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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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#2304020
H913 Marathon Electric
Brand Marathon Electric
Model H913
$120.58 Each
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#2303722
E506-P Marathon Electric
Brand Marathon Electric
Model E506-P
$1,593.35 Each
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#2303932
E317 Marathon Electric
Brand Marathon Electric
Model E317
$9,080.13 Each
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#2303506
E303 Marathon Electric
Brand Marathon Electric
Model E303
$484.95 Each
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#2304013
P197 Marathon Electric
Brand Marathon Electric
Model P197
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#2303427
N416A Marathon Electric
Brand Marathon Electric
Model N416A
$648.04 Each
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#2303950
U275 Marathon Electric
Brand Marathon Electric
Model U275
$10,529.09 Each
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$396.11 Each
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$606.53 Each
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$633.77 Each
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$540.00 Each
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