BS EN IEC-60296-2020 pdf download.Fluids for electrotechnical applications — Mineral insulating oils for electrical equipment.
This document provides specifications and test methods for unused and recycled mineral insulating oils (see Clause 3 for definitions). It applies to mineral oil delivered according to the contractual agreement, intended for use in transformers, switchgear and similar electrical equipment in which oil is required for insulation and heat transfer. Both unused oil and recycled oil under the scope of this document have not been used in, nor been in contact with electrical equipment or other equipment not required for manufacture, storage or transport. Unused oils are obtained by refining, modifying and/or blending of petroleum products and other hydrocarbons from virgin feedstock. Recycled oils are produced from oils previously used as mineral insulating oils in electrical equipment that have been subjected to re-refining or reclaiming (regeneration) by processes employed offsite. Such oils will have originally been supplied in compliance with a recognized unused mineral insulating oil specification. This document does not differentiate between the methods used to recycle mineral insulating oil. Oils treated on-site (see IEC 60422) are not within the scope of this document. Oils with and without additives are both within the scope of this document. This document does not apply to mineral insulating oils used as impregnating medium in cables or capacitors.
2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 601 56, Insulating liquids – Determination of the breakdown voltage at power frequency – Test method
IEC 60247, Insulating liquids – Measurement of relative permittivity, dielectric dissipation factor (tan δ) and d.c. resistivity
IEC 60422:201 3, Mineral insulating oils in electrical equipment – Supervision and maintenance guidance
IEC 60475, Method of sampling liquid dielectrics
IEC 60567:201 1 , Oil-filled electrical equipment – Sampling of gases and analysis of free and dissolved gases – Guidance
IEC 60628:1 985, Gassing of insulating liquids under electrical stress and ionization
IEC 60666:201 0, Detection and determination of specified additives in mineral insulating oils
IEC 6081 4, Insulating liquids – Oil-impregnated paper and pressboard – Determination of water by automatic coulometric Karl Fischer titration
IEC 60970, Insulating liquids – Methods for counting and sizing particles
IEC 61 1 25:201 8, Insulating liquids – Test methods for oxidation stability – Test method for evaluating the oxidation stability of insulating liquids in the delivered state
IEC 61 1 98, Mineral insulating oils – Methods for the determination of 2-furfural and related compounds
IEC 61 61 9, Insulating liquids – Contamination by polychlorinated biphenyls (PCBs) – Method of determination by capillary column gas chromatography
IEC 61 620, Insulating liquids – Determination of the dielectric dissipation factor by measurement of the conductance and capacitance – Test method
IEC 61 868, Mineral insulating oils – Determination of kinematic viscosity at very low temperatures
IEC 62021 -1 , Insulating liquids – Determination of acidity – Part 1: Automatic potentiometric titration
IEC 62021 -2, Insulating liquids – Determination of acidity – Part 2: Colourimetric titration
IEC 62535:2008, Insulating liquids – Test method for detection of potentially corrosive sulphur in used and unused insulating oils
IEC 62697-1 , Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids – Part 1: Test method for quantitative determination of dibenzyldisulfide (DBDS)
IEC 62961 , Insulating liquids – Test methods for the determination of interfacial tension of insulating liquids – Determination with the ring method
ISO 2049, Petroleum products, Determination of colour (ASTM scale)
ISO 271 9, Determination of flash point – Pensky-Martens closed cup method.BS EN IEC-60296 pdf download.