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 427
is passed through both the current coils of the meter,and the same result is obtained as in the four-wire meter in whichthe current of the third phase passes through separate coils. These meters are entirely accurate only on balanced voltages.A three-phase four-wire three-element meter is made for… … LfiMF LOnji ■SINqLC-FHASE WATT-HOUR M£T£R Fig. 85._ Measurement of Energy in a Three-Phase Three-Wire Circuit, and also aSingle-Phase Circuit, Tapped at One-half the Potential of the Circuit.(Dotted Lines Show Alternative Connection) any of the foregoing methods, which are given as correct on…
Electrical engineering
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