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 91
operating coils are shownconnected to main switch circuit, but may be connected to an entirely separate controlcircuit. Connections are the same for either alternating or direct current. Oil switches are often used on systems with generator capacityof many thousand kilowatts. It is therefore… … FlG. 2,230.—Wes-.inghouse three pole hand operated remote cortrol oil switch, adapted forthe control of alternating current circ-u: . and moderate capacities, the pres- sures of which do not exceed 25,000 volts. Each ur t : in a separ.. compartment. The open position of contacts is r I I and…
Electrical engineering
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