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Feasibility Study of a Differential Current Ground Fault or Leakage Current Sensor for Direct Current Offtrack Machines.
Perron-RR; Martin-PG; Lipoff-SJ
NTIS: PB/265-320 Available for Reference At Bureau Libraries :58 pages
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.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB/265-320 Available for Reference At Bureau Libraries
A. D. Little, Inc.
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division