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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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Obsolete
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#2984079
Bell & Gossett 169211 MOTOR
Brand Bell & Gossett
Model 169211
$1,211.21 Each
Free Shipping
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$393.15 Each
Free Shipping
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$2,212.17 Each
Free Shipping
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#5027054
Grundfos 96405801 MS 4000 3X230V 3HP 60 LD
Brand Grundfos
Model 96405801
$673.97 Each
Free Shipping
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#726884
Leeson LM13802
Brand Leeson
Model LM13802
Obsolete
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#726903
Leeson LM14412
Brand Leeson
Model LM14412
Obsolete
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#726958
Leeson LM17076
Brand Leeson
Model LM17076
Obsolete
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#726966
Leeson LM17182
Brand Leeson
Model LM17182
Obsolete
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#727106
Leeson LM21817
Brand Leeson
Model LM21817
Obsolete
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#727371
Leeson LM30682
Brand Leeson
Model LM30682
Obsolete
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#225819
$647.57 Each
Free Shipping