A Coordination-Free Ground-Fault Relay for AC Mine Distribution Systems

Frederick C. Trutt, Hemant G. Rotithor, Jeffrey L. Kohler

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


A brief review of the coordination-free ground-fault protection concept is presented, followed by a discussion of major design considerations. The actual design of a coordination-free relay system is then described along with laboratory test results. Based upon this information, conclusions are drawn relating to performance in typical mining situations.

Original languageEnglish (US)
Pages (from-to)819-823
Number of pages5
JournalIEEE Transactions on Industry Applications
Issue number5
StatePublished - 1989

All Science Journal Classification (ASJC) codes

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

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