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 185
ne stacks. Second, with the horn gaps still in normalposition, the position of the transfer device is reversed and thehorn gaps are again closed for five seconds and returned to thenormal position. The complete charging operation takes but a few moments andshould be performed daily. The operation… … Fig. 2,397.—Highland Park sub-station, Charlotte, N. C. showing old lightning arrester toweron the left and General Electric aluminum (electrolytic) cell lightning arrester and horngaps in foreground. Grounded and Non-grounded Neutral Circuits.—It is important to avoid the mistake of choosing an…
Electrical engineering
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