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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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#2303738
GT3227 Marathon Electric
Brand Marathon Electric
Model GT3227
$1,695.64 Each
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#2304463
GT0502 Marathon Electric
Brand Marathon Electric
Model GT0502
$564.32 Each
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#2303556
N317A Marathon Electric
Brand Marathon Electric
Model N317A
$1,026.17 Each
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#2303692
E709A Marathon Electric
Brand Marathon Electric
Model E709A
$1,297.65 Each
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#2303830
GT3136 Marathon Electric
Brand Marathon Electric
Model GT3136
$2,841.10 Each
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#2303389
U923A Marathon Electric
Brand Marathon Electric
Model U923A
$407.32 Each
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#2303343
R422A Marathon Electric
Brand Marathon Electric
Model R422A
$494.01 Each
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#2303923
U912A Marathon Electric
Brand Marathon Electric
Model U912A
$8,928.45 Each
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#2303604
GT0514 Marathon Electric
Brand Marathon Electric
Model GT0514
$1,042.22 Each
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#2303778
GT3226 Marathon Electric
Brand Marathon Electric
Model GT3226
$3,230.65 Each
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#2303328
N498 Marathon Electric
Brand Marathon Electric
Model N498
$463.62 Each
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$380.16 Each
Free Shipping