Details:

Personal Author:
Yenchek, M. R. (Michael R.) ; Cole, Gregory P. ; Edwards, John C.
Yenchek, M. R. (Michael R.) ; Cole, Gregory P. ; Edwards, John C. Less -
Corporate Authors:
United States. Bureau of Mines.
Description:
"The U.S. Bureau of Mines investigated the performance of portable power cables under transient conditions. This research had a twofold purpose: (1) to define the thermal characteristics of electrically overloaded trailing cables, and (2) to conceptualize electrical protection for cables that allows maximum cable efficiency without diminishing electrical safety in underground mines. Several tasks were undertaken in support of these goals during the 3-year research effort. Overload tests ranging from 2 to 12 times rated ampacity were conducted in the Bureau's Mine Electrical Laboratory. Two thermal models of energized type G-GC trailing cables were constructed, one based on thermodynamic theory and the other using empirical data from previous Bureau load tests. The empirical model was then incorporated into an interactive computer program that can assist designers and approvers of mining machines in selecting the appropriate size trailing cable. This program can be the basis for a cable protection system that ensures that cables are not the source of fires, ignitions, burns, or explosions underground." - NIOSHTIC-2

NIOSHTIC no. 10004055


Subject:
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Coal-mining Machinery--Electric Equipment--Protection.
Electric Cables--Thermal Properties--Mathematical Models.
Electric Currents--Heating Effects--Mathematical Models.

Series:
Report of investigations (United States. Bureau of Mines) ; 9463
Document Type:
Report
Collection(s):
National Institute for Occupational Safety and Health
Main Document Checksum:
[+]
urn:sha256:8c9cfbe950cccca26500bdd2724e2be7c0b83f4ba69712ddcfd52540838382a2
File Type:

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