International Library of Technology · Scranton, International Textbook Co. · leaf 355
ly be supplied by the disabledmachine. Again, in large plants, it is quite customary tosupply all the alternators with their field current from oneor two large exciters that feed into a pair of exciter bus-bars, from which the several alternators are supplied. 52. Running- Alternators Separately. —… … FiG. 63. cases, they are arranged so that the load may be dividedbetween them. This is usually accomplished by usingdouble-pole, double-throw switches, as indicated in Fig. 63,when two alternators are used. The upper set of bus-bars 64 ELECTRIC LIGHTING. § 17 is connected to one alternator and the…
Electrical engineering
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