UL-826-2007.pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 826 Household Electric Clocks Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 12/17/2007 19:1

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4、IL 60062-2096 UL Standard for Safety for Household Electric Clocks, UL 826 Eleventh Edition, Dated November 29, 2007 Summary of Topics This New Edition of ANSI/UL 826 is being issued to address universal upkeep of UL Standards for Safety. The revisions to this new edition are considered to be non-su

5、bstantive and not subject to ULs STP process. As indicated on the title page (page 1), 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 followed to retain the approved text of this ANSI/U

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14、tifi cation. NOVEMBER 29, 2007 UL 826tr1 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 12/17/2007 19:13:29 MSTNo reproduction or networking permitted without license from IHS -,-,- UL COPYRIGHTED MATER

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22、rements in this Standard are now in effect, except for those paragraphs, sections, tables, fi gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future

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24、date, unless the applicant specifi cally requests that the product be judged under the current requirements. However, if the applicant elects this option, it should be noted that compliance with all the requirements in this Standard will be required as a condition of continued Listing, Recognition,

25、and Follow-Up Services after the effective date, and understanding of this should be signifi ed in writing. Copyright 2007 Underwriters Laboratories Inc. This Standard consists of pages dated as shown in the following checklist: PageDate 1-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

26、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . November 29, 2007 A1-A2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . November 29, 2007 NOVEMBER 29, 2007 UL 826tr2 Copyri

27、ght Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 12/17/2007 19:13:29 MSTNo reproduction or networking permitted without license from IHS -,-,- UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR

28、DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 29, 2007 1 UL 826 Standard for Household Electric Clocks First Edition October, 1966 Second Edition October, 1968 Third Edition January, 1974 Fourth Edition July, 1974 Fifth Edition October, 1979 Sixth Edition January, 1981 Seventh Edition November, 1

29、985 Eighth Edition July, 1990 Ninth Edition June, 1995 Tenth Edition August, 2000 Eleventh Edition November 29, 2007 The most recent designation of ANSI/UL 826 as an American National Standard (ANSI) occurred on October 13, 2004. The ANSI approval for this standard does not include the Cover Page, T

30、ransmittal Pages, Title Page, or effective date information. This ANSI/UL Standard for Safety consists of the Eleventh edition including revisions through November 29, 2007. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submit

31、ted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) 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 reg

32、arding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2007 UNDERWRITERS LABORATORIES INC. ANSI/UL 826-2004 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 12/17/2007 19:13:

33、29 MSTNo reproduction or networking permitted without license from IHS -,-,- UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 29, 2007HOUSEHOLD ELECTRIC CLOCKS - UL 8262 No Text on This Page Copyright Underwriters Laboratories Inc. P

34、rovided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 12/17/2007 19:13:29 MSTNo reproduction or networking permitted without license from IHS -,-,- UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM

35、 UL CONTENTS INTRODUCTION 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2.1 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2.2 Units of measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37、 . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.3 Undated references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 3 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

38、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 CONSTRUCTION 4 Frame and Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . .

39、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 4.2 Accessibility of live parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 4.3 Mounting means . . . . . . . . . . . . . . . . . . . . . . . .

40、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 4.4 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 5 Corrosion Resistance . . . . . . . . . . . . . . . . . . . . . .

41、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 6 Mechanical Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 7 Supply Connections Cord-Connected Clocks . . . . . . . . .

42、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 7.1 Cords and plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 7.2 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

43、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 7.3 Strain relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 7.4 Bushings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

44、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 8 Supply Connections Permanently Connected Clocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 8.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

45、. . . . . . . . . . . . . . . . . . . . . . . . .17 8.2 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 8.3 Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

46、. . . . . . . . . . . . . . . . . . . . . . . . . . . .18 8.4 Leads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 9 Live Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

47、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 10 Insulating Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 11 Internal Wiring . . . . . . . . . . . . . . . . . . . . . . .

48、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 12 Coil Windings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 13 Spacings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 14 Secondary Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .