Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 325
ets is connected directly to earth and therefore electric contact betweenthe armature or field winding and the frame, -under this circumstance, would be more seriousthan in systems which are not earthed. (a) Testing for Grounds.—Fig. 328 shows how a grounded wire can be traced down.Using a 110-volt… … TEST^LAMP Fig. 328—Locating Grounds in a Motor. URMATURE COIL terminals of the field winding. If the lamp lights to partial or full brilliancy, the insulation of the armature or field circuits is broken down at some point. The circuit in which the ground exists can be determined by taking the…
Telegraph, Wireless
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