NIOSHTIC-2 Publications Search

Operating lighting units on coal mine DC power systems.

Authors
Conroy GJ
Source
Coal mine illuminaton. Proceedings: Bureau of Mines technology transfer seminars. Pittsburgh, Pennsylvania, November 4, 1975; St. Louis, Missouri, November 6, 1975; and Denver, Colorado, November 11, 1975. Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 8709, 1976 Jan; :33-44
NIOSHTIC No.
10000283
Abstract
Fluorescent, mercury-arc, and sodium-vapor lamps for coal mine face illumination, when powered from dc lines, usually utilize solid-state power supplies. The 300-vdc or 600-vdc electric power from the lines varies widely in level and often contains high-voltage transients that can cause temporary blackouts or permanent damage to the lighting systems. These problems must be guarded against by power-supply design. In this paper, power-supply designs utilized in various present lighting applications are discussed, and the available transient-protection techniques are described.
Keywords
Mining; Mining industry; Underground mines; Underground mining; Illumination
Publication Date
19760101
Document Type
IH; Conference/Symposia Proceedings
Fiscal Year
1976
NIOSH Division
PRC
Source Name
Coal mine illuminaton. Proceedings: Bureau of Mines technology transfer seminars. Pittsburgh, Pennsylvania, November 4, 1975; St. Louis, Missouri, November 6, 1975; and Denver, Colorado, November 11, 1975
State
CO; MO; PA
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division