The mechanical engineer's pocket-book. A reference-book of rules, tables, data, and formulæ, for the use of engineers, mechanics, and students (1910)
Kent, William, 1851-1918 · New York, J. Wiley & sons · leaf 1444
nts consist of three alter-nating currents, differing in phase by 120°, and represented by three sinecurves, as in Fig. 211. They may be distributed by three or six wires. Ifdistributed by the six-wire system, it is analogous to the four-wire, two-phase system, and is equivalent to three… … Fig. 211. Fig. 212. The Y connection is shown in Fig. 212. The three circuits are joinedat the point o, known as the neutral point, and the three wires carrying thecurrent are connected at the points a, b, and c, respectively. If the threecircuits ao, bo, and co are composed of lights, they must be…
Mechanical engineering
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