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 119
well as with twoor more switches, to secure the desired operation and protection. Selection.—In all electrical installations protection of ap-paratus is important, but in some large central stations this issecondary to continuity of service. 1,638 HAWKINS ELECTRICITY To combine maximum protection… … SPEED LIMITING•^DEVICE. PlG. 3.073.—Diagram of connections of General Electric low voltage release coil when usedwith speed limiting device on rotary converter. controlling or protecting devices if proper care be taken to selectthe relays suited to the special conditions of the installation.To do…
Electrical engineering
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