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 131
Suitablemotors are supplied for this sen-ice, the type of motor varying in accordance with thecharacter of the operating current supplied. The advantage of this type of electricaloperation is that it puts very little strain on the switch mechanism, takes very little opera-ting curre-:, allows the… … CURRENT AND PRESSURE LIMITING DEVICES l.fiol for the protection of motors in the event of a temporary weakeningor failure of the pressure. They are also used in connection witha low voltage release or shunt trip coil on an oil switch or acircuit breaker. Reverse Energy Relays.—The chief object of…
Electrical engineering
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