This standard specifies the general technical conditions and requirements, test methods, inspection rules, and requirements for marking, packaging, transportation, and storage of busbar protection devices. This standard is applicable to busbar protection devices (hereinafter referred to as devices) with voltage levels of 110kV and above, and serves as the basis for product design, manufacturing, inspection, and application. The following normative references are essential for the application of this standard. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB/T 191 Packaging, Storage and Transport Pictorial Symbols (ISO 780:1997, MOD) GB/T 2423.3 Environmental Testing for Electrical and Electronic Products Part 2: Test Methods Test Cabs: Constant Damp Heat Test (IEC60068-2-78:2001, IDT) GB/T 2887-2000 General Specification for Electronic Computer Sites GB/T 2900.1 Basic Terminology of Electrical Terminology GB/T 2900.17 Electrical Terminology, Measurement Relay [eqv IEC 60050 (446): 1997] GB/T 2900.49 Electrical Terminology Dun Power System Protection [IEC 60050 (448) 1995, DT] GB 4208 Degrees of Protection Provided by Enclosures (P-Code) (IEC 60529:2001, IDT) GB 4798.2 Environmental Conditions for the Application of Electrical and Electronic Products, Part?: Transport (GB/T 4798.2-2008, IEC 60721-3-2997, MOD) GB/T 7261-2008 Basic Test Methods for Relay Protection and Safety Automatic Devices
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