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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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#1847590
WWE PEWWE2-18-145TC 2HP 1800RPM 145TC FR 208-230/460
Brand WorldWide Electric
Model PE2-18-145TC
Obsolete
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#1847304
WWE TJ1-36-56JB 1HP 3600RPM 56J FR 115/208-230
Brand WorldWide Electric
Model TJ1-36-56JB
Obsolete
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#1847571
WWE WWE150-9-575-449T 150HP 900RPM 449T FR 575
Brand WorldWide Electric
Model 150-9-575-449T
Obsolete
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#1847428
WWE WWE250-18-449TBB 250HP 1800RPM 449T FR 460
Brand WorldWide Electric
Model 250-18-449TBB
Obsolete
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#1847515
WWE WWE250-18-460-PWS-449T 250HP 1800RPM 449T FR 460
Brand WorldWide Electric
Model 250-18-460-PWS-449T
Obsolete
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$396.95 Each
Free Shipping
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$1,353.07 Each
Free Shipping
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$6,947.27 Each
Free Shipping
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$26,561.71 Each
Free Shipping
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$1,085.76 Each
Free Shipping
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Obsolete