THE UNIVERSAL HIGH-SPEED SECTIONAL INSULATOR TS.N.I.I.7MA FOR THE CATENARY NETWORK OF ELECTRIC RAILROADS

UNIVERSAL'NYI VYSOKOSKOROSTNOI SEKTSIONNYI IZOLIATOR TS.N.I.I.7MA DLIA KONTAKTNOI SETI ELEKTRICHESKIKH ZHELEZNYKH DOROG

National and foreign experience on the elaboration and operation of sectional insulators for the catenary network of electrified railroads reveals that the most rational and reliable sectional insulators are those with polymer rod insulator inserts operating practically only upon the tension (with very small eccentricity of application of the tension from the pull of the catenary lead) and are not slide blocks of the sectional insulator. The TsNII7MA sectional insulator was developed with such insulating inserts: it is high-speed and universalized (unified) and can be applied on direct (3-6 kV) as well as alternating (15-25 kV) current, and also at junction stations. It is intended for installation in catenary suspensions with one as well as two catenary leads; and it ensures normal passage of the current collectors at speeds up to 160 km/hour (tested at speeds up to 180 km/hour). Its length is 2.9 m, its mass--31 kg. The essential advantage of this insulator over more perfected insulators presently used in the USSR and abroad is the presence of three pairs of long arc arresting horns which ensure its safe operation in emergency modes (during passage of the current collector along the insulator, when one of the sections of the catenary network is switched off or grounded), as well as with a significant variety of potentials in the sectionalized sections of the catenary network of both alternating and direct current. The sectional insulator TsNII7MA is a USSR invention; it has been patented in France and Iran.

  • Supplemental Notes:
    • Abstract only is available in English, original untranslated as of November 1976.
  • Corporate Authors:

    USSR Ministry of Railways

    Novo-Basmannaya, Ulitsa 2
    Moscow,   USSR 
  • Authors:
    • Goroshkov, Iu I
  • Publication Date: 1975

Language

  • Russian

Media Info

  • Features: Figures;
  • Pagination: p. 13-15
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00130302
  • Record Type: Publication
  • Source Agency: Federal Railroad Administration
  • Report/Paper Numbers: No. 2
  • Files: TRIS, USDOT
  • Created Date: Nov 23 1976 12:00AM