ImageVerifierCode 换一换
格式:PDF , 页数:8 ,大小:205.22KB ,
资源ID:174733      下载积分:12 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。 如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【https://www.wnwk.com/docdown/174733.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: QQ登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(ASTM_D_6097_-_01a_2008e1.pdf)为本站会员(益****师)主动上传,蜗牛文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知蜗牛文库(发送邮件至admin@wnwk.com或直接QQ联系客服),我们立即给予删除!

ASTM_D_6097_-_01a_2008e1.pdf

1、Designation:D609701a(Reapproved 2008)1Standard Test Method forRelative Resistance to Vented Water-Tree Growth in SolidDielectric Insulating Materials1This standard is issued under the fixed designation D6097;the number immediately following the designation indicates the year oforiginal adoption or,i

2、n 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.1NOTEThe units statement in subsection 1.2 was corrected and the warning in old Note 2 was moved in

3、to the text of8.2 editorially in July 2008.1.Scope1.1 This test method covers the relative resistance to ventedwater-tree growth in solid translucent thermoplastic or cross-linked electrical insulating materials.This test method isespecially applicable to extruded polymeric insulation materi-als use

4、d in medium-voltage cables.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 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 sta

5、ndard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitation prior to use.For specific hazardstatements see 8.1.1.4 There is no similar or equivalent IEC standard.2.Referenced Documents2.1 ASTM Standards:2D1898 Practice for Sampling of Plastic

6、s(Withdrawn 1998)3D1928 Practice for Preparation of Compression-MoldedPolyethylene Test Sheets and Test Specimens(Withdrawn2001)3D2275 Test Method for Voltage Endurance of Solid Electri-cal Insulating Materials Subjected to Partial Discharges(Corona)on the SurfaceD3756 Test Method for Evaluation of

7、Resistance to Electri-cal Breakdown by Treeing in Solid Dielectric MaterialsUsing Diverging Fields3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 water tree length(WTL),nthe maximum length of astained tree-like micro-channel path in millimetres,measuredfrom the tip of the conic

8、al defect in the direction of the conicalaxis.3.1.2 resistance to water-tree growth(RWTG)a dimen-sionless value which is L divided by the WTL.3.1.3 thickness of point-to-plane specimen(L),nthe ver-tical distance in millimetres from the tip of the conical defectto the opposite surface of the solid di

9、electric material.4.Summary of Test Method4.1 Ten compression-molded disk specimens,each contain-ing a conical-shaped defect,are subjected to an applied voltageof 5 kV at 1 kHz and 23 6 2C in an aqueous conductivesolution of 1.0 N NaCl for 30 days.This controlled conicaldefect is created by a sharp

10、needle with an included angle of60 and a tip radius of 3 m.The electrical stress at the defecttip is enhanced and can be estimated by the Masons Hyper-bolic point-to-plane stress enhancement equation.4This en-hanced electrical stress initiates the formation of a ventedwater-tree grown from the defec

11、t tip.Each treed specimen isstained and sliced.The water-tree length and point-to-planespecimen thickness measured under microscope are used tocalculate a ratio that is defined as the resistance to water-treegrowth.5.Significance and Use5.1 This is a laboratory test designed to simulate the growthof

12、 vented water-trees in the solid dielectric insulating material1This test method is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and is the direct responsibility ofSubcommittee D09.12 on Electrical Tests.Current edition approved May 1,2008.Published J

13、uly 2008.Originally approvedin 1997.Last previous edition approved in 2001 as D6097 01a.DOI:10.1520/D6097-01AR08E01.2For 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 s

14、tandards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4The sole source of supply of the base,Dow Corning 3110RTV,the catalyst,Dow Corning RTV Catalyst S,and the sealant,Dow Corning Multipurpose SiliconeSealant 732,known

15、to the committee at this time is Dow Corning,Inc.,Midland,MI48686.If you are aware of alternative suppliers,please provide this information toASTM International Headquarters.Your comments will receive careful consider-ation at a meeting of the responsible technical committe,which you may attend.Copy

16、right ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 initiated by a sharp protrusion at the insulating and conductiveinterface under a wet environment in a high electrical field.Water-treeing is the phenomenon which describes the appear-ance of tree-like growth in organic dielectrics under an ac fieldwhen exposed to moist environments.Two types of water-treesare formed.Bow tie trees(within the dielectric)and ventedwater-trees formed from condu

copyright@ 2008-2023 wnwk.com网站版权所有

经营许可证编号:浙ICP备2024059924号-2