UL 58 STANDARD FOR SAFETY Steel Underground Tanks for Flammable and Combustible Liquids UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 31 ,2018-UL 58 UL Standard for Safety for Steel Underground Tanks for Flammable and Combustible Liquids ,UL 58 Tenth Edition ,Dated January 31 ,2018 Summary of Topics This New Edition of UL 58 is being issued to address the editorial maintenance of UL Standards for Safety All rights reserved .No part of this publication may be reproduced ,stored in a retrieval system ,or transmitted in any form by any means ,electronic ,mechanical photocopying ,recording ,or otherwise without prior permission UL . UL provides this Standard " as"without warranty of any kind ,either expressed or implied ,including but not limited to ,the implied warranties of merchantability or fitness for any purpose In no event will UL be liable for any special ,incidental ,consequential ,indirect or similar damages including loss of profits ,lost savings ,loss of data ,or any other damages...

UL555 isbn0-7629-1165-4 Fire Dampers COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL reproduction networking permitted from IHS UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL reproduction or networking permitted from IHS july12,2006-u555 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Fire Dampers ,UL 555 Seventh Edition ,Dated July 12 ,2006 Summary of Topics The Seventh Edition of the Standard for Fire Dampers ,UL 555 has been issued to reflect the latest ANSI approval date and to incorporate the proposals dated February 17 ,2006 and June 2 , 2006 .These proposals included the following : The revision of allowable clearance between parts during and after a fire test . The revision to delete the " Ambient'rating from 14.1.3. The deletion of paragraph 1 .13 which addresses issues specific to the certification of a product . Revisions to update references throughout the standard . Editorial revisions throughout standard . The revised requirements are substantially in accordance with UL's Propo...

目录 介绍 1范围 2概述 2.1零组件 2.2测量单位 2.3未注明日期之参考文献6 3专用词汇. 产品结构 4概述...7 5温感器控制 6套筒，8 7耐腐蚀性12 8执行器.13 产品性能 9概述..13 10耐火性和消防射流试验15 10.1验收条件15 10.2测试组件16 10.3消防试验的控制和实施.17 11循环实验.20 12盐雾曝露试验.20 13弹簧闭合力试验.21 14动态闭合试验。

.21 14.1概述....21 14.2试验方法..22 15管道冲击试验。

24 16气动执行器的流体静力强度试验.26 产品标示 17概述.27 安装操作说明 18概述.28 附录A 部件标准。

.A1 附录B
控制火灾试验的标准时间-温度曲线....- . . .B1 介绍
1范围 1.1本标准适应于预计安装在这些地方的防火阀，如穿墙或理入墙体、隔板开口处的管道、隔墙的空气输 送开口处以及美国国家防火协会（NFPA）在《空调和通风系统安装标准90A》中提到的延伸穿过地板的管 道。

防火阀必须按照规范安装，如官方建筑师与规范管理人员协会（BuildingOfficials andCode Administrators BOCA）国家机械器具条款、南方建筑物规范国际协商会（Southern Building Code Conference International SBCCI）标准机械条款、商业机会互通理事会（Interracial Council for BusinessOpportunities ICBO）统一机械 条款以及国际机械器具条款等装设标准来使用。

1.2防火阀还可以用于以下情况： a）静态系统的防火阀一一用于在发生火灾或墙壁、隔墙中的空气转换开口时自动关闭的暖通空调系 统，（Heating,Ventilating and AirConditioning采暖通风与空调） b）动态系统的防火阀一一用于在火灾中运行时的暖通空调系统或者 c）排烟防火阀一一用于暖通空调系统中需要防火阀和排烟阀在同一位置共同起作用的地方。

1.3为满足上述要求，防火阀需要经受标准的火场曝露测试，受控以在规定的时间段内达到指 定的温度，然后接受标准的消防射流测试，这种火场噪露本身并不代表的火灾条件：条件随火灾负荷的数 量、性质和分布、通风设备、舱室尺寸和结构，隔室散热器性质的变化而变化。

这些要求提供了在这些特定的 火灾暴露条件下防火阀组件的防火性能的相对测量。

与施工、测试方面如安装方法和材料的任何变化都有可能 极大地改变防火阀组件的性能特性。

1.4用于静态系统的防火阀（没有气流通过阀体）在温感器检测热时自动关闭。

1.5在这些需求下，用于动态系统下的排烟防火阀和防火阀暴露于标准的热和气流条件下，并在这些条件 下动态关闭。

1.6排烟防火阀也应符合UL555S排烟阀标准的使用要求。

1.7用于动态系统的防火阀旨在用于在火灾时保证气流流通，例如在火灾时烟气控制系统或其他系统中风 机系统正常运行。

1.8当防火阀用于穿越防火屏障的管道中或烟雾控制系统部分管道中时，系统设计者应确定哪种类型的防 火阀适合于此类应用中。

用于动态系统的防火阀仅在热气流条件下动态关闭。

具有高温额定值的排烟防火 阀在热气流下动态关闭并能在热空气中正常运行。

1.9根据这些要求进行的试验旨在证明防火阀在火场曝露试验期间的性能，而不打算确定防火阀在火灾后 的可使用性。

1.10根据本文描述的测试方法进行的测试开发数据的目的就是使监管部门能够确定防火阀组件是否适用 于在规定持续时间内防火的场所。

1.11防火阀的作用是当检测到热量时通过使用熔断器或其它温感器自动关闭。

1.12这些要求不包括在内： a)安装在墙壁、隔板或者不是由试验材料制成地板上的防火阀组件的性能。

b)用试验方法以外的安装方法安装的防火阀的性能。

c）通过安装的防火阀热传递的测量。

d）防火阀控制或限制烟气或燃烧产物通过程度的测量。

2概述 2.1零组件 2.11除以下2.1.2所注明之事项，本标准所包含之产品零组件必须符合零组件需求标准，请参阅附录A中所示 列出标准中涵盖的产品所使用的组件的标准清单。

2.12以下情形中零组件不必符合特定之标准： a）牵涉到产品使用时，出现标准内未规范之特性， b）或出现本标准之更新条款时。

2.13零组件务必依据本身用途及条件所订立的温度定额来使用。

2.14某些特定零组件被认定为产品结构特质不完整，或有其功能上之限制。

这类产品零组件仅适用于限定之环 境内，诸如温度定额不能超出特定限度，且仅能在受认可之使用环境内操作。

2.2测量单位 2.2.1在一数值之后的括号内，有其它单位计量值时，前者为标准内所用之数值。

2.3未注明日期之参考文献 2.3.1针对本标准需求内规范及条款的任何参考文献，必须是针对最新之条款或标准作解说。

3名词解释 3.1本标准可利用下列词汇定义： 3.2动力封闭-在热气流环境下，温感器启动而使防火挡板封闭。

3.3温感器-一种响应温度变化的安全装置，以激活防火阀的关闭机构。

3.4热风运行-阀体受气流及热的影响时，经由执行器操作排烟阀之操作方式。

3.5初级温感器-配备两个温感器的防火阀中较低温度额定值的温感器。

3.6防火阀的重新打开-配备初级和次级温感器的防火阀。

防火阀在初级温感器启动后可操作，而在次级设备激 活之后不能进行操作。

3.7次级温感器-配备两个温感器的防火阀中较高温度额定值的温感器。

3.8体积防火阀-使用位置装置的防火阀，使防火阀保持在完全打开或完全关闭的位置。

产品构成 4概述 4.1防火阀应安装成在关闭位置时限制火焰的通过。

动态系统的排烟防火阀和防火阀用应安装 成在额定气流和热条件下关闭。

排烟防火阀的温感器的额定温度应小于等于排烟阀。

4.2通过防火阀操作间隙的开口，在垂直平面（如防火阀叶片和框架的每一侧之间）的任何位置不超过3/8英寸 （9.5毫米），在水平平面任何位置不超过1/32英寸（0.8毫米）（如在联锁帘中叶片到叶片较接处）。

4.3任何通过防火阀和其管道之间的开口都不足以使在开口的整个深度上通过1/8英寸（3.5毫米）直径的杆。

任何 通过在多个防火阀总成上的开口，在两个框架的角相接的地方都不够大，从而使直径为1/4英寸（6.4毫米）直径的
杆穿过开口的整个深度。

4.4为了满足4.2和4.3的要求，当在垂直于安装平面的平面上观看时，通过防火阀上的开口是一个可见的开口。

4.5非金属或有机部件，如垫圈、密封剂、限位开关或叶片指示位置器用于建造防火阀和暴露于空气流的指标 应符合耐火性和消防射流试验的要求，第10条。

4.6由于采用了二级温感器可以在最初的关闭之后重新打开的排烟防火阀不被这些要求所禁止，次级温感器响 应导致阀体关闭后不会重新打开。

5温感器 5.1用于动态系统和静态系统的防火阀都应配备一个温感器。

排烟防火阀应配备一个温感器或者一套二级 温感器。

5.2用于静态系统的防火阀的温感器的温度额定值最小为160°F（71°C），且不超过212°F（100°C）。

5.2.1用于动态系统的防火阀的温感器的温度额定值最小为160°F（71°C），且不超过350°F（177C）。

5.2.2不能重新打开的排烟防火阀的温感器的温度额定值最小为160”F（71°C），其小于或等于由UL555S排 烟阀标准确定的阀体的温度额定值，且不超过350”F。

5.2.3对于可重新打开的排烟防火阀，初级温感器的温度额定值最小为160°F（71°C），且不超过212°F（100° C）。

次级温感器的温度额定值应大于初级温感器的温度等级，不低于由排烟阀UL55S标准确定的阀体的温度 额定值，且不应超过350°F（177C）。

5.3防火阀温感器的负载应在设备的设计负载极限内。

6套筒 6.1对于利用周边安装角安装的防火阀，应提供一个套筒，除非防火阀有足够大的框架，以提供对周边安装角 的直接连接。

防火阀的厚度，当不提供套筒时，应符合套筒的要求。

详情请参阅6.5。

6.2与防火阀一起使用的套简应在安装和操作说明中规定在现场供应时使用。

参见第18节。

6.3套筒或框架与管道连接应根据金属板材和空调承包商国家协会（SMACNA）管道施工标准。

暖通空调管道建 设标准；或纤维玻璃管施工标准。

6.4在套筒或框架和管道之间的刚性和断裂连接处的套筒或框架延伸到墙外或地板开口的长度不应超过： a）每边6英寸（152毫米），用于无执行机构或工厂安装检修门的防火阀。

b）一侧6英寸（152毫米），另一侧16英寸（406毫米），用于执行机构和/或工厂安装检修门在较长一 侧的防火阀。

c）每边16英寸（406毫米），用于执行器在一侧、工厂安装检修门在另一侧的防火阀。

6.5用于套管与导管之间的刚性连接 a）套筒的最大厚度应为无涂层钢板：0.135（3.43mm）和涂层钢板：0.138（3.51mm），除非测 试较大的套筒厚度。

b）套管厚度应至少为无涂层钢板0.053英寸（1.35毫米）、涂层钢板0.056英寸（1.42毫米）的防火阀钢板 的尺寸高度不超过24(610毫米）或宽度不超过36英寸（914毫米)，且无涂层钢板厚度最小0.067英 寸（1.70毫米）和涂层钢板厚度最小0.070英寸（1.78毫米），涂层钢板用于大尺寸防火阀。

例外：使用的套管厚度不得小于NFPA90A《空调和通风系统安装标准90A》标准所要求的厚度。

下列情况下较
小厚度的套管是不被禁止使用的： a）图6.1一6.3所示类型的一个或多个分离接头用作套管和管道之间的连接，或 b）分离接头符合管道冲击试验，第15节。

图6.1 管道套筒连接
PLAIN“S” SLIP HEMMED“S”SLIP
(ALTERNATE BAR)(ANGLEREINFORCED)(BAR REINFORCED)
INSIDE SLIP JOINT DOUBLE “S” SLIP
SM230A
M2.5...

ay11,2007 SUBJECT 50V OUTLINE OF INVESTIGATION FOR INFRARED VIEWPORTS ISSUE NUMBER :1 may11,2007 Summary of Topics This is the First issue of the Outline of Investigation for Infrared Viewports ,Subject .Infrared ( )viewports are intended for factory installation in doors or walls of electrical enclosures for installation in ordinary ( non-hazardous)locations to allow the use of IR scanners for monitoring temperatures of the enclosed equipment on which the viewport is installed ,without promising the integrity of the enclosure with respect to access to live parts . The Foreword is no longer located within the UL Standard .For information concerning the use and application of the requirements contained in this Standard ,the current version of the UL Foreword is located on ULStandardslnfoNet at :http ://ulstandardsinfonet.ul . /ulforeword.html spmtwswmolelbrihiSmt COPYRIGHT 2007 UNDERWRITERS LABORATORIES INC 20398862007804pm 2 20 COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SUBJECT 50V may11,2007 No Text on This Page 20398860077804p LCOPYRIGHTED MATERIA NOT AUTHORIZED FOR FURTHER REPRODUCTION OR D...

UL 50E Enclosures for Electrical Equipment ,Environmental Considerations This PDF Standard downloaded from . . SEPTEMBER 4 .2007 - UL50E Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook .IL 60062-2096 UL Standard for Safety for Enclosures for Electrical Equipment ,Environmental Considerations ,UL 50E First Edition ,Dated September 4 ,2007 Summary of Topics This first edition of ANSI /UL50E is the result of the harmonization effort develop a tri-national standard covering requirements for enclosures for electrical equipment .The first edition of UL 50E contains the additional construction ,performance ,and marking requirements related the environmental type rating designations .The non-environmental construction ,performance , and marking requirements for enclosures are included in the twelfth edition of UL 50 . The new requirements are substantially in accordance with UL's Proposal ()onthis subject dated March 11,2005and August 25,2006. As indicated on the title page ( page1 ),this UL Standard for Safety is an American National Standard . Attention is directed to the note on the title page of this Standard outlining the procedures to be f...

UL UL508 ⑧ Underwriters Laboratories Inc . Standard for Safety Industrial Control Equipment SEPTEMBER 19 .2008 -UL 508 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Industrial Control Equipment ,UL 508 Seventeenth Edition ,Dated January 28 ,1999 Revisions :This Standard contains revisions through and including September 19 ,2008 Summary of Topics Revisions are being issued to modify the scope to reference UL 1008 for assemblies constructed of two or more controllers intended to transfer power to a mon output between multiple input sources . UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language ( SGML).SGML - an international standard ( ISO8879-1986 )--is a descriptive markup language that describes a document's structure and purpose ,rather than its physical appearance on a page .Due to formatting differences resulting from the use of UL's new electronic publishing system ,please note that additional pages ( onwhich no requirements have been changed )may be included in revision pages due to relocation of existing text and reformatting of the Standard Text th...

UL 50 Enclosures for Electrical Equipment ,Non-Environmental Considerations UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This PDF Standard downloaded from . . SEPTEMBER 4 .2007 - UL50 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook .IL 60062-2096 UL Standard for Safety for Enclosures for Electrical Equipment ,Non-Environmental Considerations ,UL 50 Twelfth Edition ,Dated September 4 ,2007 Summary of Topics This new twelfth edition of ANSI /ULis the result of the harmonization effort to develop a tri-national standard covering requirements for enclosures for electrical equipment .The twelfth edition of UL 50 contains the non-environmental construction ,performance ,and marking requirements for enclosures .The requirements for enclosure construction ,performance ,and markings based on environmental type rating designations have been organized into new standard ,UL 50E ,Standard for Enclosures for Electrical Equipment ,Environmental Considerations . The new requireme...

UL UL 5 ⑧ Underwriters Laboratories Inc . Standard for Safety Surface Metal Raceways and Fittings This PDF Standard downloaded from . . JuLY29,2009 UL 5 UL Standard for Safety for Surface Metal Raceways and Fittings ,UL 5 Thirteenth Edition ,Dated February 26 ,2004 Summary of Topics The following revision is being issued for UL 5 : Correction to Table 15 .1 ,Maximum resistance of individual sections and fittings Text that has been changed in any manner or impacted by UL's electronic publishing system is marked with a vertical line in the margin .Changes requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement bees effective The revised requirements are substantially in accordance with Proposal ()onthis subject dated May 22 2009 All rights reserved .No part of this publication may be reproduced ,stored in a retrieval system ,or transmitted in any form by any means ,electronic ,mechanical photocopying ,recording ,or otherwise without prior permission of UL . UL provides this Standard " is "without warranty of any kind ,either expr...

UL UL498 ⑧ Underwriters Laboratories Inc . Standard for Safety Attachment Plugs and Receptacles 标准分享网. .免费下载 july1,2009-ul498 Underwriters Laboratories Inc .( ) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Attachment Plugs and Receptacles ,UL 498 Fourteenth Edition .Dated December 26 .2001 Revisions :This Standard contains revisions through and including July 1 ,2009 . SUMMARY OF TOPICS This revision to ANSI /ULincorporates the following : Addition of Requirements to Address an Attachment Plug that Incorporates a Locking Mechanism when Inserted into NEMA Straight Blade Receptacle . Addition of Requirements to Address Separable Terminal Assemblies Revision of Tamper-Resistant Receptacle Definition to Allow its Use in Any Location Specified by the NEC Text that has been changed in any manner is marked with a vertical line in the margin .Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement bees effective . The new and revised requirements are substantially in accordance with UL's Proposal ()on...

UL 497A ISBN -7629-0626-X Secondary Protectors for Communications Circuits MARCH 20 .2001 -UL 497A Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook .IL 60062-2096 UL Standard for Safety for Secondary Protectors for Communications Circuits ,UL 497A Third Edition ,Dated March 20 ,2001 UL is in the process of converting its Standards for Safety to the Standard Generalized Markup Language ( SGML),and implementing an SGML pliant document management and publishing system .SGML an international standard ( ISO8879-1986 )-is a descriptive markup language that describes a document's structure and purpose ,rather than its physical appearance on a page .Significant benefits that will result from UL's use of SGML and these new systems include increased productivity ,reduced turnaround times , and data and information consistency ,reusability ,shareability ,and portability .However ,the fonts , pagination ,and general formatting of UL's new electronic publishing system differ from that of UL's previous publishing system .Consequently ,when revision pages are issued for Standard with the new publishing system ,these differences may result in the printing of page...

UL448 Centrifugal Stationary Pumps for Fire-Protection Service UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL june8,2007-ul448 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook .60062-2096 UL Standard for Safety for Centrifugal Stationary Pumps for Fire-Protection Service ,UL 448 Tenth Edition ,Dated June 8 .2007 SUMMARY OF TOPICS This New Edition of ANSI /UL448 includes the following changes : Change scope section to reference centrifugal pumps for fire protection service Clarification of which devices are required to be supplied with each pump . Revise 7.2 to indicate that provisions for feet or a fabricated support ( base)are to be provided by the pump manufacturer . Clarification of criteria related to the construction of the discharge head for a vertical turbine pump . Clarification of which metals are accepted as being corrosion resistant without further testing . Clarification that the term maximum working pressure denotes the maximum pressure developed at the discharge flange...

UL 4 isbn0-7629-0942-0 Armored Cable By Ric . of Safety Standards D 080003804aM 20 20 03 JL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL was By ric ( AM 09020073a 90 039 COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This PDF Standard downloaded from . . JANUARY 16 .2004-UL 4 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Armored Cable ,UL 4 Fifteenth Edition ,Dated January 16 ,2004 Summary of Topics The 15th edition is being issued to add provision for color coating the armor and to editorially clarify and technically update the text of the UL 4 Standard . UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language ( SGML).SGML an international standard ( ISO8879-1986 )--is a descriptive markup language that describes a document's structure and purpose ,rather than its physical appearance on a page .Due to formatting differences resulting from the use of UL's new electronic publishing system ,please note that additional pages ( onwhich n...

MARCH 30 .2016 UL2900-2-2 Outline Investigation for Software Cybersecurity for Network - Connectable Products ,Part 2-2 :Particular Requirements for Industrial Control Systems Issue Number :1 March 30 .2016 Summary of Topics The outline aims to provide the minimum set of requirements by which the security-related features industrial control system ponents are evaluated at the product level and tested for known vulnerabilities while also establishing a minimum set of verification activities intended to reduce the likelihood of zero-day vulnerabilities that may affect the ponent . UL's Outlines of Investigation are copyrighted by UL .Neither a printed nor electronic copy of an Outline of Investigation should be altered in any way .All of UL's Outlines of Investigation and all copyrights ,ownerships ,and rights regarding those Outlines of Investigation shall remain the sole and exclusive property UL . COPYRIGHT 2016 UNDERWRITERS LABORATORIES INC . UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL2900-2-2 MARCH 30 .2016 No Text on This Page COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ...

详细解读平衡车UL2272认证的标准介绍 零部件要求 平衡车整车外壳(UL746C、UL746B)、充电器(二类电源UL1310、 非二类电源UL1012、UL60950-1)、马达(高于60V直流电压满足UL1004-1 低于60V直流电压可满足UL1004-1或本标准要求)、路及端子(UL2251等) 保护电路(UL991、UL1998等)、电池组(UL2271)都应该满足UL2272中对 配件提出的具体标准要求。 UL2272认证电性能测试 1、过充(电路板单一故障) 2、短路(电路板单一故障) 3、过放(电路板单一故障); 4、温度测试(温度满足表26.1、26.2部件及可接触表面温度要求); 5、不均衡充电(一个电芯完全放电、其他电芯放电至容量的50%,用规 定的充电器充电) 6、耐压测试(电压大于60V才需要进行本测试); 7、绝缘电阻测试(电压大于60V才需要进行本测试); UL2272认证机械性能测试 1、振动测试充满电后的平衡车按下表进行振动测试 当振动一个样品,每个方向振动21h,当同时振动测试两个样品,每个 方向振动15h,当同时振动三个样品,每个方向振动12h 测试后,如果平衡车仍可运行,应至少经受一次充放电循环。振动后平 衡车无起火、爆炸、外壳破裂、触电危险。 2、冲击测试 充满电的平衡车按下表进行平衡车冲击测试,在六个方向进行,每个方向 冲击三次。 测试后,如果平衡车仍可运行,应至少经受一次充放电循环。冲击后平衡 车无起火、无爆炸、无外壳破裂、无触电危险。 3、挤压测试 本测试主要考察平衡车整机在经受外部挤压后的安全性 完全充满电的平衡车经受下图规格的挤压板的挤压,直至变形量达到 50%,或挤压力达到平衡车质量的1000倍,或挤压力达到100KN(最先大 为准)。挤压力方向垂直于平衡车运动方向。样品只接受一次挤压。挤压后平衡 车不起火、不爆炸、无触电危险。 4、跌落测试 完全充满电的平衡车经受三次从高度为1米处的跌落跌落后如果平衡 车仍可操作,应进行至少一次充放电循环测试。平衡车应不起火、不爆炸、外壳 不破裂、无电解液泄漏。 5、外壳烤箱测试 试验前平衡车完全放电,该测试主要测试平衡车整机外壳在高温环境下 热塑性外壳是否产生收缩及变形。平衡车在70℃温度下放置7h。将平衡车从 高温箱移出,平衡车温度降低到室温。不应产生外壳破裂后带电零部件被测试 杆(2.5mm直径100mm长)触及 6、电机过载 启动平衡车,首先施加正常载重,随后逐渐增大平衡车载重,直至产生过 载保护或马达线圈断路。平衡车马达线圈温度计满足以下要求。 Thermal class Class Class B Class F Class H Temperature limit ℃ 140 165 190 215 7、电机堵转 起动平衡车马达让轮子自锁7h或达...

UL224 STANDARD FOR SAFETY Extruded Insulating Tubing may,2021-ul224 UL Standard for Safety for Extruded Insulating Tubing ,UL 224 Seventh Edition ,Dated May 5 ,2021 Summary of Topics This New Seventh Edition of ANSI /UL224 includes updates to referenced publications . The requirements are substantially in accordance with Proposal (s)onthis subject dated September 20 2020 and October 16 .2020 . All rights reserved .No part of this publication may be reproduced ,stored in a retrieval system ,or transmitted in any form by any means ,electronic ,mechanical photocopying ,recording ,or otherwise without prior permission of UL . UL provides this Standard " as"without warranty of any kind ,either expressed or implied ,including but not limited to ,the implied warranties merchantability or fitness for any purpose . In no event will UL be liable for any special ,incidental ,consequential ,indirect or similar damages , including loss of profits ,lost savings ,loss of data ,or any other damages arising out of the use of or the inability to use this Standard ,even if UL or an authorized UL representative has been advised of the possibility of such damage .In event shall UL's liabilit...

UL217 STANDARD FOR SAFETY Smoke Alarms NOVEMBER 23 .2016-UL 217 UL Standard for Safety for Smoke Alarms ,UL 217 Eighth Edition ,Dated October 30 ,2015 SUMMARY OF TOPICS The following revisions are being issued to ANSI /UL217 ,the Standard for Smoke Alarms : 1 .Updates to Polyurethane Flaming and Smoldering and Cooking Nuisance Tests Text that has been changed in any manner or impacted UL's electronic publishing system is marked with vertical line in the margin . The requirements are substantially in accordance with Proposal ()onthis subject dated October 7 ,2016 . All rights reserved .No part of this publication may be reproduced ,stored in a retrieval system ,or transmitted in any form by any means ,electronic ,mechanical photocopying ,recording ,or otherwise without prior permission of UL . UL provides this Standard " asis "withoutwarranty of any kind ,either expressed or implied ,including but not limited to ,the implied warranties of merchantability or fitness for any purpose In no event will UL be liable for any special ,incidental ,consequential ,indirect or similar damages , including loss of profits ,lost savings ,loss of data ,or any other damages arising out o...

/s6ulysinbunx3 uoqjeoojeH 0-0Lt0-629L-0 99l MARCH 222001-ul2166 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook .IL 60062-2096 UL Standard for Safety for Halocarbon Clean Agent Extinguishing System Units ,UL 2166 First Edition .Dated March 31 ,1999 Revisions :This Standard contains revisions through and including March 22 ,2001 A change in an effective date is indicated by a note following the affected item ,and giving both the previous effective date and the new date the requirement bees effective . The following table lists the future effective dates with the corresponding reference . Future Effective Dates References June30,2001 Entire Standard The master for this Standard at UL's Northbrook Office is the official document insofar as it relates to a UL service and the pliance of product with respect to the requirements for that product and service or if there are questions regarding the accuracy this Standard . UL's Standards for Safety are copyrighted UL .Neither printed copy of a Standard ,nor the distribution diskette for a Standard-on-Diskette and the file for the Standard the distribution diskette should be altered in any way .All of...

UL UL2108 ⑧ Underwriters Laboratories Inc . Standard for Safety Low Voltage Lighting Systems NOVEMBER 20 ,2009-UL 2108 UL Standard for Safety for Low Voltage Lighting Systems ,UL 2108 First Edition ,Dated February 27 ,2004 Summary of Topics These revisions to ANSI /UL2108 are being issued to address universal upkeep of UL Standards for Safety .These revisions are considered to be non-substantive and not subject to UL's STP process . Text that has been changed in any manner or impacted by UL's electronic publishing system is marked with a vertical line in the margin .Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement bees effective In the revisions dated July 16 ,2009 ,pages 19 ,20 ,45 ,and 46 have been intentionally deleted from the Standard due to the deletion or relocation of text . All rights reserved .No part of this publication may be reproduced ,stored in a retrieval system ,or transmitted in any form by any means ,electronic ,mechanical photocopying ,recording ,or otherwise without prior permission of UL . UL provides...

UL 21 sb1-55989-849-6 LP-Gas Hose This PDF Standard downloaded from . . OCTOBER 9 ,2006-UL 21 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,60062-2096 UL Standard for Safety for LP-Gas Hose ,UL 21 Ninth Edition ,Dated June 1 .1995 Revisions :This Standard contains revisions through and including October 9 ,2006 Summary of Topics Revision pages have been issued for the Standard for LP-Gas Hose ,UL 21 ,to revise the title page to reflect that the Standard is no longer ANSI approved . UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language ( SGML).SGML- -an international standard ( 8879-1986 )--is a descriptive markup language that describes a document's structure and purpose ,rather than its physical appearance on a page .Due to formatting differences resulting from the use of UL's new electronic publishing system ,please note that additional pages ( onwhich no requirements have been changed )may be included revision pages due to relocation of existing text and reformatting of the Standard Text that has been changed in any manner marked with vertical line in the margin . The revisions dated Oct...

UL2075 Gas and Vapor Detectors and Sensors UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL july11,2007-ul2075 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Gas and Vapor Detectors and Sensors ,UL 2075 First Edition .Dated November 5 ,2004 Revisions :This Standard contains revisions through and including July 11 ,2007 . Summary of Topics These revisions have been issued to update the Scope of the Standard and to make minor editorial changes .No changes in requirements are involved . UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language ( SGML).SGML- -an international standard ( ISO8879-1986 )--is descriptive markup language that describes a document's structure and purpose ,rather than its physical appearance on a page .Due to formatting differences resulting from the use of UL's new electronic publishing system ,please note that additional pages ( onwhich no requirements have been changed )may be ...