IEC 60068-2-14:2009

Name: IEC 60068-2-14:2009 — Environmental testing - Part 2-14: Tests - Test N: Change of temperature
SKU: IEC 60068-2-14:2009
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Environmental testing - Part 2-14: Tests - Test N: Change of temperature

Название (английский):

IEC 60068-2-14:2009

Environmental testing - Part 2-14: Tests - Test N: Change of temperature

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 37
Дата публикации:: 12 января 2009 г.
Издание:: IEC IS 60068 edition 6 version 1
ICS:: 19.040

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Описание (английский):

IEC 60068-2-14:2009 provides a test to determine the ability of components, equipment or other articles to withstand rapid changes of ambient temperature. The exposure times adequate to accomplish this will depend upon the nature of the specimen. The major changes with regard to the previous edition concern: - merging of the previous version of IEC 60068-2-14 with IEC 60068-2-33: Guidance on change of temperature tests; - updating of the figures, changes to some of the wording and editorial corrections made for clarification.

Abstract

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Overview

IEC 60068-2-14:2009 is an international standard published by the International Electrotechnical Commission (IEC) focused on environmental testing, specifically addressing Test N: Change of Temperature. This test evaluates the ability of components, equipment, or other articles to withstand rapid changes in ambient temperature. It is essential for ensuring device reliability under variable environmental conditions that occur during transportation, storage, and operational use. The 2009 edition merges previous versions with guidance from IEC 60068-2-33, updates test figures, and clarifies terminology to enhance the standard’s practical application.

Key Topics

Test Scope: Designed to assess the resilience of electrical and electronic equipment when subjected to rapid temperature fluctuations rather than prolonged exposure to fixed high or low temperatures.

Test Types: The standard defines three main test methods to simulate different change of temperature conditions:

Test Na: Rapid change with prescribed transfer time protocol.
Test Nb: Controlled rate of temperature change.
Test Nc: Two-fluid bath method for very rapid temperature transitions.

Test Parameters: Criteria include the high and low temperature limits, exposure times, temperature change rates, number of cycles, and heat transfer dynamics in the specimen.

Applicability: Focuses on field conditions such as equipment transitioning from indoor warm environments to cold outdoor air, cooling due to rainfall or water immersion, or temperature gradients near high wattage components inside devices.

Recovery and Measurements: Guidance is given on initial and final measurements pre- and post-test to assess the impact of temperature cycling on device functionality and integrity.

Applications

IEC 60068-2-14:2009 is crucial for manufacturers and testers of:

Electronic components and assemblies to ensure functionality despite thermal shocks during shipping or operational temperature shifts.

Telecommunication equipment exposed to outdoor environments or rapid temperature changes.

Automotive electronics, where parts face frequent and rapid temperature variations due to engine heat and external weather.

Military and aerospace hardware that must withstand extreme and rapid ambient temperature changes including altitude-related thermal stresses.

Consumer electronics to validate durability claims against sudden temperature shifts, prolonging product life and enhancing user safety. These tests help improve product design, reduce failures, and comply with international quality requirements, ensuring products meet end-user expectations worldwide.

Related Standards

For comprehensive environmental evaluation, IEC 60068-2-14:2009 is used alongside other related IEC environmental testing standards, including:

IEC 60068-2-1: Cold test focusing on low temperature endurance.

IEC 60068-2-2: Dry heat test focusing on high temperature endurance.

IEC 60068-2-17: Sealing tests related to environmental ingress protection.

IEC 60068 series: Broader collection covering diverse environmental stress tests including humidity, vibration, and mechanical shocks.

IEC Guide 104: Guidelines on preparation and application of basic safety publications. Together, these standards form a robust framework for validating the environmental robustness of electrotechnical products globally, supporting safe and reliable operation in diverse conditions.

Leveraging IEC 60068-2-14:2009 for environmental testing ensures that electrical and electronic products maintain their integrity and performance despite rapid environmental temperature changes. This standard promotes consistent testing procedures, measurable resilience outcomes, and improved quality assurance across industries.

IEC 60068-2-14:2009

Abstract

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Overview

Key Topics

Applications

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