Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 304
e-Phase Mains entirely independent circuit, and the electromotive force of eachphase is stepped down (or up) by an ordinary transformer PS andPS, respectively. Fig. 221 shows what is called the three-wire,two-phase system, in which one line wire is used as a common returnwire for both phases, and… … Fig. 223. System Shown in Fig. 222 with One Transformer Removed Three=Phase System. The usual transmission line for a three-phase system consists of three wires, each wire being in effect a com- 269 256 A.LTERNATING-CURRENT MACHINERY core R^:
Electrical engineering
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