EN 60068-2-78:2013

Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state

NEW! IEC 60068-2-78:2012 is available as IEC Standards+ 60068-2-78:2012 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60068-2-78:2012 establishes a test method for determining the ability of components or equipment to withstand transportation, storage and use under conditions of high humidity. The object of this standard is to investigate the effect of high humidity at constant temperature without condensation on a specimen over a prescribed period. It is applicable to small equipment or components as well as large equipment, and can be applied to both heat-dissipating and non-heat-dissipating specimens. This second edition cancels and replaced the first edition, published in 2001 and constitutes a technical revision. This edition includes editorial and format changes with respect to the previous edition: - The test chamber from IEC 60068-3-6 has been introduced.

Umgebungseinflüsse - Teil 2-78: Prüfverfahren - Prüfung Cab: Feuchte Wärme, konstant

Essais d'environnement - Partie 2-78: Essais - Essai Cab: Chaleur humide, essai continu

NEW! La CEI 60068-2-78:2012 est disponible sous forme de IEC Standards+ 60068-2-78:2012 qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente. La CEI 60068-2-78:2012 établit une méthode d'essai en vue de déterminer la capacité des composants ou des matériels à supporter le transport, le stockage et l'utilisation dans des conditions de forte humidité. L'objet de cette norme est de rechercher l'effet d'une forte humidité à température constante sans condensation sur un spécimen, au cours d'une période prescrite. Elle est applicable aussi bien à des petits matériels ou composants qu'à des matériels volumineux, et peut être appliquée à la fois à des spécimens dissipateurs de chaleur et non dissipateurs de chaleur. Cette deuxième édition annule et remplace la première édition, publiée en 2001, et constitue une révision technique. Cette édition inclut des modifications éditoriales et de mise en page par rapport à l'édition précédente: - L'essai en chambre de la CEI 60068-3-6 est ajouté.

Okoljsko preskušanje - 2-78. del: Preskusi - Preskuševalna omarica: vlažna vročina, ustaljeno stanje

Ta del standarda IEC 60068 določa preskusno metodo za ugotavljanje odpornosti sestavnih delov ali opreme na transport, shranjevanje in uporabo pri visoki vlažnosti. Namen tega standarda je raziskati učinek visoke vlage na vzorcu v določenem časovnem območju, pri stalni temperaturi brez kondenzacije. Velja za manjšo opremo ali sestavne dele in večjo opremo ter ga je mogoče uporabiti pri vzorcih, ki absorbirajo toploto, in vzorcih, ki toplote ne absorbirajo.

General Information

• Status: Published
• Publication Date: 13-Jun-2013
• Withdrawal Date: 02-Dec-2015
• ICS: 19.040 - Environmental testing
• ICS: 29.020 - Electrical engineering in general
• Technical Committee: CLC/SR 104 - Environmental conditions, classification and methods of test
• Drafting Committee: IEC/TC 104 - IEC_TC_104
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 14-Jun-2013
• Completion Date: 14-Jun-2013
• Ref Project: SIST EN 60068-2-78:2013 - Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state

Relations

• Replaces: EN 60068-2-78:2001 - Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state
• Effective Date: 29-Jan-2023
• Replaced By: EN IEC 60068-2-78:2025 - Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state
• Effective Date: 14-Feb-2023

Overview

EN 60068-2-78:2013 (Test Cab: Damp heat, steady state) is a CLC/CENELEC adoption of IEC 60068-2-78:2012 that defines a test method to determine the ability of components and equipment to withstand high humidity at constant temperature without condensation. This second edition supersedes the 2001 version and incorporates the test chamber requirements from IEC 60068-3-6.

The standard applies to small and large equipment, heat-dissipating and non-heat-dissipating specimens, and supports qualification for transportation, storage and use in humid environments.

Key Topics

• Test objective: Evaluate effects of high humidity on materials and assemblies by moisture absorption and vapour diffusion under steady-state conditions.
• Test chamber and measurement: Chambers shall meet IEC 60068-3-6 requirements. Sensors must be located in the working space; condensed water must be drained and not fall on specimens; water conductivity limits and injection points are specified to avoid direct wetting.
• Severity parameters: The standard defines combinations of temperature, relative humidity (RH) and duration as severity criteria. Typical temperature/RH pairs include:
  • 30 ± 2 °C at 93 ± 3 % RH
  • 30 ± 2 °C at 85 ± 3 % RH
  • 40 ± 2 °C at 93 ± 3 % RH
  • 40 ± 2 °C at 85 ± 3 % RH
• Preferred durations: 12 h, 16 h, 24 h; 2 days, 4 days, 10 days, 21 days, 56 days. The test duration is measured from the moment the prescribed conditions are achieved.
• Specimen state and mounting: Tests may be performed with specimens unpacked, powered or unpowered as specified. Mounting and support must not significantly influence heat/humidity exchange unless specified.
• Measurements and recovery: Visual, electrical and mechanical checks are required before and after the test; intermediate measurements may be required by the relevant specification. Recovery procedures and periods follow IEC 60068-1 guidance.

Applications

EN 60068-2-78:2013 is used by manufacturers, test labs and procurement teams for:

• Design verification: Confirm seals, coatings, conformal protection and material choices under sustained humidity.
• Qualification and QA: Establish acceptance criteria for production batches and incoming components.
• Reliability assessment: Evaluate effects of humidity on long-term performance for storage and transport scenarios.
• Vendor and contract testing: Define uniform test conditions for contractual verification of products destined for humid environments.

Related Standards

• IEC 60068-1: Environmental testing - general guidance and procedures referenced for recovery and measurement methods.
• IEC 60068-3-6: Supporting documentation and guidance - confirmation and verification of temperature/humidity chamber performance (introduced into this edition).
• IEC Guide 104: Use for classification as a basic safety publication where applicable.

Practical value: EN 60068-2-78:2013 provides repeatable, standardised damp-heat test methods that help ensure products meet humidity endurance requirements, reduce field failures, and support conformity in design, production and procurement processes.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Umweltprüfungen - Teil 2-78: Prüfungen - Prüfung Cab: Feuchte Wärme, konstantEssais d'environnement - Partie 2-78: Essais - Essai Cab: Chaleur humide, essai continuEnvironmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state19.040Preskušanje v zvezi z okoljemEnvironmental testingICS:Ta slovenski standard je istoveten z:EN 60068-2-78:2013SIST EN 60068-2-78:2013en01-september-2013SIST EN 60068-2-78:2013SLOVENSKI
STANDARDSIST EN 60068-2-78:20021DGRPHãþD

EUROPEAN STANDARD EN 60068-2-78 NORME EUROPÉENNE
EUROPÄISCHE NORM June 2013
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2013 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60068-2-78:2013 E
ICS 19.040; 29.020 Supersedes EN 60068-2-78:2001
English version
Environmental testing -
Part 2-78: Tests -
Test Cab: Damp heat, steady state (IEC 60068-2-78:2012)
Essais d'environnement -
Partie 2-78: Essais -
Essai Cab: Chaleur humide, essai continu (CEI 60068-2-78:2012)
Umgebungseinflüsse -
Teil 2-78: Prüfverfahren -
Prüfung Cab: Feuchte Wärme, konstant (IEC 60068-2-78:2012)
This European Standard was approved by CENELEC on 2012-12-03. 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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Foreword The text of document 104/582/FDIS, future edition 2 of IEC 60068-2-78, prepared by IEC/TC 104 "Environmental conditions, classification, and methods of test" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60068-2-78:2013. The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2013-12-14 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-12-03
This document supersedes EN 60068-2-78:2001.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.
Endorsement notice The text of the International Standard IEC 60068-2-78:2012 was approved by CENELEC as a European Standard without any modification.
- 3 - EN 60068-2-78:2013
Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
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 60068-1 - Environmental testing -
Part 1: General and guidance EN 60068-1 -
IEC 60068-3-6 - Environmental testing -
Part 3-6: Supporting documentation and guidance - Confirmation of the performance of temperature/humidity chambers EN 60068-3-6 -
IEC Guide 104 - The preparation of safety publications and the use of basic safety publications and group safety publications - -
IEC 60068-2-78 Edition 2.0 2012-10 INTERNATIONAL STANDARD NORME INTERNATIONALE Environmental testing –
Part 2-78: Tests – Test Cab: Damp heat, steady state
Essais d’environnement –
Partie 2-78: Essais – Essai Cab: Chaleur humide, essai continu
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE J ICS 19.040; 29.020 PRICE CODE CODE PRIX ISBN 978-2-83220-444-3
BASIC SAFETY PUBLICATION PUBLICATION FONDAMENTALE DE SÉCURITÉ
– 2 – 60068-2-78  IEC:2012 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope and object . 6 2 Normative references . 6 3 Terms and definitions . 6 4 General test procedure . 6
Test chamber and measuring system . 6 4.1 Severity . 7 4.2 Pre-conditioning . 7 4.3 Testing procedure . 7 4.4 Recovery procedure . 8 4.55 Measurements . 8
Initial measurements . 8 5.1 Intermediate measurements . 8 5.2 Final measurements . 8 5.36 Information to be given in the relevant specification. 8 7 Information to be given in the test report . 9
Table 1 – Temperature and relative humidity . 7
60068-2-78  IEC:2012 – 3 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
ENVIRONMENTAL TESTING –
Part 2-78: Tests – Test Cab: Damp heat, steady state
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC o
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