Technical Reports

Conductive Interference in Rapid Transit Signalling Systems, Volume II: Suggested Test Procedures

  • 01
  • May
  • 1987
AUTHOR: U.S. DOT Research and Special Programs Administration
OFFICE: RPD
REPORT NUMBER: DOT-TSC-UMTA-86-7
SUBJECT: Best Practices
KEYWORDS: Conductive EMI, Rail System EMI, EMI Measurements
ABSTRACT: Methods for detecting and quantifying the levels of conductive electromagnetic interference produced by solid state rapid transit propulsion equipment and for determining the susceptibility of signaling systems to these emissions are presented. These methods include procedures for taking measurements in the field, in the laboratory and on track circuits. As background, the mechanisms of conductive electromagnetic interference are described, as are audio-frequency track circuits and solid-state propulsion control. Recording and documentation procedures for applying these suggested test procedures are provided. Appendix A contains definitions of terms and systems of units. Appendix B contains sample outputs of tests using inductive recommended practices.

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