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), 1833-1928 · New York : T. Audel & Co. · leaf 549
n alternating current relay winding, the otherend being connected to the insulated section. This relay, which isgenerally known to signalmen as the polyphase relay is connectedbetween the insulated and the uninsulated tracks as is also the second-ary winding of an alternating current transformer.… … Fig. 3,730.—A crossing bell circuit showing application of Chicago time relay (shown in fig.3,731). There is a wide variety of application for this type of relay, including wire oper-ating crossing bells, locking and release circuits. Across the alternating circuit relay winding is shunted, or…
Electrical engineering
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