UL-469-1993.pdf

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1、 STD-UL 4bS-ENGL 1993 9235795 0751192 82T UL 469 ISBN 0-7629-0203-5 Musical Instruments and Accessories Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 03:56:04 MDTNo reproduction or networking permit

2、ted without license from IHS -,-,- Underwriters Laboratories Inc., Northbrook, IlUnoU (847) 272-8800 Melville, NewYorkt(516) 2716200 Santa Clara, California (408) 985-2400 Fieseardi Triangle Park Northcadina*(919) 549-1400 Camas, Washingtow(360) 817-5500 Underwriters Laboratories Inc., founded in 18

3、94, is chartered as a not-for-profit organization without capital stock, under the laws of the State of Delaware, to establish, maintain, and operate laboratories for the examination and testing of devices, systems and materials to determine their relation to hazards to life and property, and to asc

4、ertain, define and publish standards, classifications and specifications for materiais, devices, products, equipment, constructions, methods, and systems affecting such hazards. UL Standards for Safety are developed under a procedure which provides for participation and comment from the affected pub

5、lic as well as industry. The procedure takes into consideration a survey of known existing standards and the needs and opinions of a wide variety of interests concerned with the subject matter of the standard. Thus manufacturers, consumers, individuals associated with consumer-oriented organizations

6、, academicians, government officials, industrial and commercial users, inspection authorities, insurance interests and others provide input to UL in the formulating of UL Standards for Safeh, to keep them consonant with social and technological advances. A not-for-profit organization dedicated to pu

7、blic safety and committed to quality service Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 03:56:04 MDTNo reproduction or networking permitted without license from IHS -,-,- STD=UL 4b9-ENGL 1997 W 9

8、275795 075LL9LI bT2 W August 18,1998 - UL 469 trl Underwriters Laboratories Inc. (UL) 333 Pfingsten Road Northbrook, IL 60062-2096 UL Standard for Safety Musical Instruments and Accessories, UL 469 for Third Edition, Dated September 26, 1997 Revisions: This Standard contains revisions through and in

9、cluding August 18, 1998. UL is in the process of converting its Standards for Safety to the Standard Generalized Markup Language (SGML). SGML - an international standard (IS0 8879-1986) - is a descriptive markup language that describes a document?s structure and purpose, rather than its physical app

10、earance on the page. Significant benefits that will result from UL?s use of SGML are increased productivity, reduced turnaround times, and data consistency, reusability, shareability, and portability. The changes contained in these revised pages are needed to modify the format and layout of this Sta

11、ndard for conversion to SGML. These editorial changes now in effect. A change is indicated by a note following the affected item. The note is preceded and followed by an asterisk. The revisions dated August 18, 1998 include a reprinted title page (page I) for this Standard. The revisions dated Augus

12、t 18, 1998 were issued to correct the titles used for some of the standards referenced in Appendix A. The master for this Standard at UL?s Northbrook Office is the official document insofar as it relates to a UL service and the compliance of a product with respect to the requirements for that produc

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15、ctronic, mechanical photocopying, recording, or otherwise without prior permission of UL. Revisions of UL Standards for Safety are issued from time to time. A UL Standard for Safety is current only if it incorporates the most recently adopted revisions. UL provides this Standard ?as is? without warr

16、anty 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 d

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18、 form of the claim. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 03:56:04 MDTNo reproduction or networking permitted without license from IHS -,-,- STDSUL 469-ENGL 1997 m 9275795 0751195 539 m tr2

19、August 18,1998 - UL 469 UL will attempt to answer support requests concerning Wordperfect, Envoy, and Standards-on-Diskette. However, this support service is offered on a reasonable efforts basis only, and UL may not be able to resolve every support request. UL supports a Standards-on-Diskette only

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27、re/printer setup used by UL and those of Standards-on-Diskette purchasers, the printed copy obtained by a purchaser may not look exactly like the on-line screen view or the printed Standard. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, figures,

28、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 effective date are located after the Standard, and are preceded by a “SUPERSEDED REQUIREMENTS“ notic

29、e. New product submittals made prior to a specified future effective date will be judged under all of the requirements in this Standard including those requirements with a specified future effective date, unless the applicant specifically requests that the product be judged under the current require

30、ments. 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, and Follow-Up Services after the effective date, and understanding of this should be signified in writ

31、ing. Copyright 1998 Underwriters Laboratories Inc. This Standard consists of pages dated as shown in the following checklist: Page Date trl-tr4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .August 18, 1998 Copyright Underwriters Labora

32、tories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 03:56:04 MDTNo reproduction or networking permitted without license from IHS -,-,- August 18. 1998 . UL 469 tr3 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

33、 . . September 26. 1997 (Reprinted August 18. 1998) 2. 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . August18. 1998 4-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34、 . September 26. 1997 14. 14A. 14B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .August 18. 1998 15-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . September 26. 1997 41. 42. 42A. 42

35、B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . August 18. 1998 43-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . September 26. 1997 66. 66A. 66B . . . . . . . . . . . . . . . . . . . .

36、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . August 18. 1998 67-72 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . September 26. 1997 73. 74. 74.4, 74B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37、 . . . . . . . . . . . . . August 18. 1998 75 - 81 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . September 26. 1997 82. 83 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Aug

38、ust18. 1998 84 - 89 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . September 26. 1997 90. 91 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .August 18. 1998 92 . . . . . . . .

39、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . September 26. 1997 AI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . August18. 1998 A2. sr1 - sr4 . . . . . . . . . . . . . . . .

40、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . September 26. 1997 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 03:56:04 MDTNo reproduction or networking permitted without licens

41、e from IHS -,-,- STDmUL 469-ENGL 1997 M 9275795 0751197 301 M t r 4 August 18,1998 - UL 469 No Text on This Page Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 03:56:04 MDTNo reproduction or networki

42、ng permitted without license from IHS -,-,- STD=UL 469-ENGL 1997 = 9275795 0751198 248 W SEPTEMBER 26, 1997 (Title Page Reprinted: August 18, 1998) 1 UL 469 Standard for Musical Instruments and Accessories First Edition - March, 1982 Second Edition - April, 1993 Third Edition September 26, 1997 An e

43、ffective date included as a note immediately following certain requirements is one established by Underwriters Laboratories Inc. Revisions of this standard will be made by issuing revised or additional pages bearing their date of issue. A UL Standard is current only if it incorporates the most recen

44、tly adopted revisions, all of which are itemized on the transmittal notice that accompanies the latest set of revised requirements. ISBN 0-7629-0203-5 COPYRIGHT 1986,1998 UNDERWRITERS LABORATORIES INC. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northw

45、estern Div./7838506130 Not for Resale, 08/30/2006 03:56:04 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 MUSICAL INSTRUMENTS AND ACCESSORIES . UL 469 AUGUST 18. 1998 CONTENTS FOREWORD INTRODUCTION 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

46、 . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

47、. . . . . 6 CONSTRUCTION 4 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 Mechanical Assemb

48、ly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 8 Protection Against Corrosion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14A 9 Current-Carrying Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14A 10 Accessibility of Live Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14A 11 Ex