EN 61234-2:1998
(Main)Electrical insulating materials - Methods of test for the hydrolytic stability - Part 2: Moulded thermosets
Electrical insulating materials - Methods of test for the hydrolytic stability - Part 2: Moulded thermosets
Describes the test method for determination of hydrolytic stability of moulded thermosets made of room temperature or oven-curing reaction resins when subjected to simultaneous influence of water and high temperature. With this test method, irreversible change of mechanical and electrical properties is measured, but no mechanical stress is imposed on the test specimens.
Elektroisolierstoffe - Prüfverfahren für die Hydrolysebeständigkeit - Teil 2: Gehärtete Formstoffe
Matériaux isolants électriques - Méthodes d'essai concernant la stabilité hydrolytique - Partie 2: Matériaux thermodurcissables moulés
Décrit la méthode d'essai destinée à la détermination de la stabilité hydrolytique des matériaux thermodurcissables moulés, réalisés à partir de résines réagissant en durcissant à la temperature ambiente ou à chaud, lorsqu'elles sont soumises à l'influence simultanée de l'eau et d'une temperature élevée. Avec cette méthode, on mesure les modifications irréversibles des propriétés mécaniques et électriques, sans imposer de contrainte mécanique sur les éprouvettes.
Electrical insulating materials - Methods of test for the hydrolytic stability - Part 2: Moulded thermosets (IEC61234-2:1997)
General Information
Overview
EN 61234-2:1998 (IEC 61234-2:1997) specifies a test method for determination of the hydrolytic stability of moulded thermosets used as electrical insulating materials. The standard applies to moulded thermosetting materials made from room-temperature or oven-curing reaction resins and describes how to expose specimens to the simultaneous influence of water and high temperature. The method quantifies irreversible changes in mechanical and electrical properties caused by hydrolysis, without imposing external mechanical stress on the test specimens. This document is adopted nationally (e.g., SIST EN 61234-2:2001).
Key topics and requirements
- Scope: Moulded thermosets from reaction resins cured at room temperature or in ovens; focused on hydrolytic degradation under combined water and heat.
- Measured outcomes: Irreversible changes in mechanical properties and electrical properties following exposure to hydrolytic conditions.
- Test conditions: Exposure to water and elevated temperature simultaneously (standard defines the detailed procedure and specimen handling - see full text for parameters).
- Specimen considerations: Moulded thermoset samples prepared from the material under test; no external mechanical stress applied during exposure.
- Reporting: Results presented as changes in specified electrical and mechanical characteristics to assess hydrolysis resistance.
Applications
EN 61234-2 is used to evaluate the hydrolytic stability and long-term performance of insulating thermoset materials in humid and high-temperature environments. Typical practical applications include:
- Material selection for electrical components exposed to moisture and heat (e.g., transformers, motors, switchgear, connectors).
- Quality control and batch verification in manufacturing of moulded thermosets.
- R&D screening of new resin formulations for improved hydrolysis resistance.
- Reliability assessments for electrical equipment intended for tropical or humid climates.
- Supporting compliance and documentation for product certification and safety cases.
Who should use this standard
- Material scientists and polymer engineers developing moulded thermosets
- Test laboratories performing environmental aging and electrical insulation tests
- Product designers and reliability engineers for electrical equipment
- Quality assurance and compliance teams ensuring conformity with European/National standards
Related standards
- IEC 61234-2:1997 (original international reference)
- National adoptions such as SIST EN 61234-2:2001
- Other parts of the EN/IEC series addressing hydrolytic stability and tests for different classes of insulating materials
Keywords: hydrolytic stability, moulded thermosets, electrical insulating materials, EN 61234-2, hydrolysis resistance, test method, IEC 61234-2, mechanical and electrical properties.
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2001
Electrical insulating materials - Methods of test for the hydrolytic stability - Part 2:
Moulded thermosets (IEC61234-2:1997)
Electrical insulating materials - Methods of test for the hydrolytic stability -- Part 2:
Moulded thermosets
Elektroisolierstoffe - Prüfverfahren für die Hydrolysebeständigkeit -- Teil 2: Gehärtete
Formstoffe
Matériaux isolants électriques - Méthodes d'essai concernant la stabilité hydrolytique --
Partie 2: Matériaux thermodurcissables moulés
Ta slovenski standard je istoveten z: EN 61234-2:1998
ICS:
29.035.01 Izolacijski materiali na Insulating materials in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
SIST EN 61234-2:20
...
Frequently Asked Questions
EN 61234-2:1998 is a standard published by CLC. Its full title is "Electrical insulating materials - Methods of test for the hydrolytic stability - Part 2: Moulded thermosets". This standard covers: Describes the test method for determination of hydrolytic stability of moulded thermosets made of room temperature or oven-curing reaction resins when subjected to simultaneous influence of water and high temperature. With this test method, irreversible change of mechanical and electrical properties is measured, but no mechanical stress is imposed on the test specimens.
Describes the test method for determination of hydrolytic stability of moulded thermosets made of room temperature or oven-curing reaction resins when subjected to simultaneous influence of water and high temperature. With this test method, irreversible change of mechanical and electrical properties is measured, but no mechanical stress is imposed on the test specimens.
EN 61234-2:1998 is classified under the following ICS (International Classification for Standards) categories: 29.035.01 - Insulating materials in general. The ICS classification helps identify the subject area and facilitates finding related standards.
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