This standard specifies the types, basic parameters and dimensions, technical requirements, inspection rules, and requirements for identification and packaging of large three-phase asynchronous motors. This standard applies to large ¥ series four pole and above general-purpose cage rotor three-phase asynchronous motors (hereinafter referred to as ¥ series motors) and large YR series four pole and above general-purpose wound rotor three-phase asynchronous motors (hereinafter referred to as YR series motors), with center heights of 710, 800, 900, 1000, and 120 mm, respectively. Large YKS and YRKS series three-phase asynchronous motors shall comply with this standard. Matters not specified in this standard shall comply with the relevant provisions of GB 755. 2 Normative References: The clauses in the following standards are referred to as clauses in this standard. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions shall not apply to this standard. However, it is encouraged for all parties who have reached agreements based on this standard to investigate whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB/T 191 Packaging, Storage and Transportation Pictorial Symbols (GB/T 191-2000, eqv ISO 780:1997) GB 755 Rotating Electrical Machines, Rating and Performance (GB 755-2000, idt 1EC 60034-1; 1996) GB/T 997 Rotating Electrical Machines - Structure and Installation Types (IM) Code (GB/T 997-2003, idt IEC 60034-71992) GB/T 1032 Test Methods for Three Phase Asynchronous Motors GB/T 1096 General Type, Flat Key (GB/T 1096-2003, neq ASTM B18.2S.1M: 1996) GB 1971 Symbols and Direction of Rotation for Rotating Electrical Machines GB/T 1974 Tangential Keys and Their Keyways GB/T 1993 Cooling Methods for Rotating Electrical Machines GB/T 4772.2 Dimensions and Output Power Levels of Rotating Electrical Machines Part 2: Frame Numbers 355~1 000 and Flange Numbers 1180~2 360 (GB/T 4772.2-1999, idt IEC 72-21990) GB/T 4831 Method for Preparing Motor Product Models GB/T 4942.1: Classification of Protection for Rotating Electrical Machinery Enclosures (IP Code) (GB/T 4942.1-2001, idt IEC 60034-51991) GB 10068 Measurement of Mechanical Vibration and Vibration of Motors with a Shaft Center Height of 56 mm and Above Evaluation and Limits (GB 10068-2000, idt 1EC 60034-14; 1996) GB/T 10069.1 Methods and Limits for the Measurement of Noise from Rotating Electrical Machines - Part 1: Methods for the Measurement of Noise from Rotating Electrical Machines (GB/T 10069.1-2006, ISO 61680-1:1999, MOD) GB 10069.3 Methods and Limits for the Measurement of Noise from Rotating Electrical Machines - Part 3: Noise Limits JB/T 10098 Impact Voltage Level of AC Motor Stator Formed Coils
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