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 196
lass cases, and when in metal cases,are finished to harmonize with the other equipment of the switch-board. Figs. 42 and 43 show examples of watt-hour metersof different manufacture. Fig. 42 is a polyphase induction watt-hour meter manufactured by the Westinghouse Company, whileFig. 43 is a Sangamo… … Fig. 43. Direct-Current Integrating WattmeterCourtesy of Sangamo Electric Company are now building instruments on the DArsonval principle. Whenproperly made, the DArsonval is considered the best instrumentfor all ordinary work. This- instrument consists of permanentmagnets between the poles of…
Electrical engineering
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