Abstract:
For pt.I see ibid., vol.14, no.3, p.705-14 (1999). Cables crossing other heat sources either perpendicularly or at oblique angles will experience a rise in conductor temp...Show MoreMetadata
Abstract:
For pt.I see ibid., vol.14, no.3, p.705-14 (1999). Cables crossing other heat sources either perpendicularly or at oblique angles will experience a rise in conductor temperature which should result in ampacity derating. In the first part of the paper a mathematical model for calculation of derating factors was presented. In this paper, a practical numerical example is considered with a 138 kV pipe-type cable crossing a 10 kV distribution circuit. The numerical analysis presented confirms experimental findings reported in the literature that the cable crossing may elevate conductor temperature by as much as 20/spl deg/C.
Published in: IEEE Transactions on Power Delivery ( Volume: 14, Issue: 3, July 1999)
DOI: 10.1109/61.772305
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1.
G.J. Anders, Rating of Electric Power Cables ̵ Ampacity Calculations for Transmission Distribution and Industrial Applications, McGraw-Hill, IEEE Press, 1998.
2.
G.J. Anders and H. Brakelmann, "Cable Crossings-Derating Considerations", Part I: Development of Derating Equations̶ ̵ companion paper.
3.
T. Hollands, "Literature on longitudinal heat transfer for oil or air in pipes", private communication.
