Page 591 - Handbook of Electrical Engineering
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584    HANDBOOK OF ELECTRICAL ENGINEERING

                  reactances between 15% and 25%, and for motors up to about 15 MW. The main parameter of the
                  motor is the starting-to-running current ratio, which should not fall below 4 for the extrapolation
                  to be valid.
                       The results can be represented in a more comprehensive manner by using a nomograph,
                  as shown in Figures G.5, 6, 7 and 8. Each nomograph caters for four different starting-to running
                  current ratios, i.e. 4, 5, 6 and 7. References 1 and 2 describe how to draw a nomograph.



              REFERENCES
              1. Alexander S. Levens, Nomographs. John Wiley & Sons (1948 and 1959). Library of Congress Card No. 59-
                 11819.
              2. S. Brodetsky, A first course in nomography. G. Bell and Sons Ltd (reprinted 1938).
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