This standard specifies the classification, technical requirements, test methods, inspection rules, and markings of live line work lifting tools. This standard is applicable to the lifting tools for live replacement of linear insulator strings on AC 110kV -750kV and DC 500kV lines. 2 Normative References: The clauses in the following documents become the clauses of this standard through the reference surface of this standard. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. Therefore, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB/T 2900.55 Electrotechnical Terminology, Live Working (GB/T 2900.55-2002.eqv IEC 60050-651; 1999) GB/T 3077 Alloy Structural Steel GB/T 3191 Aluminum and Aluminum Alloy Extruded Bars GB/T 12361 General Technical Conditions for Steel Die Forgings GB/T 13398 Hollow Insulating Tubes for Live Working, Foam filled insulating pipe and solid insulating rod (GB 13398-2008, IEC 60885:1985, MOD) GB/T 14286 Terminology of live working tools and equipment (GB/T 14286-2008, IEC 607432001, MOD) GB/T 16927.1 High voltage test technology Part 1: General test requirements (GB/T 16927.1-1997, eqv IEC 60060-1: 1989) GB/T18037 Basic Technical Requirements and Design Guidelines for Live Working Tools DL/T 876 Insulation Coordination Guidelines for Live Working DL/T 878 Insulation Tool Testing Guidelines for Live Working DL/T 976 Preventive Testing Regulations for Live Working Tools, Devices and Equipment YB 3207 General Technical Conditions for Forgings YB 3212 General Technical Conditions for Heat Treatment Parts 3 Terms and Definitions GB/T 2900.55 and GB/T 14286, as well as the following terms and definitions, are applicable to this standard. 3.1 Wire holding tools are tools used to replace the mechanical load and electrical insulation strength of the wires borne by linear insulator strings for wire lifting operations. It has metal hangers at both ends and a length adjustment mechanism, with an insulating component in the middle. 3.2 Tighten up device is a device that can adjust the connection length of the lifting tool when lifting (or loosening) conductors on overhead power lines. Generally, it is a threaded structure
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