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The effect of power factor on the accuracy of integrating wattmeters (1908)

Bradshaw, Percy Belmont, Hobbs, Horace Gaylord · leaf 74

An illustration from The effect of power factor on the accuracy of integrating wattmeters, 1908, leaf 74
, exactly 90*^phaserelation between the shunt and series field jtiust be maintained,otherwise the indications of the wattmeter will be in erroron inductive loads* The shunt winding is connected in circuit so thatit measures thee.n.f.drop across the load. This windingconsists of a large number of… … the e.m.f. E^is available for overcoming the counter inducedpressure of the windings. Because of the high inductanceof the coil,I lags nearly 90 behind E, the iron and copperloss tending to make the angle slightly less than the 90 degreerelation which would hold if the circuit were purely…

Electric meters · Electricity · Watt-hour meter · Theses

Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.

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