BS EN IEC 60296:2020 pdf download – Fluids for electrotechnical applications — Mineral insulating oils for electrical equipment.
ASTM D971 , Standard Test Method for Interfacial Tension of Oil Against Water by the Ring Method ASTM D1 500, Standard Test Method for ASTM Color of Petroleum Products (ASTM Color Scale) ASTM D6591 , Standard Test Method for Determination of Aromatic Hydrocarbon Types in Middle Distillates – High Performance Liquid Chromatography Method with Refractive Index Detection ASTM D7042, Standard Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity) ASTM D7896, Standard Test Method for Thermal Conductivity, Thermal Diffusivity and Volumetric Heat Capacity of Engine Coolants and Related Fluids by Transient Hot Wire Liquid Thermal Conductivity Method DIN 51 353, Testing of insulating oils; detection of corrosive sulphur; Silver strip test IP 346, Determination of polycyclic aromatics in unused lubricating base oils and asphaltene free petroleum fractions – Dimethyl sulfoxide extraction refractive index method 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp 3.1 mineral insulating oil insulating liquid for transformers and similar electrical equipment (e.g. switchgear, tap- changers), derived from petroleum products and/or other hydrocarbons Note 1 to entry: Mineral insulating oils include unused (3.8) and recycled (3.9) mineral insulating oils. [SOURCE: IEC 60050-21 2:201 0, 21 2-1 7-02, modified – “for transformers and similar electrical equipment, (e.g. switchgear, tap-changers)” added, “crudes” replaced with “petroleum products and/or other hydrocarbons” and note to entry added.]
3.4 antioxidant oxidation inhibitor additive incorporated in mineral insulating oil that improves oxidation stability Note 1 to entry: DBPC = 2,6-di-tert-butyl-para-cresol; DBP = 2,6-di-tert-butyl-phenol. Note 2 to entry: For the purposes of this document, the oxidation inhibitor is a synthetic chemical substance of the phenolic type, such as DBPC and DBP described in IEC 60666. [SOURCE: IEC 60050-21 2:201 0, 21 2-1 7-1 4, modified – “an insulating material to reduce or delay degradation by oxidation” replaced with “mineral insulating oil that improves oxidation stability” and note replaced with notes to entry.] 3.4.1 other antioxidant additive antioxidant additive of the sulphur-, amine- or phosphorous- type Note 1 to entry: Sulphur-type additives do not include dibenzyldisulphide (DBDS) or other potentially corrosive sulphur compounds. 3.4.2 passivator additive used primarily as corrosion deactivator and sometimes as electrostatic charging depressant Note 1 to entry: It can also improve the oxidation stability, by reducing the catalytic effect of copper on oxidation of the oil 3.5 uninhibited oil (U) mineral insulating oil containing no oxidation inhibitor or other antioxidant additives Note 1 to entry: No inhibitor means that the total inhibitor content is below the detection limit of 0,01 % indicated in IEC 60666. [SOURCE: IEC 60050-21 2:201 0, 21 2-1 7-1 9, modified – In the term, deletion of “insulating”, in the definition “antioxidant, but which may contain other additives” replaced with “oxidation inhibitor or other antioxidant additives” and note replaced with the note to entry.]
3.9 recycled mineral insulating oil (R) mineral insulating oil previously used in electrical equipment that has been subjected to re- refining or reclaiming (regeneration) after removal from the electrical equipment Note 1 to entry: Any blend of unused and recycled oils is to be considered as recycled. Note 2 to entry: The characteristics of recycled oil are heavily dependent on the oil from which it was recycled, the original refining technique, the service history and the type of recycling process. Note 3 to entry: Natural or added antioxidants originally present in the oil might have been depleted in service or removed by the recycling process. The oxidation stability therefore needs to be restored/improved and is usually achieved by the addition of an oxidation inhibitor. Note 4 to entry: Such recycled oils are often produced from mixtures of mineral insulating oils of different origins. The manufacturer and supplier of recycled mineral insulating oil shall take reasonable precautions to ensure that there is no contamination with polychlorinated biphenyls or terphenyls (PCB, PCT) or other contaminants. 3.1 0 reclaimed mineral insulating oil regenerated mineral insulating oil recycled mineral insulating oil used in electrical equipment, which has been subjected after removal from the electrical equipment to chemical and physical processing to reduce soluble and insoluble contaminants 3.1 1 re-refined mineral insulating oil recycled mineral insulating oil used in electrical equipment that has been removed from service and subjected to a process similar to that used for the production of unused mineral insulating oil from virgin feedstock, in order to reduce the level of undesired compounds Note 1 to entry: Such re-refined oils are often produced from mixtures of mineral insulating oils of different origins including processes such as distillation and hydrogenation.