Sensitive Ground-Fault Relaying

Thomas Novak, Lloyd A. Morley

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Interest has been generated in recent years about sensitive ground-fault relaying on the utilization portions of industrial power systems. Sensitive ground-fault protection refers to the concept of detecting low levels of ground-fault current that might cause an electrocution in any human that could be part of the ground-current path. Research has provided a background into the needs and requirements for this kind of protection and subsequent work has resulted in zero-sequence devices for three-phase industrial utilization systems and a saturable-transformer device for dc utilization. The importance and requirements for sensitive ground-fault protection are reviewed. Relaying schemes for both ac and dc systems are also presented. This work is projected at mine power systems, but the material is likely applicable to any portable low-voltage portion of industrial power systems that involve personnel handling.

Original languageEnglish
Pages (from-to)853-861
Number of pages9
JournalIEEE Transactions on Industry Applications
Issue number5
StatePublished - 1988

Bibliographical note

Funding Information:
Paper PID 8748, approved by the Mining Industry Committee of the IEEE Industry Applications Society for presentation at the 1985 Industry Applications Society Annual Meeting, Toronto, ON, Canada, October 6- 11. Manuscript released for publication December 13, 1987. This work was supported by the U.S. Bureau of Mines under Contract J0134024.

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


Dive into the research topics of 'Sensitive Ground-Fault Relaying'. Together they form a unique fingerprint.

Cite this