UL 508C-2016 UL Standard for Safety Power Conversion Equipment (Fourth Edition Reprint with Revisions Through and Including June 11 2018).pdf
《UL 508C-2016 UL Standard for Safety Power Conversion Equipment (Fourth Edition Reprint with Revisions Through and Including June 11 2018).pdf》由会员分享,可在线阅读,更多相关《UL 508C-2016 UL Standard for Safety Power Conversion Equipment (Fourth Edition Reprint with Revisions Through and Including June 11 2018).pdf(149页珍藏版)》请在麦多课文档分享上搜索。
1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 508C Power Conversion Equipment STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHO
2、RIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Power Conversion Equipment, UL 508C Fourth Edition, Dated May 16, 2016 Summary of Topics This new edition was issued to incorporate the following changes: Modication of Short-Circuit Testing Requirem
3、ents Clarication of Control Circuit Transformer Protection Requirements Revision of Ratings for Capacitors in AC Circuits Revision of Marking and Instruction Requirements to Use Appropriate Signal Words Revision of Frequency Requirements for Dielectric Voltage Withstand Testing Revision of Breakdown
4、 of Components Testing in Secondary Circuits Revision of Table 63.1 to Include Marking Requirements in 56.6 and 56.7 Slash and Straight Voltage Ratings for Drives with a 3-Phase Input Revision to the conductor temperature limit during the Temperature Test, Section 40 Revision of 56.7 to align with r
5、equirements in NFPA 70 Revisions to Section 68, Plenum Rated Drives The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated September 9, 2011 and November 1, 2013. All rights reserved. No part of this publication may be reproduced, stored in a retrieva
6、l 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 is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchanta
7、bility or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss 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 authoriz
8、ed 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 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
9、 UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. MAY 16, 2016 UL 508C tr1UL COPYRIGHTED MA
10、TERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 16, 2016 UL 508C tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 16, 2016 1 UL 508C Standard for Power Conversion Equip
11、ment First Edition December, 1993 Second Edition November, 1996 Third Edition May, 2002 Fourth Edition May 16, 2016 This ANSI/UL Standard for Safety consists of the Fourth Edition. The most recent designation of ANSI/UL 508C as an American National Standard (ANSI) occurred on May 16, 2016. ANSI appr
12、oval 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 System (C
13、SDS) at http:/. 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. COPYRIGHT 20
14、16 UNDERWRITERS LABORATORIES INC. ANSI/UL 508C-2016UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 16, 2016 POWER CONVERSION EQUIPMENT - UL 508C 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DIS
15、TRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .7 2 Glossary .7 3 Units of Measurement 10 4 Components 10 5 Undated References .10 ENCLOSURE CONSTRUCTION 6 Frames and Enclosure .10 6.1 General 10 6.2 Cast metal 11 6.3 Sheet metal 11 6.4 Doors and covers .15 6.5 Polymeric .19 6.6
16、Bonding 20 6.7 Resistance measurement .22 6.8 Openings in enclosure .22 6.9 Accessibility of live parts .22 6.10 Ventilating openings 25 6.11 Forced ventilation 26 6.12 Observation windows .26 6.13 Wire bending space 26 ENVIRONMENTAL RATING RELATED ENCLOSURE CONSTRUCTION 7 General .27 8 Protection A
17、gainst Corrosion 27 ENVIRONMENTAL RATING RELATED ENCLOSURE PERFORMANCE 9 General .28 NON-ENVIRONMENTAL RATING RELATED ENCLOSURE PERFORMANCE 10 General 30 11 Securement of Snap-On Cover Test 30 INSTRUCTIONS AND MARKINGS PERTAINING TO ENCLOSURES 12 Permanence of Marking .30 13 Details .31 DEVICE CONST
18、RUCTION 14 General 31 15 Protection Against Corrosion .31 16 Provisions for Mounting 31 17 Insulating Material 32 MAY 16, 2016 POWER CONVERSION EQUIPMENT - UL 508C 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 18 Means for Switching 34 19
19、 Live Parts 35 20 Drive Protection 35 20.1 General .35 20.2 Control circuit wiring 36 20.3 Control circuit transformer .38 20.4 Control circuit wiring and transformer combination 39 21 Capacitors .40 22 Fuseholders 40 23 Internal Wiring 41 23.1 General .41 23.2 Routing .41 23.3 Flexing 41 23.4 Color
20、 coding .42 23.5 Splices and connections 42 23.6 Splice insulation 43 24 External Interconnections 43 24.1 Open equipment .43 24.2 Enclosed equipment 43 24.3 Interconnecting cords and cables 43 25 Transformers .44 26 Blower Motors 44 27 Supply Connections .45 27.1 General .45 27.2 Permanently connec
21、ted equipment .45 27.3 Tapped holes for conduit 45 27.4 Knockouts .46 27.5 Wiring terminals and leads 46 27.6 Cord-connected equipment 49 28 Cord-Connected Programming and Diagnostic Units .50 29 Risk of Electric Shock .51 30 Risk of Fire 51 31 Lithium Battery Circuits 52 32 Isolated Secondary Circu
22、its 52 32.1 General .52 32.2 Class 2 circuits .55 32.3 Limited voltage/current circuits .55 32.4 Limited voltage circuits 56 32.5 Isolated power supply circuits 56 32.6 Limited energy circuits 57 32.7 Limiting impedance circuits 57 33 Limited Voltage Circuit Overcurrent Protection .59 33.1 General .
23、59 33.2 Primary overcurrent protection .59 33.3 Secondary overcurrent protection 60 34 Separation of Circuits .60 35 Isolation Devices .61 36 Spacings 62 36.1 General .62 36.2 Spacings other than at eld-wiring terminals 65 36.3 Spacings at eld-wiring terminals for pollution degree 2 environments 67
24、36.4 Spacings for drives having general ratings for pollution degree 2 environments 67 36.5 Spacings for drives having limited ratings .68 MAY 16, 2016 POWER CONVERSION EQUIPMENT - UL 508C 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 36.
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- UL508C2016ULSTANDARDFORSAFETYPOWERCONVERSIONEQUIPMENTFOURTHEDITIONREPRINTWITHREVISIONSTHROUGHANDINCLUDINGJUNE112018PDF
![提示](http://www.mydoc123.com/images/bang_tan.gif)
链接地址:http://www.mydoc123.com/p-1068275.html