Title :
Ampacity of aerial bundled cables
Author_Institution :
Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada
Abstract :
Problems associated with the proximity of buildings and trees and the clashing of bare conductors have stimulated the world-wide trend towards the use of insulated conductors (cables) for the overhead distribution of electric power. An IEC Guide, Publication 287-2, proposes a method for determining the current-carrying capacity of a single core or cable in still air, but does not include multicore cables or cables in moving air. This paper summarises recent work on the heat transfer from single and multi-core cables in conditions of natural or forced convection. It is shown that certain assumptions in the IEC Guide are incorrect, and a method is proposed for determining the ampacity of overhead cables under various atmospheric conditions
Keywords :
distribution networks; forced convection; natural convection; power cables; power overhead lines; IEC Guide; aerial bundled cables; ampacity; current carrying capacity; forced convection; heat transfer; insulated conductors; multicore cables; natural convection; overhead distribution lines; Bundle conductors; IEC; Power cable thermal factors; Power distribution lines;
Conference_Titel :
Electrical and Computer Engineering, 1994. Conference Proceedings. 1994 Canadian Conference on
Conference_Location :
Halifax, NS
Print_ISBN :
0-7803-2416-1
DOI :
10.1109/CCECE.1994.405633
