This document specifies the technical requirements for the structure, mechanical performance, electrical performance, and other technical requirements of plugs, sockets, and couplers with arc-shaped contacts. This document is applicable to plugs, sockets, connectors, and appliance input sockets (hereinafter referred to as electrical accessories) with standard structure arc-shaped contacts, with a rated working voltage not exceeding 600 V, 50 Hz, or 60 Hz a.c., and a rated current of 20 A and 30 A, mainly used for commercial purposes, indoor use, and in environments where there is little water present. This document is applicable to electrical accessories used when the ambient temperature is usually within the range of -25 ℃ to+40 ℃. These electrical accessories are intended to be connected only to copper or copper alloy cables. The requirement for interchangeability is only defined for electrical accessories with a protection level of IP20. Note: The basic conditions for indoor use are based on the limitations of IEC 60364-5-51:2005 Table T51A and ADI. Sockets or appliance input sockets installed in or fixed to electrical equipment are within the scope of this document. 2 Normative References The content of the following documents constitutes an essential clause of this document through normative references in the text. Among them, for dated references, only the version corresponding to that date is applicable to this document; For undated references, the latest version (including all modification orders) applies to this document. GB/T 3956 Conductors of Cables (GB/T 3956-2008, IEC 60228; 2004, IDT) GB/T 4208 Degrees of Protection Provided by Enclosures (IP Code) (GB/T 4208-2017. IEC 60529; 2013, IDT) GB/T 5013.4 Rubber Insulated Cables with Rated Voltages of 450/750 V and Below - Part 4: Flexible Wires and Cables (GB/T 5013.4-2008, IEC 60245-4: 2004, 1DT) GB/T 5023 (All Parts) PVC Insulated Cables with Rated Voltages of 450/750 V and Below [IEC 60227 (All Parts)] GB/T 5169.11 Fire Hazard Testing for Electrical and Electronic Products - Part 11; Glow Wire/Glow Wire Basic Test Methods - Glow Wire Flammability Test Method for Finished Products (GWEPT) (GB/T 5169.11-2017, IEC 60695-2-11:2014, IIDT) GB/T 5465.1-2009 Graphical Symbols for Electrical Equipment - Part 1: Overview and Classification (IEC 60417 Database; 2007-01, MOD) GB/T 9797 Metal Coatings, Nickel+Chromium and Copper+Nickel+Chromium Electroplated Coatings (GB/T 9797-2005, ISO 1456; 2003, IDT) GB/T 9799 Metallic and Other Inorganic Coatings - Zinc Electroplated Coatings on Steel and Iron after Treatment (GB/T 9799-2011, ISO 2081; 2008, 1DT) GB/T 11918.1-2014 Industrial Plugs, Sockets, and Couplers - Part 1: General Requirements (IEC 60309-1:2012, MODGB/T 12599 Metallic Coatings - Tin Electroplated Coatings - Technical Specifications and Test Methods (GB/T 12599-2002, ISO 2093:1986, MODGB/T 13539.1 Low Voltage Fuses - Part I: Basic Requirements (GB/T 13539.1-2015, IEC60269-1:2009, IDT) GB/T 13539,2 Low Voltage Fuses - Part 2: Supplementary Requirements for Fuses Used by Professional Personnel (Fuses Mainly Used in Industry) - Examples of Standardized Fuse Systems A to K (GB/T 13539.2-2015, IEC 60269-2:2013, IDT)
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