SIST EN 60068-2-74:2001

Environmental testing -- Part 2: Tests - Test Xc: Fluid contamination

Gives a method of test which provides a standard procedure to determine the ability of components, equipments or their constituent materials to withstand accidental contact with fluids, without being unacceptably affected. The fluids listed are representative of those commonly encountered in operational applications. It is not intended that a specimen should be exposed to all, or even any of them. Nor is the list intended to be complete; fluids not listed and for which a test is appropriate should be included in the relevant specification. Guidance is given in Annex A on the choice of test fluids, specimens and severities. These tests are not intended to demonstrate the suitability of components or equipments to perform in continuous contact with a fluid, e.g. an immersed fuel pump. Nor are they a test to demonstrate immunity from electrolytic corrosion.

Umweltprüfungen -- Teil 2: Prüfverfahren - Prüfung Xc: Verunreinigung durch Flüssigkeiten

Essais d'environnement -- Partie 2: Essais - Essai Xc: Contamination par des fluides

Donne une méthode d'essai qui fournit une procédure normalisée pour déterminer l'aptitude des composants , des équipements et des matériaux qui les composent à résister à un contact accidentel avec des fluides sans être affectés de manière inacceptable. Les fluides mentionnés sont représentatifs de ceux que l'on trouve couramment dans les applications opérationnelles. Il n'est pas prévu qu'un spécimen soit forcément exposé à tous ces fluides ou même à l'un d'entre eux. De même, la liste des fluides ne se veut pas exhaustive, il est recommandé d'inclure dans la spécification particulière les fluides qui n'y figurent pas et pour lesquels un essai est approprié. Un guide est fourni à l'annexe A pour le choix des fluides d'essai, des spécimens et des sévérités. Ces essais ne sont pas destinés à démontrer que des composants ou équipements sont adaptés à un fonctionnement en contact continu avec un fluide, par exemple des pompes de carburant immergées. Ces essais ne sont pas non plus destinés à démontrer l'immunité à la corrosion électrolytique.

Environmental testing - Part 2: Tests - Test Xc: Fluid contamination

General Information

• Status: Published
• Publication Date: 31-Aug-2001
• ICS: 19.040 - Environmental testing
• Technical Committee: ETC - Electrotechnical technical committe
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Sep-2001
• Due Date: 01-Sep-2001
• Completion Date: 01-Sep-2001
• Ref Project: EN 60068-2-74:1999 - Environmental testing - Part 2: Tests - Test Xc: Fluid contamination

Relations

• Amended By: SIST EN 60068-2-74:2001/A1:2018 - Environmental testing - Part 2: Tests - Test Xc: Fluid contamination (IEC 60068-2-74:1999/A1:2018)
• Effective Date: 20-Sep-2016

Overview

EN 60068-2-74:1999 (Test Xc: Fluid contamination) is a CLC standard that defines a standardized test method to assess the ability of components, equipment or constituent materials to withstand accidental contact with fluids commonly encountered in operational environments. The procedure is intended to determine whether such fluid exposure produces unacceptable effects on the specimen. The standard is part of the EN 60068 environmental testing series and includes guidance (Annex A) on choosing test fluids, specimens and severities.

Key topics and requirements

• Purpose: Provide a repeatable method to evaluate contamination effects from accidental fluid contact on electronic and electromechanical items.
• Representative fluids: A list of typical fluids is provided as examples; the list is not exhaustive and specimens are not required to be tested with every fluid listed.
• Selection guidance: Annex A gives advice on selecting appropriate test fluids, specimen types and severity levels relevant to the intended application.
• Test scope limits: Tests are not intended to verify suitability for continuous immersion (for example, permanently immersed pumps) or to demonstrate immunity to electrolytic corrosion.
• Outcome focus: The standard is used to determine whether fluid exposure causes unacceptable functional, safety or reliability degradation of the specimen.

Applications

EN 60068-2-74:1999 is applicable wherever accidental fluid contamination is a realistic risk. Typical practical uses include:

• Defining qualification tests for components, assemblies and finished products subject to occasional fluid exposure.
• Specifying test requirements in procurement and product specifications to ensure minimum robustness against spills, splashes or leaks.
• Guiding selection of representative test fluids and severities during product development and environmental qualification.
• Supporting failure analysis and corrective action when incidents involve fluid contamination.

Who uses it:

• Design and test engineers for electronics and electromechanical equipment
• Quality assurance and reliability teams creating environmental test plans
• Third‑party environmental testing laboratories and certification bodies
• Procurement/specification authors requiring defined contamination tests

Related standards

• Part of the EN 60068 environmental testing series; users commonly reference other EN 60068 parts for complementary environmental test methods (vibration, shock, humidity, etc.).
• For continuous fluid immersion or corrosion-specific testing, refer to the appropriate immersion or corrosion standards specified in product requirements (not covered by Test Xc).

Keywords: EN 60068-2-74, Test Xc, fluid contamination, environmental testing, accidental fluid contact, Annex A, component qualification, contamination testing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2001
Environmental testing - Part 2: Tests - Test Xc: Fluid contamination
Environmental testing -- Part 2: Tests - Test Xc: Fluid contamination
Umweltprüfungen -- Teil 2: Prüfverfahren - Prüfung Xc: Verunreinigung durch
Flüssigkeiten
Essais d'environnement -- Partie 2: Essais - Essai Xc: Contamination par des fluides
Ta slovenski standard je istoveten z: EN 60068-2-74:1999
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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