A-C Resistance of Segmental Cables in Steel Pipe
- 1 July 1949
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Transactions of the American Institute of Electrical Engineers
- Vol. 68 (2) , 816-834
- https://doi.org/10.1109/t-aiee.1949.5060018
Abstract
In recent years, there has been a very great increase in the use of pipe-type systems for long, high-voltage impregnated-paper transmission feeders. Thus, a detailed knowledge of the factors influencing the a-c losses of large size conductors with relatively low skin-proximity effect characteristics is of value to all cable and operating engineers. This paper reports the results of a study of the effective a-c resistance of a compact type of segmental conductor in sizes from 1,000,000 to 2,000,000 circular mils, in air and in steel pipe, with equilateral triangular and cradle configurations. From analysis of the data, an approximate separation is made of losses occurring in the conductor, the outer shield structure and the steel pipe. These component losses are compared with accepted and derived formulas, and application of the data is thus broadened by use of mathematical methods. Based upon the suggested methods of computation, tables are given of losses of cables in steel pipe over a range of conductor sizes and voltage ratings.Keywords
This publication has 7 references indexed in Scilit:
- Thermal Characteristics of a 120-Kv High-Pressure, Gas-Filled Cable InstallationTransactions of the American Institute of Electrical Engineers, 1948
- Reactance of Large Cables in Steel Pipe or ConduitTransactions of the American Institute of Electrical Engineers, 1948
- A-C Resistance of Large Size Conductors in Steel Pipe or ConduitTransactions of the American Institute of Electrical Engineers, 1948
- Problems in the Measurement of A-C Resistance and Reactance of Large ConductorsTransactions of the American Institute of Electrical Engineers, 1948
- Proximity effect in solid and hollow round conductorsJournal of the Institution of Electrical Engineers - Part I: General, 1941
- Eddy-current losses in multi-core paper-insulated lead-covered cables, armoured and unarmoured, carrying balanced 3-phase currentJournal of the Institution of Electrical Engineers - Part I: General, 1941
- Losses, Induced Volts and Amperes in Armor and Lead Cover of CablesTransactions of the American Institute of Electrical Engineers, 1909