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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 142

An illustration from 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, leaf 142
CURRENT AXD PRESSURE LIMITING DEVICES 1,661 *How to Select Relays.—The following general informationon relays, together with reference to the one line diagram,fig. 2,323, will be of interest and assistance in making a selectionfrom the various relays previously described to meet the require-mmts of… … Fig. 2.324 to2,329.—General Electric inverse? time limit overload circuit closing relays. Inthis type of relay its mechanism is so designed that a delay _ or lapse of time in openingthe circuit breaker after a pre-determined condition of the circuit has been reached, de-pends on the flow of…

Electrical engineering

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