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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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#2303479
U925A Marathon Electric
Brand Marathon Electric
Model U925A
$517.99 Each
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#2303556
N317A Marathon Electric
Brand Marathon Electric
Model N317A
$1,026.17 Each
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#2303373
GT1403 Marathon Electric
Brand Marathon Electric
Model GT1403
$256.17 Each
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#2303668
GT3417 Marathon Electric
Brand Marathon Electric
Model GT3417
$1,634.93 Each
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#2303739
GT3427 Marathon Electric
Brand Marathon Electric
Model GT3427
$1,695.64 Each
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#2303815
E567-P Marathon Electric
Brand Marathon Electric
Model E567-P
$3,127.64 Each
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#2303483
H182A Marathon Electric
Brand Marathon Electric
Model H182A
$420.79 Each
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#2303417
GT3404 Marathon Electric
Brand Marathon Electric
Model GT3404
$483.76 Each
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#2303667
GT3117 Marathon Electric
Brand Marathon Electric
Model GT3117
$1,634.93 Each
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#2303323
N426 Marathon Electric
Brand Marathon Electric
Model N426
$381.03 Each
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#2303692
E709A Marathon Electric
Brand Marathon Electric
Model E709A
$1,297.65 Each
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#2303536
GT3412 Marathon Electric
Brand Marathon Electric
Model GT3412
$830.36 Each
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