ANSI UL 1951-2011 UL Standard for Safety Electric Plumbing Accessories (Second Edition Reprint with revisions through and including august 25 2017)《电线管道附件安全标准》.pdf
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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1951 Electric Plumbing Accessories STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AU
2、THORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Electric Plumbing Accessories, UL 1951 Second Edition, Dated July 22, 2011 SUMMARY OF TOPICS This revision to ANSI/UL 1951 include the following changes in requirements: Clarify button or coin cel
3、l batteries of lithium technologies The revised requirements are substantially in accordance with Proposal(s) on this subject dated July 14, 2017. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. All rights reserve
4、d. 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 is without warranty of any kind, either expressed or impl
5、ied, 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 of prots, lost savings, loss of data, or any other damages arising out of the u
6、se 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 this Standard, regardless of the form of the claim. Users of the electronic ver
7、sions 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 or deviation introduced while purchaser is storing an electronic Standard on the
8、 purchasers computer system. AUGUST 25, 2017 UL 1951 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 25, 2017 UL 1951 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT P
9、ERMISSION FROM UL JULY 22, 2011 (Title Page Reprinted: August 25, 2017) 1 UL 1951 Standard for Electric Plumbing Accessories First Edition April, 1994 Second Edition July 22, 2011 This ANSI/UL Standard for Safety consists of the Second Edition including revisions through August 25, 2017. The most re
10、cent designation of ANSI/UL 1951 as an American National Standard (ANSI) occurred on August 25, 2017. ANSI 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. Pr
11、oposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (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, o
12、wnerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 1951-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 25, 2017 ELECTRIC PLUMB
13、ING ACCESSORIES - UL 1951 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS PART 1 ALL EQUIPMENT INTRODUCTION 1 Scope .5 2 Units of Measurement .5 3 Undated References 5 4 Glossary .5 CONSTRUCTION 5 Components 6B
14、 5.1 General 6B 5.2 Attachment plugs and receptacles 9 5.3 Batteries and battery chargers 10 5.3A Button or coin cell batteries of lithium technologies .10 5.4 Capacitors and lters .10A 5.5 Controls 11 5.6 Cords, cables, and internal wiring .14 5.7 Ground-fault, arc-fault, and leakage current detect
15、ors/interrupters .15 5.8 Heaters, heating elements and pads .15 5.9 Insulation systems .15 5.10 Light sources and associated components 16 5.11 Overcurrent protection 16 5.12 Power supplies .17 5.13 Printed wiring boards .17 5.14 Quick-connect wire connectors .17 5.15 Semiconductors and small electr
16、onic components 18 5.16 Supplemental insulation, insulating bushings, and assembly aids .18 5.17 Switches 19 5.18 Terminal blocks .20A 5.19 Transformers .20A 5.20 Valves (electrically operated) and solenoids 20B 5.21 Wire connectors 20B 5.22 Thermistors 20B 5A Safety Critical Functions 21 6 Frame an
17、d Enclosure 21 6.1 General 21 6.2 Barriers 22 6.3 Doors and covers .23 6.4 Cast metal 23 6.5 Sheet metal 23 6.6 Nonmetallic enclosures .26A 6.7 Outdoor-use enclosures 26A 6.8 Button or coin cell batteries of lithium technologies .26A 7 Mounting 26A 7.1 Permanently connected units 26A 7.2 Cord-connec
18、ted units .26B 8 Protection Against Corrosion .26B AUGUST 25, 2017 ELECTRIC PLUMBING ACCESSORIES - UL 1951 2AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 9 Accessibility of Uninsulated Live Parts, Film-Coated Wire, and Moving Parts 26B 10
19、 Field Connections .33 10.1 General .33 10.2 Equipment permanently connected electrically .34 10.3 Equipment cord connected 35 10.4 Strain relief 36 10.5 Bushing .36 11 Adhesives Used to Secure Parts .36 12 Mechanical Assembly .37 13 Current-Carrying Parts 38 14 Insulating Material 38 15 Internal Wi
20、ring 38 15.1 Mechanical protection .38 15.2 Splices and connections 39 16 Separation of Circuits .40 16.1 General .40 17 Grounding and Bonding .40 17.1 General .40 17.2 Grounding means 40 17.3 Terminals and leads 41 17.4 Grounding identication .41 17.5 Bonding .42 18 Lampholders .43 19 Motors .43 20
21、 Overcurrent- or Overload-Protective Devices .44 20.1 General .44 21 Capacitors .45 22 Switches and Controls .45 23 Controls End Product Test Parameters 46 23.1 General .46 23.2 Auxiliary controls .46 23.3 Operating controls (regulating controls) .46 23.4 Protective controls (limiting controls) 48 2
22、3.5 Controls using a temperature sensing device 49 24 Electronic Circuits 50 24.1 General .50 24.2 Electronic circuits evaluated to UL 60335-1 based requirements .50 25 Diaphragms, Gaskets, and Seals 50B 26 Spacings .50B 26A Clearance and creepage distances 52 26B Switch Mode Power Supplies 52B 26B.
23、1 Bridging components switch mode power supplies .52B 26B.2 Transformer insulation system .52B PROTECTION AGAINST INJURY TO PERSONS 27 General 52C 28 Sharp Edges .53 29 Enclosures and Guards 53 30 Materials .54 31 Rotating or Moving Members .54 32 Parts Subject to Pressure 55 33 Pressure-Relief Devi
24、ces .56 AUGUST 25, 2017 ELECTRIC PLUMBING ACCESSORIES - UL 1951 2BUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 34 Switches, Controls, and Interlocks 58 AUGUST 25, 2017 ELECTRIC PLUMBING ACCESSORIES - UL 1951 2CUL COPYRIGHTED MATERIAL NOT
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