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ELECTRICAL MACHINERY 



Proper Bracing for Armature Coils. When the winding 

 is for the armature of a slow speed, multiple-pole gen- 

 erator the end connections are short and rigid and require 

 no extra bracing to prevent bending in case of excessive 



FIG. 148. Formed Coils for a Polyphase Winding Showing How 

 End Connections are Bent to Lessen Liability of Insulation 

 Break-down between Coils of Different Phases. Allis-Chalmers 

 Co. 



current, in the armature winding. In the case of a turbo- 

 generator, designed for high speed, and hence having a 

 field frame of only two or four poles, the end connections 

 are very long; if a short-circuit occurs on such a machine 



