IEC 61039 Ed. 3.0 b:2025

Classification of insulating liquids

standard by International Electrotechnical Commission , 02/01/2025

Publisher: IEC

File Format: PDF

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This document establishes the detailed classification of the N family (insulating liquids) that belongs to class L (lubricants, industrial oils and related products) in accordance with ISO 8681 and ISO 6743-99, affecting product categories that include products derived from petroleum processing, synthetic chemical products and synthetic and natural esters.

This document applies to unused liquids. For liquids in service, additional testing can be required to ensure compliance with this document.

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