APPLICATION OF THYRISTORS IN RAILWAY TECHNOLOGY: CONSEQUENCES AND REMEDIES. STUDY OF INTERFERENCE IN TELECOMMUNICATIONS LINES INCLUDING DATA TRANSMISSION WITH AC TRACTION
Purpose: designed tests have been carried out in order to better understand the interference phenomena between overhead line and telecommunications line. These tests have shown the following situation: 1. The interference current does not necessarily constitute a criterion for the psophometric voltage in the telecommunication line since the coupling admittance of the interference medium as a function of frequency is not constant. 2. The resonance in the overhead line at and near the resonant frequency strongly reduces the coupling admittance of the interference medium os that these frequency components substantially govern the psophometric voltage. And 3. The peak value of the transverse voltage, and thus the error rate in data transmission, does not, like the psophometric voltage, increase proportionally with the length of exposure.
- Restrictions on the use of this document are contained in the explanatory material.
International Union of RailwaysOffice of Research and Experiments
- Publication Date: 1977-4
- Features: Figures; References; Tables;
- Pagination: 46 p.
- TRT Terms: Communications; Data communications; Interference; Signaling; Telecommunications; Thyristors
- Old TRIS Terms: Question a122; Thyristor control
- Subject Areas: Railroads;
- Accession Number: 00053244
- Record Type: Publication
- Source Agency: International Union of Railways
- Report/Paper Numbers: A 122/RP 22/E
- Files: TRIS
- Created Date: Feb 16 1978 12:00AM