International Library of Technology · Scranton, International Textbook Co. · leaf 105
connect-ing the. potential coil/ and the resistances rlf r2, and r3should be noted. Theseresistances are connect-ed as shown in order toobtain an artificial neu-tral point, similar to thecommon connection ofa Y-connected three-phase armature. Thiscombination of resist-ances is sometimescalled a Y… … Meter Field po\_flfio r3 r^ra T4 nh. Fig. 45. 92 ELECTRIC TRANSMISSION. 14 106. Fig. 45 shows how to connect a Thomson record-ing wattmeter with its Y resistance so as to measure thepower on a balanced three-phase circuit. The recordingmeters are so calibrated that their reading multipliedby the…
Electrical engineering
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