IEC 61203:2025

Synthetic organic esters - Guidelines for maintenance and use in electrical equipment

IEC 61039:2025

Classification of insulating liquids

IEC 61039:2025 CMV

Classification of insulating liquids

IEC 60422:2024

Mineral insulating oils in electrical equipment - Supervision and maintenance guidance

IEC 60567:2023

Oil-filled electrical equipment - Sampling of free gases and analysis of free and dissolved gases in mineral oils and other insulating liquids - Guidance

IEC 60567:2023 CMV

Oil-filled electrical equipment - Sampling of free gases and analysis of free and dissolved gases in mineral oils and other insulating liquids - Guidance

IEC 60867:2022

Insulating liquids - Specifications for unused liquids based on synthetic aromatic hydrocarbons

IEC 60475:2022

Method of sampling insulating liquids

IEC 60475:2022 CMV

Method of sampling insulating liquids

IEC TR 63025:2021

Insulating liquids - Quantitative determination of methanol and ethanol in insulating liquids

IEC 62975:2021

Natural esters - Guidelines for maintenance and use in electrical equipment

IEC 60296:2020

Fluids for electrotechnical applications – Mineral insulating oils for electrical equipment

IEC 63012:2019

Insulating liquids - Unused modified or blended esters for electrotechnical applications

IEC 62961:2018

Insulating liquids - Test methods for the determination of interfacial tension of insulating liquids - Determination with the ring method

IEC TR 62697-3:2018

Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids - Part 3: Test method for quantitative determination of elemental sulfur

IEC TR 62697-2:2018

Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids - Part 2: Test method for quantitative determination of total corrosive sulfur (TCS)

IEC 61125:2018

Insulating liquids - Test methods for oxidation stability - Test method for evaluating the oxidation stability of insulating liquids in the delivered state

IEC 60836:2015

Specifications for unused silicone insulating liquids for electrotechnical purposes

IEC TR 62874:2015

Guidance on the interpretation of carbon dioxide and 2-furfuraldehyde as markers of paper thermal degradation in insulating mineral oil

IEC 62021-3:2014

Insulating liquids - Determination of acidity - Part 3: Test methods for non-mineral insulating oils