Efficiency of the type A.T.B. Form D. general electric alternator

Abstract

Introduction: Revolving Field Alternator. No. 62299 Type A.T.B. Form D. Class 12 - 150 - 600 33 Amperes. Volts No load 2030 - Full load 2300. The above machine is installed in the Manhattan Ice, Light, and Power Company's plant at Manhattan, Kansas. This Alternator is put out by the General Electric Company and is known as one of the “smaller” machines. In this kind of machine the “barrel” winding is used, employing only one kind of coil. The armature coils are held in place by means of beach wood wedges which also serve to protect the coils from any foreign matter that may work into the air gap. The armature case is made of a good quality of sheet iron annealed and the laminae insulated by japan.