ASTM_D_1050_-_05_2011.pdf

Designation:D105005(Reapproved 2011)Standard Specification forRubber Insulating Line Hose1This standard is issued under the fixed designation D1050;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification covers acceptance testing of rubberinsulating line hose for use as a portable protective device forprotection of workers from accidental contact with live elec-trical conductors.1.2 Two types of line hose are provided and are designatedas Type I,non-resistant to ozone,and Type II and Type III,resistant to ozone.1.3 Five classes of line hose,differing in electricalcharacteristics,are provided and are designated as Class 0,Class 1,Class 2,Class 3,and Class 4.1.4 Fourstylesoflinehose,differingindesigncharacteristics,are provided and are designated as Style A,Style B,Style C,and Style D.1.5 The following precautionary caveat pertains only to thetest method portion,Sections 16,17,18,19,of this specifica-tion:This standard does not purport to address all of the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.For specific precautionary statements,see 18.1.1.2.Referenced Documents2.1 ASTM Standards:2D297 Test Methods for Rubber ProductsChemical Analy-sisD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD570 Test Method for Water Absorption of PlasticsD573 Test Method for RubberDeterioration in an AirOvenD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Thermoplastic ElastomersD2865 Practice for Calibration of Standards and Equipmentfor Electrical Insulating Materials TestingF819 Terminology Relating to Electrical Protective Equip-ment for Workers2.2 Federal Specification:3PPP-B-636 Box,Shipping,Filterboard2.3 ANSI Standards:4C 2 National Electrical Safety Code,Section 44C 39.5 Safety Requirements for Electrical and ElectronicMeasuring and Controlling InstrumentationC 84.1Electric Power Systems and Equipment-VoltageRatings3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 breakdownthe electrical discharge or arc occurringbetween the electrodes and through the equipment being tested.3.1.2 flashoverthe electrical discharge or arc occurringbetween electrodes and over or around,but not through,theequipment being tested.3.1.3 electrical testing facilitya location with qualifiedpersonnel,testing equipment,and procedures for the inspectionand electrical testing of electrical insulating protective equip-ment.3.1.4 electrode clearancethe shortest path from the ener-gized electrode to the ground electrode.3.1.5 insulatedseparated from other conducting surfacesby a dielectric substance(including air space)offering a highresistance to the passage of current.NOTE1When any object is said to be insulated,it is understood to beinsulated in a suitable manner for the conditions to which it is subjected.Otherwise,it is,within the purpose of this definition,uninsulated.1This specification is under the jurisdiction of ASTM Committee F18 onElectrical Protective Equipment for Workers and is the direct responsibility ofSubcommittee F18.25 on Insulating Cover-Up Equipment.This standard replacesANSI Standard J 6.1,which is no longer availableCurrent edition approved Sept.1,2011.Published September 2011.Originallyapproved in 1949 as D1050 49 T.Last previous edition approved in 2005 asD1050 051.DOI:10.1520/D1050-05R11.2For 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.3Available from Standardization Documents,Order Desk,Bldg.4,Section D,700 Robbins Ave.,Philadelphia,PA 19111-5094,ATTN:NPODS.4Available from American National Standards Institute,11 West 42nd Street,13th Floor,New York,NY 10036.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Insulating covering of conductors is one means of making the conductorinsulated.3.1.6 isolatedan object that is not readily accessible topersons unless special means of access are used.3.1.7 ozonea very active form of oxygen that may beproduced by corona,arcing,or ultra-violet rays.3.1.8 ozone cutting and checkingthe cutting action pro-duced by ozone on rubber under mechanical stress into a seriesof interlacing cracks.3.1.9 rubbera generic term that includes elastomers andelastomeric compounds,regardless of origin.3.1.10 voltage,maximum usethe ac voltage(rms)rating ofthe protective equi