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Mine Power Distribution. Proceedings: Bureau of Mines Technology Transfer Seminar, Pittsburgh, Pennsylvania, March 19, 1975.

Authors
Anonymous
Source
NTIS: PB 250 748 :114 pages
Link
NIOSHTIC No.
10008067
Abstract
The papers contained herein summarize results of various recent Bureau of Mines investigations in the area of mine power distribution systems. They are based on information from Bureau personnel, contractors and grantees, and the Mining Enforcement and Safety Administration. Conclusions drawn from a series of parameter measurements on mine power systems, taken over a 3-year span, are presented. Personnel and equipment hazards due to faults on isolated, solidly grounded, and resistance grounded three-phase systems are discussed. Two papers cover DC applications of circuit breakers, including a novel protection scheme for trolley lines. The methods of suppressing induced arcing currents and voltages in a- c machines are evaluated. An evaluation program for ground monitors is described. Acceptance test procedures and the importance of various parameters for trailing cable splices are covered. A number of techniques for locating faults in trailing cables are described.
Publication Date
19750101
Document Type
IH; Information Circular;
Fiscal Year
1975
NTIS Accession No.
PB-250748
NTIS Price
A07
Identifying No.
IC 8694
NIOSH Division
PRC;
Source Name
NTIS: PB 250 748
State
PA;
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