ASTM_B_1004_-_16.pdf

Designation:B100416Standard Practice forContact Performance Classification of Electrical ConnectionSystems1This standard is issued under the fixed designation B1004;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 practice provides a method of specifying perfor-mance requirements for(or reporting test results of)electricalcontact and connection systems.Both conductor and connectorsystem performance may be specified by this practice,sepa-rately or in combination.1.2 This practice may be used for separable or permanentcontacts employing metallic conducting components.1.3 This practice is applicable to both signal and powerapplications.1.4 This practice is intended to be used for specifyingperformance of connectors and connection systems that aremarketed for general public and trade application,as forinstance for use in building wiring,electronics,and vehicles.1.5 This practice is not intended to be used to specifying theperformanceofconnectionsystemsforspecializedapplications,such as military,industrial,aircraft,powerdistribution,and medical apparatus.1.6 This practice does not specify the sample preparation ortest sequences required for determining contact performance.Itis the responsibility of the user of this practice to determine theapplied test sequence(s)appropriate for the application.1.7 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 become familiarwith all hazards including those identified in the appropriateSafety Data Sheet(SDS)for this product/material as provide bythe manufacturer,to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:2B539 Test Methods for Measuring Resistance of ElectricalConnections(Static Contacts)B542 Terminology Relating to Electrical Contacts and TheirUseB812 Test Method for Resistance to Environmental Degra-dation of Electrical Pressure Connections Involving Alu-minum and Intended for Residential Applications3.Terminology3.1 Terms used in this practice are defined in TerminologyB542 except as noted in 3.2.3.2 Definitions of Terms Specific to This Standard:3.2.1 conductor,nelectrically conductive member carry-ing current to a contact interface.Examples are wire and cable,busbar,and conductive paths on an etched printed circuitboard.3.2.2 connection performance,nthe condition and behav-ior of the contact interface(s)within the connection as indi-cated by electrical resistance and resistance change with timeunder the applied conditions.3.2.3 connection system,nthe completed electrical contactinterface and all associated parts,assembled as prescribed bythe manufacturer(s)for the intended service.3.2.4 intended conditions of use,nany combination ofapplied electrical,environmental,and other conditions associ-ated with the intended and rated application.3.2.5 nonincreasing,adjas applied to connection resis-tance values,mathematically,a series of numbers that arebounded above.1This practice is under the jurisdiction of ASTM Committee B02 on NonferrousMetals and Alloys and is the direct responsibility of Subcommittee B02.11 onElectrical Contact Test Methods.Current edition approved Oct.1,2016.Published October 2016.DOI:10.1520/B1004-16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Performance Classification Practice4.1 The performance specification(or reporting)statementconsists of an alphabetic classification,a brief statement of theintended conditions of use,and,for Class B only,the expectedminimum years of life in the intended application.Class A andClass B statements shall include reference to a publishedstandard or method by which the performance classificationhas been determined.4.1.1 Class AA connection system for which the resis-tance is predicted to be nonincreasing for an unlimited timeunder the intended conditions of use,when installed in accor-dance with the manufacturers instructions.The classification,the intended use,and a reference to the published standard(s)or method(s)used to determine the classification are stated.Forcritical applications(where life safety is a concern,for in-stance)users of this classification are advised to state theconnection resistance boundary that is considered to be accept-able for the particular application.4.1.1.1 Example of use:“Class A,for residential branchcircuit coppe