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HANDBOOK OF MECHANICAL DESIGN 



WINDING CONNECTION DIAGRAMS FOR MULTISPEED MOTORS 



MULTISPEED MOTORS, CONSTANT HORSEPOWER, KEY DIAGRAMS 



Single winding, two speed 

 N.E.M.A. MG. 6-41, Fig. 8, 1930 



Speed 



Low. , 

 High. 



Single winding, two speed 

 A.S.A. C-6 3.720, 1938 



Speed 



Ti, T2, T3 together Low. 

 7^4, To, Te open High. 



Ti, Tt, Te together 

 Tu T2, Ti open 



T7 T, 



Two winding, three speed 

 N.E.M.A. MG. 6-41, Fig. 8, 1930 



Terminals not listed must be left open. 

 * Low speed half of high speed, 

 t Second speed between low and high. 



Terminals not listed must be left open. 

 * Low speed half of high speed. 

 t Second speed between low and high. 



T7 Tg 



Two winding, four speed 

 N.E.M.A. MG. 6-41, Fig. 8, 1930 



Speed 



Low. . . 

 Second 

 Third.. 

 High.. 



Two winding, four speed 

 A.S.A. C-6 3.720, 1938 



T4, T,, T,, Ti together 

 ^14, ^15, Tu, Ti7 together 



Terminals not listed must be left open. 



Terminals not listed must be left open. 



