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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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$116.55 Each
Free Shipping
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#1847701
WWE XPEWWE40-18-324T 40HP 1800RPM 324T FR 208-230/460
Brand WorldWide Electric
Model XPE40-18-324T
Obsolete
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#5058418
AURORA 4WP1HS125PEE 125HP 1800RPM 230/460 405TP
Brand Aurora Motors
Model 4WP1HS125PEE
$4,983.78 Each
Free Shipping
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Obsolete
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Obsolete
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#702216
Obsolete
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Obsolete
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#726898
Leeson LM14395
Brand Leeson
Model LM14395
Obsolete
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#727103
Leeson LM21812
Brand Leeson
Model LM21812
Obsolete
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#727115
Leeson LM21871
Brand Leeson
Model LM21871
Obsolete
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#727222
Leeson LM27293
Brand Leeson
Model LM27293
Obsolete
Big_card_vertical
#226037
$1,135.97 Each
Free Shipping