Thermal Characteristics of Reeled Trailing Cables for Shuttle Cars

Kovalchik, P.G.; Duda, Filip; Cole, Gregory P.

doi:10.1109/imec.1994.714117

Cited by 3 publications

(1 citation statement)

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“…A previous study conducted by the U.S. Bureau of Mines (USBM) supported ICEA efforts to establish appropriate derating factors for reeled coal mine trailing cables [3]. Empirical and theoretical models were established to simulate a variety of T. H. Dubaniewicz, Jr., P. G. Kovalchik test conditions, including those that cannot be conducted in the laboratory.…”

Section: Introductionmentioning

confidence: 99%

Distributed measurement of conductor temperatures in mine trailing cables using fiber-optic technology

Dubaniewicz

Kovalchik²,

Scott³

et al. 1998

IEEE Trans. on Ind. Applicat.

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Mine trailing cables operated above safe thermal limits can cause premature insulation failure, increasing electrocution and fire hazards. Previous U.S. Bureau of Mines Pittsburgh Research Center research showed that, under static test conditions, electrical current levels permitted under present regulations may not limit cable temperatures to less than the 90 C rating of reeled trailing cable. Continuing research under the National Institute for Occupational Safety and Health (NIOSH) addresses thermal characteristics of reeled trailing cable under dynamic test conditions more representative of field conditions, where operators constantly reel in and pay out cable. This research is in support of efforts by industry associations and the Mine Safety and Health Administration to establish safety guidelines for cyclically rated reeled machines. This paper describes a unique approach to measuring temperatures within reeled cable under dynamic test conditions. Fiber-optic sensors embedded within the metallic conductors measure temperatures at 1-m intervals along the entire length of cable. Temperature measurements arereported to be accurate to within 61 C. The test setup requires access to only one end of the trailing cable, allowing researchers to freely reel in and pay out cable while temperature measurements are made, simulating field conditions. Manufacture of a fiberoptic-embedded trailing cable is described, along with initial test results that indicate the fiber-optic approach is viable.

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Section: Introductionmentioning

confidence: 99%