PROTECTION OF INSTALLATIONS AND ELECTRIC MOTIVE POWER UNITS AGAINST THE EFFECTS OF OVERVOLTAGES. DEFINITION OF THE CONSTITUENT PARTS OF THE EQUIPMENT TO BE PROTECTED AGAINST OVERVOLTAGES

During the revision of its Programme of Work in 1963, the Specialists Committee found that its studies were possibly too focused on the investigation of the characteristics and the behaviour of the various types of arresters, and, in particular, on the the horn type arrester. Under these conditions, it was, in fact, feared that certain important aspects of the problem would not be examined, because it was considered from too narrow an angle. This was why, inter alia, the question was raised concerning the earthing of the masts of the overhead equipment; this has a certain influence of the protection of the overhead contact systems and it can even be stated that earthing constitutes an essential part of this protection. In view of these considerations, the Specialists Committe decided that a new Chapter should be added to the first part of the new Programme of Work; this Chapter should deal with the definition of the constituent elements of the protective system for overhead contact systems, sub-stations and motive power units. This had led us to give, in this Chapter, some indications concerning the origin of the various types of the voltage surges, their order of magnitude, their propagation and also the danger they cause to the installations and electric traction engines. The study in question does not claim to be complete. It should rather be considered as informatory and as a basic document for the studies in progress. As the study of the protection of alternating current traction devices has already been described in an ORE report, the present report will deal with the problems involved in the protection of direct current traction devices.

• Supplemental Notes:
  • Restrictions on the use of document are contained in the explanatory material.
• Corporate Authors:

  International Union of Railways

  Office of Research and Experiments
  Utrecht,   Netherlands 
• Publication Date: 1966-10

Media Info

• Pagination: 19 p.

Subject/Index Terms

• TRT Terms: Catenaries (Railroads); Overvoltage; Railroad electrification
• Old TRIS Terms: Ground currents; Overvoltage arresters; Question a50
• Subject Areas: Construction; Railroads;

Filing Info

• Accession Number: 00052692
• Record Type: Publication
• Source Agency: International Union of Railways
• Report/Paper Numbers: A50/RP 7/E
• Files: TRIS
• Created Date: May 14 1976 12:00AM