Electrical installations of electric light, power, traction and industrial electrical machinery (1902)
Kennedy, Rankin, d. 1917 · Edinburgh T.C. & E.C. Jack · leaf 93
ampere balances,these instruments being correct and unalterable. The balance ishere illustrated (Fig. 86). All Kelvin balances are described inVol. II. For larcfe switchboards instruments are made with scales edo-e- Switchboard I nstruments wise so that a number can be ranged close together, as in… … 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…
Electrical engineering · Electric power
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