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Feasibility Study of a Differential Current Ground Fault or Leakage Current Sensor for Direct Current Offtrack Machines.

Authors
Perron-RR; Martin-PG; Lipoff-SJ
Source
NTIS: PB/265-320 Available for Reference At Bureau Libraries :58 pages
Link
NIOSHTIC No.
10001209
Abstract
The results of a study and laboratory evaluation of a hall-type device, as a sensor for monitoring low-level DC leakage currents in grounding conductors of offtrack machines, are described. The report also contains schematic and logic diagrams for a DC ground fault interrupter system using a microprocessor and digital differentiating techniques to detect sudden changes in DC leakage of 15 milliamperes or more, and appropriate logic to give warning signals or trip the load circuit-breaker when leakage becomes excessive.
Publication Date
19760101
Document Type
CP; Final Contract Report;
Fiscal Year
1976
NTIS Accession No.
PB-265320
NTIS Price
A05
Identifying No.
OFR 63-77
NIOSH Division
PRC;
Source Name
NTIS: PB/265-320 Available for Reference At Bureau Libraries
Performing Organization
A. D. Little, Inc.
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