Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 335
rding Wattmeters 329 alternating currents the reading obtained by multiply-ing together the amperes and volts does not representthe true wattage of the circuit unless the load is non-inductive. For inductive loads a wattmeter must beused, but it is well to take both the wattmeter and thevolt-ampere… … Figure 195 This method is objectionable where the shunt coil ofthe meter under test is connected directly across themains as the shunt coil of the standard wattmeter issubject to the variation in voltage between the neutraland the outside wires. To overcome this objection amultiplier may be used in…
Electrical engineering · Electric testing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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