Electrical instruments and testing; how to use the voltmeter, ohmmeter, ammeter, potentiometer, galvanometer, the Wheatstone bridge, and standard portable testing sets (1907)
Schneider, Norman H. (Norman Hugh), Hargrave, Jesse · New York, Spon & Chamberlain; [etc., etc.] · leaf 81
rd instrument in Fig. 43, many othertypes being manufactured. For direct current work only an electro-magneticsystem is used. The ammeters of this type havea uniform drop of .05 volt. Shunts are thus inter-changeable. 58 ELECTRICAL INSTRUMENTS. Ammeter Shunts. The ammeter shunts usedwith Weston… … Fig. 44. Large clamping screws are provided for attach-ment of the shunt to the bus-bar, which latter areinserted in the large slots at each end of the shunt.The small screws are for the instrument cords. The Whitney shunt, Fig. 45, is made of a solidblock of metal slotted as shown so as to give…
Electric testing · Electric apparatus and appliances
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