Model GT3405
$743.95 Each
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#2303605
GT2514 Marathon Electric
Brand Marathon Electric
Model GT2514
$1,042.22 Each
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#2303692
E709A Marathon Electric
Brand Marathon Electric
Model E709A
$1,297.65 Each
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#2303621
GT3414 Marathon Electric
Brand Marathon Electric
Model GT3414
$1,094.93 Each
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#2303624
U636A Marathon Electric
Brand Marathon Electric
Model U636A
$728.14 Each
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#2303668
GT3417 Marathon Electric
Brand Marathon Electric
Model GT3417
$1,634.93 Each
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#2303556
N317A Marathon Electric
Brand Marathon Electric
Model N317A
$1,026.17 Each
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#2303458
N684A Marathon Electric
Brand Marathon Electric
Model N684A
$765.78 Each
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#2303215
L472A Marathon Electric
Brand Marathon Electric
Model L472A
$20,659.03 Each
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