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Exact equation for calculation of sheath proximity loss of single-conductor cables

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1 Author(s)
Imai, T. ; Hitachi cable, Ltd., Marunouchi, Chiyoda-Ku, Tokyo, Japan

The sheath proximity loss of single-conductor cables is calculated by Miller's equation [1]. However, this equation involves a correction term which causes considerable error in calculated values for large-size, aluminum-sheathed cables. Taking the self-inductance of eddy current into account, the author has derived the exact equation. Miller's equation is no longer valid, especially for large-size, aluminum-sheathed cables.

Published in:

Proceedings of the IEEE  (Volume:56 ,  Issue: 7 )