1、Designation: D3555 07 (Reapproved 2013) An American National StandardStandard Specification forTrack-Resistant Black Crosslinked Polyethylene Insulationfor Wire and Cable, 90 C Operation1This standard is issued under the fixed designation D3555; the number immediately following the designation indic
2、ates 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 specification covers a track-resistant
3、 black cross-linked polyethylene insulation, the base polymer which con-sists substantially of polyethylene or its copolymers. Thisinsulation shall be carbon black pigmented.1.2 This type of insulation is considered suitable for use onwire or cable that will be used for continuous operation atconduc
4、tor temperatures up to 90 C.1.3 This insulation is suitable for use on wire or in cableused for power transmission in overhead spaced-line service,installed at temperatures above 25 and exposed to sunlightand other atmospheric environments between 55 and +90 C.1.4 In many instances, the insulation c
5、annot be tested unlessit has been formed around a conductor.Therefore, tests done oninsulated wire in this standard are solely to determine therelevant property of the insulation and not to test the conductoror completed cable.1.5 Whenever two sets of values are presented, in differentunits, the val
6、ues in the first set are the standard, while those inparentheses are for information only.2. Referenced Documents2.1 ASTM Standards:2D470 Test Methods for Crosslinked Insulations and Jacketsfor Wire and CableD1711 Terminology Relating to Electrical InsulationD2132 Test Method for Dust-and-Fog Tracki
7、ng and ErosionResistance of Electrical Insulating MaterialsD2765 Test Methods for Determination of Gel Content andSwell Ratio of Crosslinked Ethylene Plastics2.2 ICEA Standard:ICEA T-28-562 Test Method for Measurement of Hot Creepof Polymeric Insulations33. Terminology3.1 Definitions:3.1.1 For defin
8、itions of terms used in this specification, referto Terminology D1711.3.2 Definitions of Terms Specific to This Standard:3.2.1 aging, (act of), nexposure of materials to air at atemperature of 121 C for 168 h.4. Physical Properties4.1 When tested for physical and aging requirements, heatdistortion,
9、cold bend, U-bend discharge, surface resistivity, andtrack resistance in accordance with Test Methods D470, thetrack-resistant black crosslinked polyethylene insulation shallmeet the requirements specified in Table 1. The insulation is tomeet the requirements for percent hot creep and hot setspecifi
10、ed in Table 1. The test is to be performed in accordancewith ICEA T-28-562. Only in case of dispute, the solventextraction (gel content and swell ratio) test in Test MethodsD2765 is to be the referee method. The extractables, after adrying time of 20 h, shall be no more than 30 %.5. Electrical Requi
11、rements5.1 Subject cable specimens to a 5 min ac or dc voltagewithstand test at voltages which are based on the nominalthickness of the insulation. Conduct tests in accordance withMethods D470 using 125 V/mil (5 kV/mm) for ac tests or 375V/mil (15 kv/mm) for dc tests.6. Sampling6.1 Sample the insula
12、tion in accordance with Test MethodsD470, D2765, and ICEA T-28-562.7. Test Methods7.1 Test the insulation in accordance with Test MethodsD470, D2132, and D2765, modified as noted in Table 1, andICEA T-28-562.1This specification is under the jurisdiction of ASTM Committee D09 onElectrical and Electro
13、nic Insulating Materials and is the direct responsibility ofSubcommittee D09.18 on Solid Insulations, Non-Metallic Shieldings and Coveringsfor Electrical and Telecommunication Wires and Cables.Current edition approved March 1, 2013. Published March 2013. Originallyapproved in 1977. Last previous edi
14、tion approved in 2007 as D3555 07 DOI:10.1520/D3555-07R132For 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.3Ava
15、ilable from The Insulated Cable Engineers Association, Inc. (ICEA), P.O.Box 1568, Carrollton, GA 30112, http:/.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States18. Keywords8.1 ac test; cold bend; crosslinked polyethylene; dc test;elonga
16、tion; environmental cracking; heat distortion. surfaceresistivity; tensile strength; track-resistant; u-bend dischargeASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly
17、 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 be reviewed every five years andif not revised, ei
18、ther 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 theresponsible technical committee, which you may atten
19、d. 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, West Conshohocken, PA 19428-2959,United States. In
20、dividual 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 secure
21、d from the ASTM website (www.astm.org/COPYRIGHT/).TABLE 1 Physical Requirements for Track-Resistant Black Crosslinked Polyethylene InsulationPhysical requirements (unaged):Tensile strength, min, psi (MPa) 1800 (12.4)Elongation at rupture, min, % 250Physical requirements after aging in an air oven at
22、 1211Cfor168h:Tensile strength, min, % of unaged value 75Elongation at rupture, min, % of unaged value 75Heat distortion at 121 1 C, max, % of unaged thickness:4/0 AWG (107 mm2) and smaller (insulation on cable) 30Larger than 4/0 AWG (107 mm2) (buffed sample of insulation) 15Percent Hot CreepFilled 100Unfilled 175Percent Hot SetFilled 5Unfilled 10Cold bend, 251Cfor1h no cracksU-bend discharge, 125 V/mil (5 kV/mm) no cable failures or cracks in insulationsurfaceSurface resistivity, min, M 200 000Track resistance:Average time to failure, min (h) 200 (3.33)D3555 07 (2013)2
