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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
Big_card_vertical
#726910
Leeson LM14566
Brand Leeson
Model LM14566
Obsolete
Big_card_vertical
#726963
Leeson LM17179
Brand Leeson
Model LM17179
Obsolete
Big_card_vertical
#726969
Leeson LM17186
Brand Leeson
Model LM17186
Obsolete
Big_card_vertical
#727094
Leeson LM21237
Brand Leeson
Model LM21237
Obsolete
Big_card_vertical
#727109
Leeson LM21824
Brand Leeson
Model LM21824
Obsolete
Big_card_vertical
#727190
Leeson LM24868
Brand Leeson
Model LM24868
Obsolete
Big_card_vertical
#727386
Leeson LM30739
Brand Leeson
Model LM30739
Obsolete
Big_card_vertical
#727387
Leeson LM30740
Brand Leeson
Model LM30740
Obsolete
Big_card_vertical
#727405
Leeson LM30765
Brand Leeson
Model LM30765
Obsolete
Big_card_vertical
#727558
Leeson LM32794
Brand Leeson
Model LM32794
Obsolete
Big_card_vertical
#224587
Obsolete
Big_card_vertical
#225395
Obsolete