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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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#2303929
Y1636 Marathon Electric
Brand Marathon Electric
Model Y1636
$9,935.22 Each
Free Shipping
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#2303355
R428A Marathon Electric
Brand Marathon Electric
Model R428A
$822.55 Each
Free Shipping
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#2303906
U272 Marathon Electric
Brand Marathon Electric
Model U272
$6,535.42 Each
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#2303658
U648A Marathon Electric
Brand Marathon Electric
Model U648A
$1,025.76 Each
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#2303514
GT2408 Marathon Electric
Brand Marathon Electric
Model GT2408
$650.71 Each
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#2303642
W546-P Marathon Electric
Brand Marathon Electric
Model W546-P
$1,375.83 Each
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#2303700
GT3224 Marathon Electric
Brand Marathon Electric
Model GT3224
$1,484.84 Each
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#2303765
Y473 Marathon Electric
Brand Marathon Electric
Model Y473
$2,521.11 Each
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#2303685
GT0420 Marathon Electric
Brand Marathon Electric
Model GT0420
$1,403.06 Each
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#2303573
GT3215 Marathon Electric
Brand Marathon Electric
Model GT3215
$954.36 Each
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#2303410
E2156 Marathon Electric
Brand Marathon Electric
Model E2156
$398.26 Each
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#2303802
GT3134 Marathon Electric
Brand Marathon Electric
Model GT3134
$2,618.50 Each
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