1、Designation: D3555 07 (Reapproved 2013)Standard 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 indicates the year oforiginal adopt
2、ion 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 black cross-linked polyethyle
3、ne 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 atconductor temperatures up to 90 C.1.
4、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 cannot be tested unlessit has b
5、een 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 values in the first set are the s
6、tandard, 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 Tracking and ErosionResistance of El
7、ectrical 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 definitions of terms used in this s
8、pecification, 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, cold bend, U-bend discharge, s
9、urface 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 setspecified in Table 1. The test is to
10、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 Requirements5.1 Subject cable speci
11、mens 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 insulation in accordance with Test M
12、ethodsD470, 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 Electronic Insulating Materials and i
13、s the direct responsibility ofSubcommittee D09.07 on Electrical Insulating Materials.Current edition approved March 1, 2013. Published March 2013. Originallyapproved in 1977. Last previous edition approved in 2007 as D3555 07. DOI:10.1520/D3555-07R132For referenced ASTM standards, visit the ASTM web
14、site, 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 The Insulated Cable Engineers Association, Inc. (ICEA), P.O.Box 1568, Carrollton, GA 30112, htt
15、p:/.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;elongation; environmental cracking; heat distortion. surfaceresistivity; tensile strength; track-resistant; u-ben
16、d 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 advised that determination of the validity of any such patent rights, and the riskof infringement of such
17、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, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additio
18、nal standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible 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 A
19、STM 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. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the ab
20、oveaddress 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:/ 1
21、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 1211Cfor168h:Tensile strength, min, % of unaged value 75E
22、longation 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
