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Practical Calculation of Transmission Lines: For Distribution of Direct and Alternating, Currents By Means of Overhead, UnderGround, and Interior ... Light, Power, and Traction (Classic Reprint)
by:L. W. Rosenthal
This little book is offered to the engineering profession with the hope that it may be of practical help in the rapid and accurate calculation of transmission lines. I ts existence is the outcome of the belief that this field is in part barren. I ts chief mission is to substitute a direct solution for the trial method which was formerly a necessary evil....
This little book is offered to the engineering profession with the hope that it may be of practical help in the rapid and accurate calculation of transmission lines. I ts existence is the outcome of the belief that this field is in part barren. I ts chief mission is to substitute a direct solution for the trial method which was formerly a necessary evil. The arrangement of the formulas, tables and text has been dictated solely by the needs of the rapid worker. All sections except the last include the important effects of temperature and specific conductivity. The section relating to direct-current railways is novel in the form of its tables, and the methods outlined in it have been found rapid and comprehensive. The alternating-current division presents a new and original method for the solution of these problems. It is the only method known to the author which determines the size of wire directly from the volt loss in the line, and it also possesses unique features of scope, accuracy and simplicity. The chapter on single-phase railways is in accord with most of the consistent data published on the subject, although further accurate investigations of installed lines may modify to some extent the present accepted values. The author desires to call particular attention to the fallacies of some familiar methods of calculating alternating-current transmission lines which heretofore have been in common use. It will be evident from Tables 11, 28, and 36 that their results are wholly erroneous under certain practical conditions, and indicate wires which may be entirely at variance with the specified requirements. The scope of this book has been confined to methods of calculation. Hence, the most desirable limits of line losses are not discussed, but the tables are sufficiently extended to cover all cases likely to arise in practice. There is no discussion of the ch(Typographical errors above are due to OCR software and don't occur in the book.)
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