ImageVerifierCode 换一换
格式:PDF , 页数:47 ,大小:766.65KB ,
资源ID:438916      下载积分:10000 积分
快捷下载
登录下载
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   
注意:如需开发票,请勿充值!
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【http://www.mydoc123.com/d-438916.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: 微信登录  

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(ANSI UL 1558-2016 UL Standard for Safety Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear (Fifth Edition Reprint with Revisions Through and Including June 23 2017).pdf)为本站会员(wealthynice100)主动上传,麦多课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,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

ANSI UL 1558-2016 UL Standard for Safety Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear (Fifth Edition Reprint with Revisions Through and Including June 23 2017).pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1558 Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL

2、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear, UL 1558 Fifth Edition, Dated February 18, 2016 SUMMARY OF TOPICS This revision of UL 1558 was issued to i

3、ncorporate the following changes to the standard: Editorial Revision of Requirements for Wire Bending Space in Table 16.2 The requirements are substantially in accordance with Proposal(s) on this subject dated April 28, 2017. Text that has been changed in any manner or impacted by ULs electronic pub

4、lishing system is marked with a vertical line in the margin. 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 prov

5、ides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss

6、of prots, 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 no event shall ULs liability for any damage ever exceed the price paid for

7、this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error o

8、r deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. JUNE 23, 2017 UL 1558 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 23, 2017 UL 1558 tr2 No Text on This PageUL COPYRIGHTED

9、 MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 18, 2016 (Title Page Reprinted: June 23, 2017) 1 UL 1558 Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear First Edition June, 1983 Second Edition September, 1988 Third Editio

10、n October, 1993 Fourth Edition February, 1999 Fifth Edition February 18, 2016 This ANSI/UL Standard for Safety consists of the Fifth Edition including revisions through June 23, 2017. The most recent designation of ANSI/UL 1558 as an American National Standard (ANSI) occurred on June 23, 2017. ANSI

11、approval for a standard does not include the Cover Page, Transmittal Pages and Title Page. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development Syste

12、m (CSDS) at https:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIG

13、HT 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 1558-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 18, 2016 UL 1558 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT P

14、ERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Glossary .5 3 References .5 4 General 5 CONSTRUCTION 5 Accelerated Aging of Gaskets 9 6 Primary or Power Carrying Circuits 9 6.1 General .9 6.2 Bus bars 9 7 Grounding 11 8 Control and Secondary Wiring .14 8.1 General 14 8.2 Wiring terminals contro

15、l circuits 15 9 Location of Operating Means 15 10 Receptacles 16 11 Impact and Pressure Viewing Panes 16 12 Spacings 17 12.1 General .17 12.2 Details 17 12.3 Insulating barriers 22 12.4 Clamped joint 23 13 Service Equipment Use 23 13.1 General 23 13.2 Neutral disconnecting means 26 13.3 Equipment on

16、 supply side of disconnect 27 14 Multiple Source Switchgear 27 15 Corrosion Protection 27 16 Wiring Space .28 16.1 General .28 16.2 Wire bending space and gutter width .28 16.3 Clear wiring space 34 16.4 Wiring .35 17 Working Space .35 PERFORMANCE 18 General 35 MARKING 19 General .35 19.1 Details 35

17、 19.2 Location .35 19.3 Service equipment .36 19.4 Ground fault protection 37 19.5 Main devices 38 FEBRUARY 18, 2016 UL 1558 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 19.6 Emergency circuits .38 19.7 Transformers 38 19.8 Rainproof .38

18、 19.9 Taps 39 INSTALLATION INSTRUCTIONS 20 Field Testing of Ground-Fault Protection of Equipment 39 FEBRUARY 18, 2016 UL 1558 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover metal-enclosed l

19、ow-voltage power circuit breaker switchgear assemblies containing but not limited to such devices as low-voltage power circuit breakers, other interrupting devices, switches, control, instrumentation and metering, protective and regulating equipment. 1.2 These requirements cover equipment intended f

20、or use in ordinary locations in accordance with the National Electrical Code. 1.3 These requirements are intended to supplement and be used in conjunction with the Standard for Metal-Enclosed Low Voltage Power Circuit Breaker Switchgear, ANSI C37.20.1, and the Standard for Conformance Testing of Met

21、al-Enclosed Low-Voltage AC Power Circuit Breaker Switchgear Assemblies, ANSI C37.51. 1.4 These requirements cover equipment rated 1000 V ac or less nominal, 1058 V ac maximum. 2 Glossary 2.1 TAP A terminal or provision for a terminal intended for eld wiring that is located on the supply side of the

22、service disconnecting means. The tap is intended to be used in accordance with the National Electrical Code, ANSI/NFPA 70. 3 References 3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code

23、or standard. 4 General 4.1 Requirements for the equipment covered by this Standard are contained in the Standard for Metal-Enclosed Low-Voltage Circuit Breaker Switchgear, ANSI C37.20.1 and the Standard for Conformance Testing of Metal-Enclosed Low-Voltage AC Power Circuit Breaker Switchgear Assembl

24、ies, ANSI C37.51. The requirements in this Standard shall be applied in addition to those contained in the above documents, or as alternatives where so specied. 4.2 It is specically not intended that these requirements be used alone to evaluate these devices. 4.3 Figures 4.1 4.3 show typical switchg

25、ear layouts. It is recognized that other arrangements are possible. This is generated text for gtxt. NOVEMBER 7, 2016 UL 1558 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 4.1 Typical switchgear layout A. Utility Metering, see 13.2

26、.5. B. GFP Sensor (Zero Sequence Type), see 13.1.5 13.1.13. C. GFP Sensor (Residual Type), see 13.1.5 13.1.13. D. GFP Sensor (Ground Return Type), see 13.1.5 13.1.13. E. Neutral Disconnect Link, see 7.11, 13.1.5 13.1.13, and 13.2.1 13.2.5. (For other than ground return type GFP, the neutral disconne

27、ct link may be located on the line or load side of the GFP sensor.) F. Main Bonding Jumper, see 7.6. G. Ground Bus, see 7.1 7.8. H. Frame and Structure Grounding, see 7.2. I. Grounding Electrode Conductor, see 7.4 and 13.1.5 13.1.13. FEBRUARY 18, 2016 UL 1558 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED

28、FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 4.2 Typical double-ended switchgear a Other variations are possible. b Tie breaker disconnect. See 14.1 and 14.2. c The neutral bus and ground bus may be combined if ground return type ground fault protection is not used and

29、the sections are marked Suitable only for use as service equipment. d Ground return type ground fault protection sensor in accordance with 13.1.9. e Zero sequence or residual type ground fault protection sensor in accordance with 13.1.7 and 13.1.8. f Size of main bonding jumper based on largest serv

30、ice disconnect. FEBRUARY 18, 2016 UL 1558 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 4.3 Typical double-ended switchgear a Tie breaker disconnect. See 14.1 and 14.2. b Additional ground return type ground fault protection sensor

31、s utility interlocked with (d) so as to function only when fault current is also sensed by (d). c Size of main bonding jumper based on largest service disconnect. d Ground return type ground fault protection sensor in accordance with 13.1.9. e Zero sequence or residual type ground fault protection s

32、ensor in accordance with 13.1.7 and 13.1.8. FEBRUARY 18, 2016 UL 1558 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONSTRUCTION 5 Accelerated Aging of Gaskets 5.1 The requirements of this section are applicable to gaskets relied upon to

33、enable an enclosure to meet the rain test specied in 6.2.10 of ANSI C37.20.1-2002. 5.2 A gasket of an elastomeric or thermoplastic material or a composition gasket utilizing an elastomeric material employed to make an enclosure rainproof shall comply with 5.3 and 5.4. 5.3 If an enclosure is provided

34、 with a rubber or rubber-like gasket, samples of the gasket shall be subjected to a temperature of 70 1C (158 1.8F) in circulating air for 168 hours. The tensile strength after the exposure shall not be less than 60 percent and the elongation shall not be less than 75 percent of the values determine

35、d with unaged samples. 5.4 A gasket of thermoplastic material, or a composition thereof, may be accepted after consideration of the effects of heat aging, distortion under conditions of use, and the means of securing the gasket to the cover or enclosure. 6 Primary or Power Carrying Circuits 6.1 Gene

36、ral 6.1.1 The requirements of this section shall be applied in addition to those specied in 7.1.1 of ANSI C37.20.1-2002. 6.2 Bus bars 6.2.1 The bending of a bus bar shall not result in visible cracks, but roughening or slight surface crazing is acceptable. 6.2.2 A bolted joint involving aluminum bus

37、 bars shall comply with the requirements of 6.2.3 and 6.2.4, unless: a) A spring washer as described in 6.2.6 is used at one end of each bolt securing current- carrying parts together is used, or b) A locknut or a split-ring lock washer and a at washer as described in 6.2.5 is used and each aluminum

38、 bus in the joint has a tensile yield strength of at least 20,000 psi (138 MPa). c) A at washer, as described in 6.2.5, and aluminum bolts are used with aluminum bus bars. 6.2.3 A switchgear bus, as mentioned in 6.2.2, that employs a bolted joint construction with aluminum bus bars shall be subjecte

39、d to the test described in 6.2.4. The temperature rise at the joint during the 500th cycle shall not be more than 15C (27F) higher than the temperature rise at the 25th cycle. Exception: Constructions described in 6.2.2 (a), (b), or (c), need not comply with this requirement. FEBRUARY 18, 2016 UL 15

40、58 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6.2.4 The test sample is to consist of an assembly of bus bars connected together to form a series circuit. The bus bars are to be clamped together with the joint construction used in actua

41、l production. The number and size of the bus bars are to represent the maximum ampere rating and the maximum current density in which the joint construction is to be employed. This may necessitate more than one test. The length of each bus bar is to be not less than 2 ft (610 mm). The bus bar is to

42、be connected to a power supply by any convenient means that will not affect the joint temperature. The power supply is to be adjusted to deliver a value of current that will result in a temperature of 75C (135F) above room temperature at the joint. The assembly is then to be subjected to a 500 cycle

43、 test. At the end of the 24th cycle, the current is to be readjusted to bring the temperature of the joint to 75C (135F) above room temperature. At the end of the 25th and 500th cycles, the temperatures are to be recorded. The temperatures are to be measured on both sides of the joint as close as po

44、ssible to the bolt. The cycling rate is to be 3 hours on and 1 hour off. The on period during which temperatures are recorded may be extended to more than 3 hours if necessary for the joint to attain thermal equilibrium. 6.2.5 The at washer mentioned in 6.2.2 (b) and (c) shall have a nominal thickne

45、ss of at least 1/6 that of the diameter of the bolt and shall have an outer diameter at least 150 percent of bolt and not less than the outer diameter of any spring washer employed. 6.2.6 A typical spring washer as mentioned in 6.2.2 is a dished washer of stainless, or hardened and tempered steel, h

46、aving an outer diameter not less than 150 percent of the bolt diameter, a thickness not less than 1/8 of the bolt diameter, and nominally dished not less than 3-1/2 percent of the bolt diameter. Other congurations are acceptable if they provide equivalent spring action. 6.2.7 A construction other th

47、an described in 6.2.2 may be accepted if it is investigated and found acceptable for the particular application. 6.2.8 Unless investigated for such use, a bolted connection between two bus bars or between a bus bar and another current carrying part shall not depend on any polymeric insulation to mai

48、ntain the clamping force and shall not depend on thermoplastic material in any case. 6.2.9 When bolts, nuts, and washers are provided for connecting through bus to other sections, the length of the bolts shall be such that spacings in accordance with Table 12.1 are maintained. 6.2.10 A bus bar or un

49、insulated live part, other than a pressure wire connector as mentioned in the Exception of 12.2.7, shall be secured so that ordinary vibration will not loosen the securing means, and shall be prevented from turning or shifting in position if any spacings less than half those indicated in Table 12.1 would result from such turning or shifting. A bus bar provided with one or more insulators that must be removed when a unit is installed shall be prevented from any turning that would result

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