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Feasibility Study of the Use of Current Limiting Devices in Interruption and Sectionalizing the DC Circuits in Mines.

Authors
Hamilton-HB; Ramos-TJ
Source
NTIS: PB/256-541 Available for Reference At Bureau Libraries :150 pages
Link
NIOSHTIC No.
10001185
Abstract
The objective of this study was to determine the feasibility of using current limiting devices (cld) in switching heavy DC currents (1,200 and 600 amperes) at utilization voltages used in the mining industry (300 and 600 volts, nominal). Use of a cld in this application is based on its orders of magnitude change in resistance when it changes state (from liquid mercury to vapor) after being subjected to short-time, high-density current. Switching times on the order of 3 to 4 milliseconds have been obtained.
Publication Date
19760101
Document Type
CP; Final Contract Report;
Fiscal Year
1976
NTIS Accession No.
PB-256541
NTIS Price
A08
Identifying No.
OFR 94-76
NIOSH Division
PRC;
Source Name
NTIS: PB/256-541 Available for Reference At Bureau Libraries
Performing Organization
University of Pittsburgh
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