Abstract：Research purposes: The research is made on the cause for the wear and breaking of catenary of electrified railway and its preventive measures, especially for aluminum covering steel wire and aluminum covering copper wire or copper alloy catenary.
Research methods: The analysis is made for the present situation of catenary of overhead contact wire system and main measures against wear of it.
Research results: The main technical measures against wear of catenary are proposed, that are to tie up continuously with single iron wire, match the surface hardness of hanging pulley with that of catenary and use auxiliary cable suspension catenary and preformed protection line for catenary.
Research conclusions: The structure of double cantilevers and special design should be adopted to turnout mast for the purpose of avoiding wear between catenaries, improving suspension structure of catenary and allowing usage of preformed protection line for catenary. Application of preformed protection line is an effective technical measure for solving the problem of wear.
2006, Vol. 23 
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