欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    UL 486C CRD-2016 UL Standard for Safety Splicing Wire Connectors - Section Paragraph Reference 1 5 10 4 10 5 Table 2 Table 22 Subject Increase Voltage Ratings to 2000 Volts (Editi.pdf

    • 资源ID:1068197       资源大小:17.77KB        全文页数:4页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!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)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    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,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、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。

    UL 486C CRD-2016 UL Standard for Safety Splicing Wire Connectors - Section Paragraph Reference 1 5 10 4 10 5 Table 2 Table 22 Subject Increase Voltage Ratings to 2000 Volts (Editi.pdf

    1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared by UL LLC. It is normative for the applicable ULProduct Certification Program(

    2、s); however, it is currently not part of the UL Standard(s) referencedbelow.Product Category (CCN): ZMVV/ZMVV2Standard Number: UL 486CStandard Title: Standard for Splicing Wire ConnectorsEdition Date: January 11, 2013Edition Number: 6Section / Paragraph Reference: 1.5, 10.4, 10.5, Table 2, Table 22S

    3、ubject: Increase Voltage Ratings to 2000 VoltsDECISION:1.5 This Standard does not apply to:a) insulated splicing wire connectors intended for use at voltage levels in excess of 2000 600 V1000 V in a sign or luminaire;b) terminal wire connectors;c) wire binding screw terminals;d) built-in terminal co

    4、nnectors on devices rated less than 30 A and intended for outlet boxmounting or having provision for stress relief;e) built-in terminal connectors on devices having integral cable clamps;f) flat quick connect terminals; andg) soldering lugs.10.4 A connector that accommodates a single conductor in an

    5、 opening shall be marked with the followingor equivalent wording, as applicable:a) “CU” for copper conductor only;b) “AL” for aluminum conductor only;c) “AL-CU” or “CU-AL” for aluminum, copper-clad aluminum, and copper conductor;d) for an insulated connector, the marked voltage rating shall be: “300

    6、 volts maximum”, “600volts maximum”, 1000 volts maximum, 1500 volts maximum, 2000 volts maximum, or “600volts maximum, building wiring; 1000 volts maximum, signs or luminaires”. The marking may beon the unit container or on an information sheet packed in the unit container; ande) the operating tempe

    7、rature rating for which the insulated connector has been found capable ofbeing used. See also 10.14 d).UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL10.5 The unit container or an information sheet packed in the unit container of a connector

    8、thataccommodates two or more conductors in the same opening shall be marked with the following orequivalent wording, as applicable:a) “CU” for copper conductor onlyb) “AL” for aluminum conductor only;c) “AL-CU” or “CU-AL” for copper to copper, or copper-clad aluminum to copper-clad aluminum,or alumi

    9、num to aluminum conductor, but not intermixed;d) “AL-CU (intermixed dry locations)” or “CU-AL (intermixed dry locations)” for copper toaluminum conductor; for copper-clad aluminum to copper; and for copper-clad aluminum toaluminum;e) for an insulated connector, the marked voltage rating shall be: “3

    10、00 volts maximum”, “600volts maximum”, 1000 volts maximum, 1500 volts maximum, 2000 volts maximum, or “600volts maximum, building wiring; 1000 volts maximum, signs or luminaires”. The marking may beon the unit container or on an information sheet packed in the unit container;f) with the operating te

    11、mperature rating for which the insulated connector has been foundcapable of being used. See also 10.14 d); andg) with the complete or a partial list of intended conductor combinations.Table 2 - Insulation puncture and flashover test voltages, Tests A and B(Clauses 6.3.6, 9.5.2.4, 9.5.3.1, and 9.5.3.

    12、2)Connector insulation voltage rating, VTest voltage, VacPuncture ( 1 min) Flashover (Maximum)300 2 200 4 000600 (1 000 in signs and luminaires) 3 400 8 0001000 5 000 11 0001500 7 000 16 0002000 9 000 21 000STANDARD NUMBER: UL 486C -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION O

    13、RDISTRIBUTION WITHOUT PERMISSION FROM ULTable 22 - Flashover test voltage, Test C(Clause 9.5.4.1)Connector insulation voltage rating, V Flashover test voltage, Vac300 1 600600 (1 000 in signs and luminaires) 3 0001000 4 4001500 6 4002000 8 400RATIONALE FOR DECISION:Voltage applications greater than

    14、600 volts are becoming more commonplace, and accepted as lowvoltage wiring in the National Electrical Code. The NEC was revised in 2014 to raise the long-acceptedthreshold of 600 V to 1000 V. While there have been proposals to raise this level to 2000 volts, theseproposals were not accepted as an ac

    15、ross-the-board practice, with voltage limits of 1500 V morecommon in alternative energy applications. While this upper limit for low voltage wiring is evolving, theimpact to connectors is less dynamic, as the connector is not impacted by concerns such as switching.Since the NEC establishes that cond

    16、uctors operating above 2000 volts as the break-point at whichshielded cable is generally required (See NEC 310.10(E), this Certification Requirement Decision (CRD)establishes 2000 volts as the new limit for insulated splicing wire connectors. The 1000 volt rating for signsand luminaires remains with

    17、 the specific marking for those applications, however it is no longer necessaryto identify that rating in clause 1.5 as that value would fall within the range of the new ratings. This CRDalso aligns with a CRD that accomplishes the same addition in UL 486A-486B.This CRD provides rating break points

    18、at 1000 Volts (present NEC level for low voltage), 1500 Volts(more common break point for alternative energy applications), and 2000 volts (upper limit established asnoted in the preceding paragraph). The test values for Puncture/Flashover in Table 2 are based on thefollowing:Puncture 4X Rated + 100

    19、0Flashover 10X Rated +1000The test values in Table 29 are based on a calculation of 40% of the Flashover test voltage from Table28. While this aligns with the existing 300 V value, it is different than what is used for the 600 V value(which is 37.5% of the Flashover Test Voltage from Table 28). Howe

    20、ver, use of the 40% value is the moreconservative approach to an extension of the test values in Table 28 to the test values in Table 22.Copyright 2016 UL LLCUL LLC, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Requireme

    21、nt Decisions it may issue or that they will be recognized or adoptedby anyone. Certification Requirement Decisions are the opinion of UL LLC. in practically applying therequirements of the standard. They do not represent formal interpretations of the standard underAmerican National Standards Institu

    22、te (ANSI) processes. UL LLC shall not be responsible to anyone forthe use of or reliance upon Certification Requirement Decisions by anyone. UL LLC shall not incur anyobligation or liability for damages, including consequential damages, arising out of or in connection withthe use or reliance upon Ce

    23、rtification Requirement Decisions. The electronic version of the CertificationRequirement Decision is the current version and previously printed copies may be outdated.STANDARD NUMBER: UL 486C -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis document is published as a service to ULs certification customersSTANDARD NUMBER: UL 486C -4-


    注意事项

    本文(UL 486C CRD-2016 UL Standard for Safety Splicing Wire Connectors - Section Paragraph Reference 1 5 10 4 10 5 Table 2 Table 22 Subject Increase Voltage Ratings to 2000 Volts (Editi.pdf)为本站会员(postpastor181)主动上传,麦多课文档分享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,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开