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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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Price
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$6,391.88 Each
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$1,564.35 Each
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$193.20 Each
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Obsolete
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$949.19 Each
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#2840509
BALDOR EMVM22454D-PP M3BP 225SMB 4P B5 45KW :
Brand Baldor
Model EMVM22454D-PP
$5,473.14 Each
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#2840513
BALDOR EMVM25554D-PPN M3BP 250SMA 4P B5 55KW :
Brand Baldor
Model EMVM25554D-PPN
$7,105.14 Each
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#2840622
BALDOR MM13552-APN M3AA 132 SB 2P B3 5.5KW :
Brand Baldor
Model MM13552-APN
$632.00 Each
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#2840653
BALDOR MM25554-PPN M3BP 250 SMA 4P B3 55KW :
Brand Baldor
Model MM25554-PPN
$4,810.29 Each
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#2840665
BALDOR MVM13554D-APN M3AA 132 M 4P B5 5.5KW :
Brand Baldor
Model MVM13554D-APN
$709.71 Each
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