Designation: F2973 − 16Standard Specif i cation forInsulating Lifting Links for Load Lifting Equipment WorkingNear Energized Power Lines 1This standard is issued under the f i xed designation F2973; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (´) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specif i cation covers insulating lifting links used forprotection of workers positioning a load from accidentalcontact of the load lifting equipment with live electricalconductors, apparatus, and circuits.1.2 This specif i cation includes design, material, and testingrequirements for the manufacturer and in-service inspection,testing and care requirements for the user or the agent of theuser.1.3 Insulating links whose primary application does notpertain to power line electrical safety are not within the scopeof this specif i cation.1.4 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards: 2E4 Practices for Force Verif i cation of Testing MachinesF819 Terminology Relating to Electrical Protective Equip-ment for Workers2.2 IEEE Standard: 3IEEE 4 Standard Techniques for High-Voltage Testing2.3 ISO Standard: 4ISO 7500–1 Metallic Materials—Verif i cation of Static Uni-axial Testing Machines—Part 1: Tensile TestingMachines—Corrigendum3. Terminology3.1 Def i nitions—Terminology used in this specif i cation is inaccordance with Terminology F819.3.2 Def i nitions of Terms Specif i c to This Standard:3.2.1 design verif i cation test, n—test made on a sampletreated as representative of an industrial product.3.2.2 electrical test, n—a test ensuring that a product meetsthe minimum electrical requirements of the standard.3.2.3 f l ashover, n—a disruptive discharge over the surface ofthe insulating link.3.2.4 mechanical test, n—a test conf i rming that a productmeets the minimum mechanical requirements of a standard.3.2.5 proof load, n—specif i c mechanical load applied in theperformance of the proof load test.3.2.6 proof test, n—mechanical and electrical tests per-formed by the manufacturer on all production units.3.2.7 puncture, n—disruptive discharge through an insula-tor.3.2.8 qualif i ed personnel, n—personnel who, by possessionof a recognized degree, certif i cate, professional standing, orskill, and who, by knowledge, training, and experience, havedemonstrated the ability to deal with problems relating to thesubject matter, the work, or the project.3.2.9 rated load, n—the maximum working load.3.2.10 visual inspection, n—visual check made to detectdefects that impede the performance of a product(s).4. Materials and Manufacture4.1 The mechanical design factor shall not be less than 5.0times its rated load for ratings up to 100 tons and 4.0 timesrated load for ratings 100 tons and up.1 This specif i cation is under the jurisdiction of ASTM Committee F18 onElectrical Protective Equipment for Workers and is the direct responsibility ofSubcommittee F18.55 on Inspection and Non-Destructive Test Methods for AerialDevices.Current edition approved Oct. 1, 2016. Published November 2016. Originallyapproved in 2014. Last previous edition approved in 2015 as F2973 – 15. DOI:10.1520/F2973-162 For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at service@astm.org. For Annual Book of ASTMStandards volume information, refer to the standard’s Document Summary page onthe ASTM website.3 Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE),445 Hoes Ln., Piscataway, NJ 08854, http://www.ieee.org.4 Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http://www.ansi.org.Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1
