Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 213
t; Hi- : -:. t Fig. 2.430.—Diagram of connections of automatic induction regulator and accessory appara-tus on three phase feeder circuit. with each of the stationary contact points and so arranged asto assist in making the contact by increasing the pressure onthe contact points at the instant of… … Pig. 2,431.—Westinghouse drum type variable transformer voltage regulator. It consists ofa drum and finger type switch. A preventive resistance is used between the differentcontacts, making it unnecessary to open the circuit when moving from one tap of theregulating transformer to the next tap. A…
Electrical engineering
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