UL 61965-2004 UL Standard for Safety Mechanical Safety for Cathode Ray Tubes (Second Edition Reprint with revisions through and including March 24 2014)《阴极射线管的机械安全性》.pdf

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2、FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Mechanical Safety for Cathode Ray Tubes, UL 61965 Second Edition, Dated July 27, 2004 SUMMARY OF TOPICS This revision of ANSI/UL 61965 includes an updated title page to reect reaffirmation of ANSI approval

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9、re located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. MARCH 24, 2014 UL 61965 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 24, 2014 UL 61965 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHO

10、RIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 27, 2004 (Title Page Reprinted: March 24, 2014) 1 UL 61965 Mechanical Safety for Cathode Ray Tubes First Edition October, 2001 Second Edition July 27, 2004 This ANSI/UL Standard for Safety consists of the Second Edition i

11、ncluding revisions through March 24, 2014. The most recent designation of ANSI/UL 61965 as a Reaffirmed American National Standard (ANS) occurred on March 20, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, Preface, or effective date information. Th

12、e National Difference Page and IEC Foreword are also excluded from the ANSI approval of IEC-based standards. 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

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14、ty of UL. COPYRIGHT 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 61965-2009 (R2014)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 26, 2009 MECHANICAL SAFETY FOR CATHODE RAY TUBES - UL 61965 2 No Text on This PageUL COPYRIGHTED MATERIA

15、L NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface (UL) 6 NATIONAL DIFFERENCES .6 FOREWORD 7 INTRODUCTION .9 1 Scope 10 2 Normative references .10 3 Denitions 11 4 General Requirements 12 4.1 Corrosion protection .12 4.2 Mechanical damage .12 4.3 Ha

16、ndling .12 4.4 Film coated CRTs .12 5 Environmental Conditioning .12 5.1 Standard atmospheric conditions for testing 12 5.2 Preconditioning .13 5.3 Thermal conditioning .13 6 Sampling .13 6.1 Sampling plans 13 6.2 Sample numbers 13 6.3 Compliance .13 7 Test Preparation and Set-up 13 7.1 Scratch patt

17、erns .13 7.2 Barriers 14 7.3 Mounting .14 7.4 Mounting position .14 8 Testing of Large CRTs .14 8.1 Mechanical strength (ball impact test) 14 8.2 Implosion test (missile) .15 8.3 Implosion test (thermal shock) 16 8.4 High-energy impact test 17 9 Testing of Small CRTs .18 9.1 Mechanical strength (bal

18、l impact test) 18 9.2 Implosion test (high ball) .19 9.3 Implosion test (thermal shock) 19 9.4 High-energy impact test 20 10 Testing of Prestressed Banded CRTs with Protective Film .21 10.1 General .21 10.2 Film scoring pattern for CRTs with protective lm 21 10.3 Peel test 21 10.4 Immersion test .22

19、 11 Marking 23 12 Application Notes for Pre-stressed Banded CRTs with Protective Film 23 13 Normative Requirements for the Use of Tables 1 and 2 (prestressed banded CRTs) 23 13.1 Sampling plan I: New construction 23 13.2 Sampling plan II: New construction with known resin or tape 25 13.3 Sampling pl

20、an III: Tension band and alternative tension band 25 AUGUST 26, 2009 MECHANICAL SAFETY FOR CATHODE RAY TUBES - UL 61965 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 13.4 Sampling plan IV: Alternative construction .26 14 Normative Require

21、ments for the Use of Tables 3 and 4 (prestressed banded with protective lm) .27 14.1 Sampling plan I: New construction 27 14.2 Sampling plan II: New construction with known resin, tape, lm or adhesive .29 14.3 Sampling plan III: Alternative tension band 29 14.4 Sampling plan IV: Alternative construc

22、tion .31 15 Alternative Thermal Conditioning for Use with Tables 3 and 4 (prestressed banded with protective lm) 31 15.1 Additional peel force requirements where alternative thermal conditioning is to be performed .31 15.2 Tensile strength test where alternative thermal conditioning is to be perform

23、ed 32 16 Normative Requirements for the Use of Tables 6 and 7 (bonded frame CRTs) .32 16.1 Sampling plan I: New construction 32 16.2 Sampling plan II: Alternative construction 34 17 Normative Requirements for the Use of Tables 8 and 9 (Laminated CRTs) 34 17.1 Sampling plan I: New construction 34 17.

24、2 Sampling plan II: Alternative construction 35 Tables Figures Annex A (informative) Background to the development of this standard A.1 Mechanical strength test 56 A.2 Implosion test .56 A.3 Small CRTs (76 mm to 160 mm diagonal) 56 A.4 Evaluation time 56 Annex B (informative) Velocity and potential

25、force of glass particles expelled from a CRT subjected to a ball impact Ballistic and statistical calculations B.1 Introduction .57 B.2 Analysis without friction .58 B.2.1 Introduction .58 B.2.2 Equations of motion .59 B.2.3 Minimum velocity to reach a prescribed distance 61 B.2.4 Comparison of kine

26、tic energies 64 B.3 Analysis with friction 65 B.3.1 Introduction .65 B.3.2 Equation of motion 66 B.3.3 Minimum velocity to reach a prescribed distance 70 B.3.4 Inuence of the cross-sectional area .71 B.4 Potential threat 71 B.4.1 Considerations of glass-to-skin impact .71 B.5 Conclusions .72 MARCH 2

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28、RTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface (UL) This UL Standard is based on IEC Publication 61965: Second edition, Mechanical safety of cathode ray tubes. IEC publication 61965 is copyrighted by the IEC. This edition has been issued to satisfy UL Standards policy to reect

29、 reaffirmation of ANSI approval. The text, gures and tables of IEC Publication Mechanical safety of cathode ray tubes, 61965 copyright 2003 are used in this Standard with the consent of the IEC and the American National Standards Institute (ANSI). The IEC copyrighted material has been reproduced wit

30、h permission from ANSI. ANSI should be contacted regarding the reproduction of any portion of the IEC material. The IEC Foreword and Introduction are not a part of the requirements of this Standard but are included for information purposes only. Copies of IEC Publication 61965 may be purchased from

31、ANSI, 11 West 42 nd Street, New York, New York, 10036, (212) 642-4900. Note Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of this Standard to judge its suitability for their particular purpos

32、e. UL Effective Date UL 61965, Second Edition, is now in effect. A UL effective date is one established by Underwriters Laboratories Inc. and is not part of the ANSI approved standard. MARCH 24, 2014 MECHANICAL SAFETY FOR CATHODE RAY TUBES - UL 61965 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTH

33、ER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NATIONAL DIFFERENCES GENERAL National Differences from the text of International Electrotechnical Commission (IEC) Publication 61965, Mechanical safety of cathode ray tubes, copyright 2003 are indicated by notations (differences) and are pre

34、sented in bold text. There are ve types of National Differences as noted below. The difference type is noted on the rst line of the National Difference in the standard. The standard may not include all types of these National Differences. DR These are National Differences based on the national regul

35、atory requirements. D1 These are National Differences which are based on basic safety principles and requirements, elimination of which would compromise safety for consumers and users of products. D2 These are National Differences based on safety practices. These are differences for IEC requirements

36、 that may be acceptable, but adopting the IEC requirements would require considerable retesting or redesign on the manufacturers part. DC These are National Differences based on the component standards and will not be deleted until a particular component standard is harmonized with the IEC component

37、 standard. DE These are National Differences based on editorial comments or corrections. Each national difference contains a description of what the national difference entails. Typically one of the following words is used to explain how the text of the national difference is to be applied to the ba

38、se IEC text: Addition / Add - An addition entails adding a complete new numbered clause, subclause, table, gure, or annex. Addition is not meant to include adding select words to the base IEC text. Modication / Modify - A modication is an altering of the existing base IEC text such as the addition,

39、replacement or deletion of certain words or the replacement of an entire clause, subclause, table, gure, or annex of the base IEC text. Deletion / Delete - A deletion entails complete deletion of an entire numbered clause, subclause, table, gure, or annex without any replacement text. MARCH 24, 2014

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41、R REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTERNATIONAL ELECTROTECHNICAL COMMISSION MECHANICAL SAFETY OF CATHODE RAY TUBES FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committe

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