IEC 60376:2018 pdf download

IEC 60376:2018 pdf download.Specification of technical grade sulphur hexafluoride (SF 6 ) and complementary gases to be used in its mixtures for use in electrical equipment
1 Scope
This document defines the quality for technical grade sulphur hexafluoride (SF 6 ) and complementary gases such as nitrogen (N 2 ) and carbon tetra-fluoride (CF 4 ), for use in electrical equipment. Detection techniques, covering both laboratory and in-situ portable instrumentation, applicable to the analysis of SF 6 , N 2 and CF 4 gases prior to the introduction of these gases into the electrical equipment are also described in this document. This document provides some information on sulphur hexafluoride in Annex A and on the environmental effects of SF 6 in Annex B. Information about SF 6 by-products and the procedure for evaluating the potential effects of SF 6 by-products on human health are covered by IEC 60480, their handling and disposal being carried out according to international and local regulations with regard to the impact on the environment. Handling of SF 6 and its mixtures is covered by IEC 62271 -4. Procedures to determine SF 6 leakages are described in IEC 60068-2-1 7. For the purposes of this document, the complementary gases used in SF 6 mixtures will be limited to N 2 or CF 4 .
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 60050-21 2, International Electrotechnical Vocabulary – Part 212: Electrical insulating solids, liquids and gases (available at http://www.electropedia.org) IEC 60050-441 , International Electrotechnical Vocabulary – Part 441: Switchgear, controlgear and fuses (available at http://www.electropedia.org) IEC 60050-826, International Electrotechnical Vocabulary – Part 826: Electrical installations (available at http://www.electropedia.org) IEC 60480, Guidelines for the checking and treatment of sulphur hexafluoride (SF 6 ) taken from electrical equipment and specification for its re-use IEC 62271 -4, High-voltage switchgear and controlgear – Part 4: Handling procedures for sulphur hexafluoride (SF 6 ) and its mixtures
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-21 2, IEC 60050-441 and IEC 60050-826 and the following 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 NOTE Some of the more important terms are listed here for easy reference. 3.1 .1 electrical equipment item used for such purposes as generation, conversion, transmission, distribution or utilization of electrical energy, such as electric machines, transformers, switchgear and controlgear, measuring instruments, protective devices, wiring systems, current-using equipment, insulated bushings, surge arresters [SOURCE: IEC 60050-826:2004, 826-1 6-01 , modified – “insulated bushings, surge arresters” has been added.] 3.1 .2 technical grade SF 6 SF 6 gas having a very low level of contaminants in accordance with IEC 60376:201 8, Table 1 3.1 .3 SF 6 mixture gas mixture formed by SF 6 and a complementary gas, typically N 2 or CF 4 3.1 .4 container vessel (cylinder) suitable for the containment of pressurized gases either in gaseous or liquid phase, according to local and/or international safety and transportation regulations 3.1 .5 contaminant foreign substance or material in an insulating liquid or gas which usually has a deleterious effect on one or more properties [SOURCE: IEC 60050-21 2:201 0, 21 2-1 7-27, modified – “solid” has been removed.]