1、9009276 0039274 TL=k-9 ANSIIASTM D 119-78 AMERICAN SOCIETY FOR TESTING AND MATERIALS 1016 Raa St.Phllid*lphla.Pa.,10103 Reprinted Irom lhe Annurl Book of ASTM Strndrrdr.Copyright ASTM If not listed in the curnnt combined Index.will a w r r in the next&tion.Standard Specification for LOW-VO LTAGE RUB
2、 BER IN SU LAT I NG TAPE This standard is issued under the fixed designation D 119;the number immediately following the designation indicates the year of onginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.This s ecifica
3、tion has been approved for use by agencies of the Department of Defense and for listing in the DoD Index of Specikaiions and Standarb.1.scope 1.1 This specification covers low-voltage rubber insulating tape designed for splicing electrical wires and cables operating up to 2000 volts phase to phase i
4、n dry locations with conductor temperatures up to 75C(167F)for continuous operation,to 95C(203F)for emergency overload conditions,and to 150C(302F)for short circuit condi-tions.This tape is suitable for outdoor use,but must be overwrapped to protect from ozone attack and from ultraviolet radiation.T
5、his tape may be applied under an ambient temperature range of-10C(+14F)to+40C(104F).2.Applicable Documents 2.1 ASTM Standards:D 149 Tests for Dielectric Breakdown Volt-age and Dielectric Strength of Electrical Insulating Materials at Commercial Power Frequencies2 D297 Chemical Analysis of Rubber Pro
6、d-ucts3 D 41 2 Tests for Rubber Properties in Ten-sion4 D 470 Testing Thermosetting Insulated and Jacketed Wire and Cable5 3.Compound 3.1 The tape shall consist of an unvulcan-ized or partially vulcanized rubber insulating compound.The compound shall contain no more than 0.5%of free sulfur by weight
7、 when tested as specified in Section 17.The compound shall be well,evenly and smoothly processed,cut to the specified widths and tightly wound in rolls with a separator be-tween layers.4.Separator 4.1 The separator shall be parchment pa-per,glazed or plastic sheeting,or any suitable material interpo
8、sed between adjacent layers.The removable or nonremovable separator shall not interfere with the use of the roll during application.Where a removable sepa-rator is used,the separator shall not show any undue tendency to stick to the rubber or to ravel.The outside end of the roll shall be securely fa
9、stened.5.Tensile Strength and Elongation 5.1 The tensile strength of the tape,when tested as specified in Section 18 shall be not less than 1.7 MPa(250 psi).5.2 The elongation of a 50-mm(2-in.)gage length determined simultaneously with the tensile strength test,shall be not less than 300%.6.Dielectr
10、ic Strength 6.1 The dielectric strength of the tape,when tested as specified in Section 19,shall be not less than 14 kV/mm(350 V/mil)of thickness.This specification is under the urisdictjon of the ASTM Committee D-9 on Electrical jnsulating Materials and is the direct responsibility of Subcommittee
11、D09.18 on Elastomeric Insulation on Cables.Current edition approved Nov.24,1978.Published January 1979.On naU published as D119-21 T.Last previous edition D C9-A.a Annual BooKofASTM StandardF,Part 39.Annual Book ofASTM Srondnrdi,Part 37.Annual Book ofASTM Standards,Parts 37and 38.Annual Book ofASTM
12、S-,Part 40.NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.9007276 4CIb 0039275 948 W D 119 7.Fusion specified in Section 20.8.Heat Resistance test as specified in Section 21.9.Dimensions
13、 9.1 The tape shall conform to the following nominal dimensions when tested as specified in Section 22:Width Thickness Length 20 0.75 0.80 0.030 9.1 10 25 1.00 0.80 0.030 9.1 10 40 1.50 0.80 0.030 9.1 10 50 2.00 0.80 0.030 9.1 10 7.1 The tape shall meet the fusion test as 8.1 The tape shall meet the
14、 heat resistance mm in.mm in.m Y d Millimetre and inch values,and metre and yard values are nominal and not equivalent.Other widths,thicknesses and lengths may be supplied as agreed between the purchaser and the supplier.10.Permissible Vanations in Dimension 10.1 The average thickness shall not vary
15、 from the nominal thickness more than 20.08 mm(+r0.003 in.)and the average width not more than 20.08 mm(20.003 in.)and the length of the rolls in any sampling shall be no less than the nominal length.No individual thickness shall vary from the nominal thick-ness more than 213%and no individual width
16、 shall vary more than k1.5 mm(+0.06 in.).U.S.customary units are referee.11.Sampling 11.1 Sample rolls shall be taken at random from each shipment as specified in the follow-ing table:Number of Rob in Shipment Number of Sample Rolls 50 to 200 2 201 to 500 3 501 to 1000 4 1001 to 5000 5 For shipments in excess of 5000 rolls,one additional roll shall be taken for each addi-tional 1000 rolls or fraction thereof.11.2 A shipment shall consist of material shipped or intended for shipment to a pur-chas
