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 60156:2025 RLV

Insulating liquids - Determination of the breakdown voltage at power frequency - Test method

IEC 60156:2025

Insulating liquids - Determination of the breakdown voltage at power frequency - Test method

IEC 63360:2025

Fluids for electrotechnical application - Specification of gases alternative to SF₆ to be used in electrical power equipment

IEC 62770:2024

Fluids for electrotechnical applications - Unused natural esters for transformers and similar electrical equipment

IEC 62770:2024 CMV

Fluids for electrotechnical applications - Unused natural esters for transformers and similar electrical equipment

IEC 60422:2024

Mineral insulating oils in electrical equipment - Supervision and maintenance guidance

IEC 63177:2024

Test methods for compatibility of construction materials with electrical insulating liquids

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 60480:2019

Specifications for the re-use of sulphur hexafluoride (SF₆) and its mixtures in electrical equipment