BS EN IEC 60296:2020
$189.07
Fluids for electrotechnical applications. Mineral insulating oils for electrical equipment
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 48 |
IEC 60296:2020 provides specifications and test methods for unused and recycled mineral insulating oils. 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. This fifth edition cancels and replaces the fourth edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – This International Standard is applicable to specifications and test methods for unused and recycled mineral insulating oils in the delivered state. – Within the transformer insulating oils, two groups, Type A and Type B, are defined, based on their performance. – A new method for stray gassing under thermo-oxidative stress of mineral insulating oils, which has been tested in a joint round robin test (RRT) between CIGRE D1 and IEC technical committee 10, has been included.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 5 | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications |
| 9 | English CONTENTS |
| 12 | FOREWORD |
| 14 | INTRODUCTION |
| 15 | 1 Scope 2 Normative references |
| 17 | 3 Terms and definitions |
| 19 | 4 Properties of oil 4.1 General 4.2 Functional properties 4.3 Production and stability |
| 20 | 4.4 Performance 4.5 Health, safety and environment (HSE) properties 5 Classification, labelling, identification, general delivery requirements and sampling 5.1 Classification and labelling 5.1.1 Classes 5.1.2 Antioxidant (oxidation inhibitor) content |
| 21 | 5.1.3 Lowest cold start energizing temperature (LCSET) 5.1.4 Labelling and ordering designation 5.2 Requirements 5.3 Miscibility and compatibility Tables Table 1 – Meaning of the identifying letter codes in the ordering designation of mineral oil according to IEC 60296 |
| 22 | 5.4 Identification and general delivery requirements 5.5 Sampling 6 Properties, their significance and test methods 6.1 Viscosity |
| 23 | 6.2 Pour point 6.3 Water content 6.4 Breakdown voltage 6.5 Density Table 2 – Maximum viscosity and pour point of mineral insulating oil |
| 24 | 6.6 Dielectric dissipation factor (DDF) 6.7 Colour and appearance 6.8 Acidity 6.9 Interfacial tension (IFT) 6.10 Sulphur content 6.11 Corrosive and potentially corrosive sulphur |
| 25 | 6.12 Additives (see 3.3) 6.12.1 General 6.12.2 Antioxidants (see 3.4) 6.12.3 Metal passivators 6.12.4 Pour point depressants |
| 26 | 6.13 Oxidation stability 6.14 Flash point 6.15 Polycyclic aromatics (PCAs) and polyaromatic hydrocarbons (PAHs) 6.16 Polychlorinated biphenyl content (PCBs) 6.17 2-furfural (2-FAL) and related compounds content |
| 27 | 6.18 DBDS content 6.19 Stray gassing under thermo-oxidative stress |
| 28 | Table 3 – General specifications, Type A (fully inhibited high grade oils) |
| 30 | Table 4 – General specifications, Type B (uninhibited and inhibited standard grade oils) |
| 31 | 7 Additional properties 7.1 General 7.2 Electrostatic charging tendency (ECT) 7.3 Gassing tendency |
| 32 | 7.4 Thermal properties 7.5 Properties connected with consistency (aromatic content, distribution of PAHs, refractive index) 7.6 Lubricating properties 7.7 Particle content 7.8 Foaming 7.9 Transformer oil test equivalents |
| 33 | Annexes Annex A (normative) Method for stray gassing under thermo-oxidative stress A.1 Overview of the method A.2 Required materials A.3 Pretreatment of syringes |
| 34 | A.4 Procedure A: stray gassing under oxidative conditions (high oxygen content) A.4.1 Pretreatment of mineral oil A.4.2 Filling syringes with mineral oil A.4.3 Incubation procedure A.4.4 Dissolved gas analysis A.5 Procedure B: stray gassing under inert conditions (low oxygen content) Figures Figure A.1 – Syringes with and without copper |
| 35 | A.6 Reporting A.6.1 Test report A.6.2 Evaluation of the stray gassing behaviour of the oil A.7 Precision data A.7.1 General A.7.2 Repeatability A.7.3 Reproducibility |
| 36 | A.8 Results of the RRT A.8.1 General A.8.2 Stray gassing pattern 1 Figure A.2 – Stray gassing pattern 1 |
| 37 | A.8.3 Stray gassing pattern 2 Figure A.3 – Stray gassing pattern 2 |
| 38 | A.8.4 Stray gassing pattern 3 Figure A.4 – Stray gassing pattern 3 |
| 39 | A.8.5 Stray gassing pattern 4 Figure A.5 – Stray gassing pattern 4 |
| 40 | Annex B (informative) Potentially corrosive sulphur B.1 Mechanism of copper sulphide deposition B.2 Corrosive sulphur compounds in oil B.3 Detection of corrosive sulphur compounds in oils containing passivators B.3.1 General |
| 42 | Annex C (informative) Contamination of oils with silicone |
| 43 | Annex D (informative) Transformer oil test equivalents Table D.1 – Some transformer oil test equivalents |
| 45 | Bibliography |
