In order to facilitate professionals engaged in overhead contact system in electrification railway to accu-rately understand and use of TB/T 3252-2022 Overhead conductor rail and fittings for rigid overhead contact system in electrification railway,this article introduces the revision background,revision principles,and main revision con-tent of TB/T 3252-2022,analyzes the technical indicators and related test items of overhead conductor rail and fit-tings for rigid overhead contact system added in TB/T 3252-2022.It is necessary to provide normative documents for improving the quality and technical level of overhead conductor rail used overhead contact system in electrified rail-way in China after TB/T 3252-2022 is released.
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