1、Designation: B1004 16Standard 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 las
2、t 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) electricalcont
3、act 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 pow
4、erapplications.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 speci
5、fying theperformance of connection systems for specializedapplications, 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
6、 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 includ
7、ing 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 Met
8、hods 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. Termin
9、ology3.1 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 etch
10、ed 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
11、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 conn
12、ection 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
13、, 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.Copyrig
14、ht ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. Performance Classification Practice4.1 The performance specification (or reporting) statementconsists of an alphabetic classification, a brief statement of theintended conditions of use, and
15、, 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
16、 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. Forcritica
17、l 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 copper wiring, dry lo
18、cations, 0.05 ohm, StandardXXXX.”4.1.2 Class B-xxA connection system for which the resis-tance is predicted to be nonincreasing for a defined minimumnumber (“xx”) of years under the intended conditions of use,when installed in accordance with the manufacturers instruc-tions. The classification, the
19、predicted life in years, the in-tended use, and a reference to the published standard(s) ormethod(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 bo
20、undary that is considered to be accept-able for the particular application.4.1.2.1 Example of use: “Class B-25, for low-voltage un-derground direct burial cable splices, Method YYYY.”4.1.3 Class CA connection system for which no predic-tion of performance is made for the intended conditions of use.4
21、.1.3.1 Example of use: “Class C, for boat trailer lighting.”4.2 A given connection system may have different perfor-mance classifications for different applications.5. Significance and Use5.1 This practice is based on the use of electrical resistanceas an indicator of contact performance. This is th
22、e fundamentalphysical attribute that reflects the condition of the electricalcontact interface(s) within a connection. For practical current-carrying electrical connections, resistance may be calculatedfrom potential drop measurements, as described, for example,in Test Method B539 and B812.5.2 This
23、practice accommodates the use of multiple testmethods, as may be required to predict performance in a givenapplication.5.3 This practice applies only to the performance of thecurrent-carrying contact interface(s). It does not characterizethe performance of insulating materials or other components of
24、a complete connection system.5.4 Specifiers may use the performance classification as arequirement for a given application.5.5 Manufacturers may use the performance classification toreflect the relative quality of their products.6. Precision and Bias6.1 Precision and bias are those of the test metho
25、d(s)applied.7. Keywords7.1 conductor; connection resistance; connector; contact;electrical connection system; electrical contact; metallic; per-formance classification;ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin t
26、his standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must
27、be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of there
28、sponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700,
29、West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 162
