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 498
demand pointer, whichis operated by a dog drive and held at the position of the maximumdeflection by a fine-tooth ratchet. Hence, if no other mechanismwere introduced, the auxiliary disk would instantly deflect thedemand pointer through an arc proportional to the load. In orderto introduce a time… … Fig. 133. Watt-Hour Demand Meter Courtesy of Westinghouse Electric and Manufacturing Company 454 ELECTRICAL MEASUREMENTS 157 Mechanical Action. The action of the instrument is as follows:The instant power flows through the instrument, the main diskrotates at a speed proportional to the load,…
Electrical engineering
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