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 258
Fig. 89. Power Input Diagram for a Four-Wire Tliree-Phase Circuit witti One Wattmeter … Fig. 90. Power Input Diagram for a Tlireo-Phase Tliree-Wire Circuit with One Wattmeter of one instrument have to be reversed, the readings of that watt-meter are negative. Balanced Poiir-Wire Three-Phase Circuit. To measure thepower of a balanced four-wire three-phase system, one wattmeter 229 108…
Electrical engineering
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