Electric transmission of energy and its transformation, subdivision, and distribution. A practical handbook (1894)
Kapp, Gisbert, 1852-1922 · New York, Van Nostrand · leaf 259
e multiply the latter by the ratio O El O E cos <p O E0 = O E cos ^ cos (P—+) 240 ELECTRIC TRANSMISSION OF ENERGY. If w be the true and wl the apparent watts we havetherefore iv = w cos <p cos 4 cos (<p—40 56) The angle 4/ being a constant appertaining to the instru-ment can be determined… … of coil B. The lag of / behind i can be determined from55) (only that in this case we do not get <p but <p—40> sothat all the data required for the correction are known.Formula 56) can also be written afc follows: w = w 1 + tan2 4*1 + tan 4 tan <p? from which it will be seen that there…
Electric power production
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