This standard specifies the requirements for the structure and model, technical requirements, inspection content and methods, inspection regulations, marking, packaging, and storage of rotary connectors for overhead transmission lines (referred to as rotary connectors). This standard applies to the design, manufacturing, inspection, and use of rotary connectors. The following normative references are essential for the application of this standard. For dated references, only the dated version applies to this standard. For undated reference documents, the latest version (including all repair orders) applies to this standard. GB/T 191 Packaging, Storage, and Transportation Pictorial Symbols (GB/T 191-2008, 1SO 780:1997, MOD) GB/T 271 Classification of Rolling Bearings GB/T 272 Method of Rolling Bearing Designations GB/T 275 Matching of Rolling Bearings with Shafts and Enclosures GB/T 307.1 Rolling Bearings - Tolerances for Radial Bearings (GB/T 307.1-2005, ISO 492:2002, MOD) GB/T 307.4 Tolerances for Rolling Bearings - Part 4: Tolerances for Thrust Bearings (GB/T 307.4-2012, ISO 199:2005, IDT) GB/T 1031 Technical Specifications for Product Selection (GPS) Surface Texture Profile Method: Surface Roughness Parameters and Their Values GB/T 1591 Low Alloy High Strength Structural Steels GB/T 3077 Alloy Structural Steels (GB/T 3077-1999, DIN EN 10083-1: 1991, NEQ) GB/T 13306 Signage DL/T 318 Method for Product Type Selection of Construction Machinery for Transmission and Transformation Engineering DL/T371-2010 Design of Construction Machinery for Overhead Transmission Lines DL/T875 Basic requirements for testing JB/T 5054.1 General principles for product design documents JB/T 5054.2 Basic requirements for product design documents and drawings
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