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Concerns about the present derating factors used for reeled trailing cables prompted researchers at the NIOSH to determine new derating factors for reeled coal mining trailing cables.
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2/1/2007 - Peer reviewed journal articlesThis paper describes three mechanical methods - the mobile manipulator, the in-mine hoist, and a cable-handling system - developed by NIOSH to reduce injuries related to handling supplies or material, loading and unloading, and moving power cables.
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9/1/2006 - Peer reviewed journal articlesThere are potential detrimental effects of capacitance charging currents during line-to-ground faults in mine power distribution systems. A representative mine power system is modeled, and simulations with faults at various locations are conducted.
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3/1/1998 - Peer reviewed journal articlesMine trailing cables operated above safe thermal limits can cause premature insulation failure, increasing electrocution and fire hazards. This paper describes an approach to measuring temperatures within reeled cable under dynamic test conditions.
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7/16/2016 - Contracts and cooperative agreementsA contract to assess the suitability of current power line communication methods (used in nonmining applications) for underground coal mine communication, using mine electrical power distribution conductors as a system backbone.
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3/1/2001 - Peer reviewed journal articlesCoal miners often handle heavy electrical power cables, weighing up to 10 kg per meter. These cables are manually lifted and attached to the mine roof to prevent damage from mobile underground equipment.
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10/1/1997 - Conference papersA method is described to determine dynamically the conductor temperature of reeled shuttle car cables using fiber optics technology.
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1/1/1993 - Reports of InvestigationsThe 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 conceptuali...
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Content source: National Institute for Occupational Safety and Health, Mining Program