DocumentCode :
1363457
Title :
Thermal characteristics of energized shielded drag and an unshielded reeled trailing cable
Author :
Yenchek, Michael R. ; Kovalchik, Peter G.
Author_Institution :
US Bur. of Mines, Pittsburgh, PA, USA
Volume :
27
Issue :
4
fYear :
1991
Firstpage :
791
Lastpage :
796
Abstract :
Research to determine the relationship between current load and temperature rises in shielded and reeled coal mine trailing cables is discussed. Temperatures within and on the cables were measured with thermocouples and the data recorded over time by computer. Steady-state DC load tests with two type SHD-GC cables revealed that only 3 to 7% more current than the Insulated Cable Engineers Association (ICEA) ratings for shielded cables was required to reach rated insulation temperature. The ability of the metallic shielding to absorb heat was reflected in longer thermal time constants than with unshielded designs. Steady-state temperature rises were monitored in a two condition unshielded, flat cable wound on a shuttle car cable reel. Stabilized axial temperature profiles exhibited maxima midway between the reel flanges. Static derating factors, expressed as percentages of open-air ampacity, were considerably less than ICEA ratings for reeled cables. The findings support a tentative contention that deratings for trailing cables wound on reels should be based on the specific cable configuration
Keywords :
magnetic shielding; power cables; ICEA; Insulated Cable Engineers Association; current load; derating factors; energized shielded drag; metallic shielding; rated insulation temperature; reel flanges; steady-state DC load tests; temperature rises; thermal characteristics; unshielded reeled trailing cable; Cable insulation; Cable shielding; Condition monitoring; Flanges; Insulation testing; Steady-state; Temperature measurement; Temperature sensors; Time measurement; Wounds;
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/28.85497
Filename :
85497
Link To Document :
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