EN 60068-2-33:1999

Environmental testing - Part 2: Tests - Guidance on change of temperature tests

Gives guidance to designers and testing personnel on the specification and use of change of temperature tests. A change of temperature test is intended to determine the effect on the specimen of a change of temperature or a succession of changes of temperature.

Umweltprüfungen - Teil 2: Prüfungen - Leitfaden zur Prüfgruppe N: Temperaturwechsel

Essais d'environnement - Partie 2: Essais - Guide pour les essais de variations de température

Donne, aux bureaux d'études et au personnel exécutant les essais, un guide concernant la rédaction et l'utilisation des essais de variations de température. Un essai de variation de température est destiné à déterminer les effets sur le spécimen d'une variation de température ou d'une succession de variations de température.

Environmental testing - Part 2: Tests - Guidance on change of temperature tests

General Information

• Status: Withdrawn
• Publication Date: 14-Nov-1999
• Withdrawal Date: 14-May-2000
• ICS: 19.040 - Environmental testing
• Technical Committee: CLC/SR 104 - Environmental conditions, classification and methods of test
• Drafting Committee: IEC/TC 104 - IEC_TC_104
• Parallel Committee: IEC/TC 104 - IEC_TC_104
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 01-Jul-2012
• Completion Date: 01-Jul-2012
• Ref Project: SIST EN 60068-2-33:2001 - Environmental testing -- Part 2: Tests - Guidance on change of temperature tests

Relations

• Replaced By: EN 60068-2-14:2009 - Environmental testing - Part 2-14: Tests - Test N: Change of temperature
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60068-2-33:2001
01-september-2001
Environmental testing - Part 2: Tests - Guidance on change of temperature tests
Environmental testing -- Part 2: Tests - Guidance on change of temperature tests
Umweltprüfungen -- Teil 2: Prüfungen - Leitfaden zur Prüfgruppe N: Temperaturwechsel
Essais d'environnement -- Partie 2: Essais - Guide pour les essais de variations de
température
Ta slovenski standard je istoveten z: EN 60068-2-33:1999
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
SIST EN 60068-2-33:2001 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60068-2-33:2001

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SIST EN 60068-2-33:2001

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SIST EN 60068-2-33:2001

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SIST EN 60068-2-33:2001
CEI
NORME
INTERNATIONALE IEC
68-2-33
INTERNATIONAL
Première édition
STANDARD
First edition
1971
Essais fondamentaux climatiques
et de robustesse mécanique
Deuxième partie:
Essais
Guide pour les essais de variations de température
Basic environmental testing procedures
Part 2:
Tests
Guidance on change of temperature tests
© CEI 1971 Droits de reproduction réservés — Copyright - all rights reserved
Aucune parte de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun pro- any form or by any means, electronic or mechanical,
cédé, électronique ou mécanique, y compris la photocopie et including photocopying and microfilm, without permission
les microfilms, sans l'accord écrit de l'éditeur. in writing from the publisher.
Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé
Genève, Suisse
Commission Electrotechnique Internationale CODE PRIX
International Electrotechnical Commission PRICE CODE
IEC MewayHapoaHaa 3neKrporexHHVecKaa HoMHCCHa
• • Pour prix, voir catalogue en vigueur
For price, see current catalogue

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SIST EN 60068-2-33:2001
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
BASIC ENVIRONMENTAL TESTING PROCEDURES
Part 2: Tests — Guidance on change of temperature tests
FOREWORD
1) The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on which all the
National Committees having a special interest therein are represented, express, as nearly as possible, an international
consensus of opinion on the subjects dealt with.
2) They have the form of recommendations for international use and they are accepted by the National Committees in that
sense.
3)
In order to promote this international unification, the IEC expresses the wish that all National Committees having as
yet no national rules, when preparing such rules, should use the IEC recommendations as the fundamental basis for these
rules in so far as national conditions will permit.
4) The desirability is recognized of extending international agreement on these matters through an endeavour to harmonize
national standardization rules with these recommendations in so far as national conditions will permit. The National
Committees pledge their influence towards that end.
PREFACE
This Recommendation has been prepared by Sub-Committee 50B, Climatic Tests, of IEC Technical
Committee No. 50, Environmental Testing.
It is intended to give guidance for Test N : Change of Temperature (I EC Publication 68-2-14).
A first draft was discussed at the meeting held in Stockholm in 1968, as a result of which a new draft
was submitted to the National Committees for approval under the Six Months' Rule in January 1969.
The following countries voted explicitly in favour of publication :
Australia Korea (Republic of)
Austria Netherlands
Belgium Norway
Czechoslovakia Romania
Denmark South Africa
Finland Switzerland
Turkey
Germany
Hungary United Kingdom
Israel United States of America
Japan

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SIST EN 60068-2-33:2001
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BASIC ENVIRONMENTAL TESTING PROCEDURES
Part 2: Tests — Guidance on change of temperature tests
1. Introduction
This Recommendation gives guidance to designers and testing personnel on the specification
and use of change of temperature tests.
A change of temperature test is intended to determine the effect on the specimen of a change
of temperature or a succession of changes of temperature.
It is not intended to show effects which are due only to the high or low temperature. For these
effects, the dry heat test or the cold test should be used.
The effect of such tests is determined by :
— values of high and low conditioning temperature between which the change is to be effected ;
— the conditioning times for which the test specimen is kept at these temperatures ;
— the rate of change between these t
...