File:A theoretical investigation of transformer design (1912) (14760700896).jpg

Identifier: theoreticalinves00colv (find matches)
Title: A theoretical investigation of transformer design
Year: 1912 (1910s)
Authors: Colville, John Robert Connell, Edwin Lewis
Subjects: Electric transformers Theses
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Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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loss, copper loss, total loss, reactance and magnetizing current. The crossing point of the two loss curves is taken as the design condition desired. These two sets of curves, Fig. 12, 13, 14 were calculated for two i o voltages, 1100 and 3300 for theAK. V. A. and 1100 and 4400 for the 30 K. V. A.The results show that the volts per turn are almost independent of the voltage.U3ing a 20 : 1 ratio, calculations were then made for four different valuesof volts per turn for each of five different capacities, viz., 10, 20, 30,40, and 50 K. V. A. The results are given graphically in curves, Fig. 15,16, 17, 18, and 19. With the volts per turn for equal copper and iron lossesas taken from these curves, i. e., from the point of intersection of ironloss-curve and copper loss-curve, a curve was plotted between K. V. A.capacity and volts per turn, see Fig. 20. The equation of this curve is theformula sought. The curve is a parabola represented by the following simple equation, V = 1.22 VK. V. A. T
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