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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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#2303815
E567-P Marathon Electric
Brand Marathon Electric
Model E567-P
$3,127.64 Each
Free Shipping
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#2303561
GT2411 Marathon Electric
Brand Marathon Electric
Model GT2411
$895.28 Each
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#2303479
U925A Marathon Electric
Brand Marathon Electric
Model U925A
$517.99 Each
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#2304508
M749 Marathon Electric
Brand Marathon Electric
Model M749
$8,924.66 Each
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#2303412
E2131 Marathon Electric
Brand Marathon Electric
Model E2131
$398.26 Each
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#2303492
GT3210 Marathon Electric
Brand Marathon Electric
Model GT3210
$589.21 Each
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#2303776
GT3126 Marathon Electric
Brand Marathon Electric
Model GT3126
$3,230.65 Each
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#2303657
U638A Marathon Electric
Brand Marathon Electric
Model U638A
$996.38 Each
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#2303704
GT3225 Marathon Electric
Brand Marathon Electric
Model GT3225
$1,734.00 Each
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#2303942
Y1641 Marathon Electric
Brand Marathon Electric
Model Y1641
$12,756.08 Each
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#2303498
GT3505 Marathon Electric
Brand Marathon Electric
Model GT3505
$743.95 Each
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#2303373
GT1403 Marathon Electric
Brand Marathon Electric
Model GT1403
$256.17 Each
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