Electrical installations of electric light, power, traction and industrial electrical machinery (1902)
Kennedy, Rankin, d. 1917 · Edinburgh T.C. & E.C. Jack · leaf 93
Fig. 86 —Kelvins Standard Ampere Balance the laboratory, having a long range and being equally correct on alternat-ing and continuous current. It can be used as a watt-meter, in whichcase it has the fixed coil of very fine wire and the moving one ofthick wire. The two coils (Fig. 89) are at right… … Fig. 87.—Edgewise Instruments on Large Switchboard. By Evershed & Vignoles zero, the force being measured by the torsion of a spring, as shownm illustration. It has a small amount of mutu.il induction betweenthe coils, from which arises a slight error on alternating measurementsof watts. In…
Electrical engineering · Electric power
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