IEC 62631-3-4-ed.1.0

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Other standards related to electricity and magnetismInsulating materials in general

Annotation of standard text IEC 62631-3-4-ed.1.0 :

IEC 62631-3-4:2019 covers procedures for the determination of insulation resistance and volume resistivity of insulating materials by applying DC-voltage and temperatures up to 800 °C. The typical application materials include high temperature mica plate and alumina ceramics. This edition of IEC 62631-3-4 cancels and replaces IEC 60345 “Method of test for electrical resistance and resistivity of insulating materials at elevated temperatures”, published in 1971. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 60345:

1. The revised standard becomes part of the series IEC 62631-3-x. Title of the standard is changed and adapted to the series as Part 3-4.
2. Clauses 2 "Normative references", 3 "Terms and definitions", and 4 "Significance" are added.
3. Subclauses 5.2 "Power supply, Voltage", 5.3.1.2 "Number of test specimens" and 5.3.1.3 "Conditioning and pre-treatment of test specimens" are added.
4. In 5.3.5 "Special precautions during measurements", errors analysis in the measurement of current are modified, and aligned with IEC 62631-3-1.
5. In 6.2 "Increasing the temperature by steps (method B)", the method for more than one specimen is removed.
6. The standard atmospheric conditions for testing and conditioning, especially the temperature, are replaced according to IEC 60212.
7. The circuit diagram of test apparatus is modified, and the structure diagram and pictures of test apparatus are added in Annex A.
8. The orders of part clauses are adjusted.

LIEC 62631-3-4:2019 couvre les procedures de determination de la resistance disolement et de la resistivite transversale des materiaux isolants en appliquant une tension continue et des temperatures jusqua 800°C. Les materiaux dapplication classiques incluent les plaques de mica et les ceramiques dalumine haute temperature. La presente edition de lIEC 62631-3-4 annule et remplace lIEC 60345 "Methode dessai pour la resistance disolement et la resistivite transversale des materiaux isolants a des temperatures elevees", parue en 1971. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a lIEC 60345:

1. La norme revisee devient une partie de la serie IEC 62631-3-x. Le titre de la norme a ete modifie et adapte a la serie en tant que Partie 3-4.
2. LArticle 2 "References normatives", lArticle 3 "Termes et definitions" et lArticle 4 "Signification" ont ete ajoutes.
3. Le Paragraphe 5.2 "Alimentation et tensions dessai", le Paragraphe 5.3.1.2 "Nombre deprouvettes dessai" et le Paragraphe 5.3.1.3 "Conditionnement et pretraitement de leprouvette dessai" ont ete ajoutes.
4. En 5.3.5 "Precautions particulieres a prendre pendant les mesurages", les erreurs danalyse dans le mesurage du courant sont modifiees et alignees sur lIEC 62631-3-1.
5. En 6.2 "Elevation de la temperature par echelons (methode B)", la methode pour plusieurs eprouvettes a ete retiree.
6. Les conditions atmospheriques normales pour lessai et le conditionnement (en particulier la temperature) ont ete remplacees conformement a lIEC 60212.
7. Le schema des circuits de lappareillage dessai a ete modifie, et le schema structurel et les images de lappareillage dessai ont ete ajoutes a lAnnexe A.
8. Lordre des articles de la partie a ete ajuste.