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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.
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Item
Price
Quantity
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$146.47 Each
Free Shipping
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$185.64 Each
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$168.61 Each
Free Shipping
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#2522161
$70.65 Each
Free Shipping
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#2523771
$29.62 Each
Free Shipping
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#1847358
WWE PEWWE5-12-215T 5HP 1200RPM 215T FR 208-230/460
Brand WorldWide Electric
Model PE5-12-215T
Obsolete
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#1847456
WWE WWE400-12-586/7UZ 400HP 1200RPM 586/7UZ FR 460
Brand WorldWide Electric
Model 400-12-586/7UZ
Obsolete
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#1847723
WWE XPEWWE200-12-447/9TBB 200HP 1200RPM 447/9T FR 460
Brand WorldWide Electric
Model XPE200-12-447/9TBB
Obsolete
Big_card_vertical
$2,440.85 Each
Free Shipping
Big_card_vertical
Obsolete
Big_card_vertical
Obsolete
Big_card_vertical
Obsolete