International Library of Technology · Scranton, International Textbook Co. · leaf 315
whether more copper is required in the over-head feeders. In order to find this out, it is necessary toknow the comparative resistances of the two. If the trackresistance is high compared with that of the overhead line,the track return needs attention, and vice versa. Fig. 16 shows one method of… … FIG. 16. for a short time, and a water rheostat IF is connected inseries with the feeder i^ and the regular feeder ammeter A.The feeding-in point x is connected to the track by any con-venient means, as shown at xr, and a steady current is sentthrough the circuit G + -IV-A-c-F-F-x-^-R-G—. The…
Electrical engineering
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