EN 61965:2003
(Main)Mechanical safety of cathode ray tubes
Mechanical safety of cathode ray tubes
Applicable to cathode ray tubes and cathode ray tube assemblies which are intended for use as components in apparatus and which have integral protection with respect to the effects of implosion. A CRT covered by this standard is intended to be installed in an enclosure designed both to protect the rear of the CRT against mechanical or other damage under normal conditions of operation and to protect the user against particles expelled in a backwards direction from the CRT face in the event of implosion.
Mechanische Sicherheit von Kathodenstrahlröhren
Sécurité mécanique des tubes cathodiques
Applicable to cathode ray tubes and cathode ray tube assemblies which are intended for use as components in apparatus and which have integral protection with respect to the effects of implosion. A CRT covered by this standard is intended to be installed in an enclosure designed both to protect the rear of the CRT against mechanical or other damage under normal conditions of operation and to protect the user against particles expelled in a backwards direction from the CRT face in the event of implosion.
Mechanical safety of cathode ray tubes (IEC 61965:2003
General Information
Standards Content (Sample)
SLOVENSKI SIST EN 61965:2004
STANDARD
julij 2004
Mechanical safety of cathode ray tubes (IEC 61965:2003
ICS 31.120 Referenčna številka
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
EUROPEAN STANDARD EN 61965
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2003
ICS 31.100 Supersedes EN 61965:2001
English version
Mechanical safety of cathode ray tubes
(IEC 61965:2003)
Sécurité mécanique Mechanische Sicherheit
des tubes cathodiques von Kathodenstrahlröhren
(CEI 61965:2003) (IEC 61965:2003)
This European Standard was approved by CENELEC on 2003-10-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61965:2003 E
Foreword
The text of document 39364/FDIS, future edition 2 of IEC 61965, prepared by IEC TC 39, Electronic
tubes, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61965
on 2003-10-01.
This European Standard supersedes EN 61965:2001.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2004-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2006-10-01
The main change with respect to EN 61965:2001 is the inclusion of the requirements for cathode ray
tubes with film attached to the face plate.
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A and B are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61965:2003 approved by CENELEC as a European Standard
without any modification.
__________
- 3 - EN 61965:2003
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60065 (mod) 2001 Audio, video and similar electronic EN 60065 2002
apparatus - Safety requirements
IEC 60068-1 1988 Environmental testing
+ corr. October 1988 Part 1: General and guidance
+ A1 1992 EN 60068-1 1994
IEC 60216-1 2001 Electrical insulating materials - EN 60216-1 2001
Properties of thermal endurance
Part 1: Ageing procedures and
evaluation of test results
ISO 527-1 1993 Plastics - Determination of tensile
+ corr. 1 1994 properties EN ISO 527-1 1996
Part 1: General principles
ISO 527-3 1995 Part 3: Test conditions for films and EN ISO 527-3 1995
sheets
ISO 8510-1 1990 Adhesives - Peel test for a flexible- EN 28510-1 1993
bonded-to-rigid test specimen assembly
Part 1: 90 degree peel
INTERNATIONAL IEC
STANDARD
Second edition
2003-07
Mechanical safety of cathode ray tubes
Sécurité mécanique des tubes cathodiques
© IEC 2003 ⎯ Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
XA
International Electrotechnical Commission
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For price, see current catalogue
– 2 – 61965 © IEC:2003(E)
CONTENTS
FOREWORD . 5
INTRODUCTION .6
1 Scope . 7
2 Normative references. 7
3 Definitions . 8
4 General requirements . 9
4.1 Corrosion protection . 9
4.2 Mechanical damage. 9
4.3 Handling . 9
4.4 Film-coated CRTs. 9
5 Environmental conditioning .10
5.1 Standard atmospheric conditions for testing.10
5.2 Preconditioning.10
5.3 Thermal conditioning .10
6 Sampling .10
6.1 Sampling plans .10
6.2 Sample numbers.10
6.3 Compliance .10
7 Test preparation and set-up .10
7.1 Scratch patterns .10
7.2 Barriers .11
7.3 Mounting .11
7.4 Mounting position .11
8 Testing of large CRTs.11
8.1 Mechanical strength (ball impact test).11
8.2 Implosion test (missile) .12
8.3 Implosion test (thermal shock) .13
8.4 High-energy impact test.13
9 Testing of small CRTs.14
9.1 Mechanical strength (ball impact test).14
9.2 Implosion test (high ball).15
9.3 Implosion test (thermal shock) .15
9.4 High-energy impact test.15
10 Testing of prestressed banded CRTs with protective film .16
10.1 General .16
10.2 Film scoring pattern for CRTs with protective film .16
10.3 Peel test .17
10.4 Immersion test.17
11 Marking .17
12 Application notes for pre-stressed banded CRTs with protective film.18
13 Normative requirements for the use of Tables 1 and 2 (prestressed banded CRTs) .18
13.1 Sampling plan I: New construction .18
13.2 Sampling plan II: New construction with known resin or tape .19
13.3 Sampling plan III: Tension band and alternative tension band.19
13.4 Sampling plan IV: Alternative construction .20
61965 © IEC:2003(E) – 3 –
14 Normative requirements for the use of Tables 3 and 4 (prestressed banded with
protective film).21
14.1 Sampling plan I: New construction .21
14.2 Sampling plan II: New construction with known resin, tape, film or adhesive.22
14.3 Sampling plan III: Alternative tension band .22
14.4 Sampling plan IV: Alternative construction .23
15 Alternative thermal conditioning for use with Tables 3 and 4 (prestressed banded
with protective film).24
15.1 Additional peel force requirements where alternative thermal conditioning is
to be performed .24
15.2 Tensile strength test where alternative thermal conditioning is to be
performed.24
16 Normative requirements for the use of Tables 6 and 7 (bonded frame CRTs).25
16.1 Sampling plan I: New construction .25
16.2 Sampling plan II: Alternative construction .26
17 Normative requirements for the use of Tables 8 and 9 (laminated CRTs) .26
17.1 Sampling plan I: New construction .26
17.2 Sampling plan II: Alternative construction .26
Annex A (informative) Background to the development of this standard.46
A.1 Mechanical strength test .47
A.2 Implosion test .47
A.3 Small CRTs (76 mm to 160 mm diagonal) .47
A.4 Evaluation time .47
Annex B (informative) Velocity and potential force of glass particles expelled from a
CRT subjected to a ball impact – Ballistic and statistical calculations .48
B.1 Introduction.48
B.2 Analysis without friction.48
B.3 Analysis with friction .54
B.4 Potential threat .57
B.5 Conclusions .57
Figure 1 – Example of a test cabinet .35
Figure 2 – Example of a ball impact test.
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