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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
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#1847245
WWE TJ2-36-56CB-NOL 2HP 3600RPM 56C FR 115/208-230
Brand WorldWide Electric
Model TJ2-36-56CB-NOL
Obsolete
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#1847415
WWE WWE125-9-445/7T 125HP 900RPM 445/7T FR 208-230/460
Brand WorldWide Electric
Model 125-9-445/7T
Obsolete
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#1847743
WWE XPEWWE15-18-254TC 15HP 1800RPM 254TC FR 208-230/460
Brand WorldWide Electric
Model XPE15-18-254TC
Obsolete
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$2,108.38 Each
Free Shipping
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$1,619.15 Each
Free Shipping
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#5058424
AURORA 4WP1HS400PEE 400HP 1800RPM 230/460 5806L
Brand Aurora Motors
Model 4WP1HS400PEE
$17,252.54 Each
Free Shipping
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Obsolete
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