GB/T 21971-2008
Technical specifications for YZD range of multi-speed three-phase induction motors for crane application (English Version)
- Standard No.
- GB/T 21971-2008
- Language
- Chinese, Available in English version
- Release Date
- 2008
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2021-06
- Replace By
- GB/T 21971-2020
- Latest
- GB/T 21971-2020
- Scope
- This standard stipulates the type, basic parameters and dimensions, technical requirements, inspection rules and test methods, marking, packaging and warranty period requirements of YZD series multi-speed three-phase asynchronous motors for hoisting. This standard applies to all kinds of three-phase asynchronous motors (hereinafter referred to as motors) used for electric transmission of various hoisting machinery. All kinds of motors derived from this series of motors can also be implemented as a reference.
GB/T 21971-2008 Referenced Document
- GB 10068-2000 Mechanical vibration of certain machines with shaft heights 56mm and higher-Measurement,evaluation and limits of vibration
- GB 10069.3-2006 Measurement of airborne noise emitted by rotating electrical machines and the noise limits. Part 3: Noise limits
- GB 20237-2006 Safety requirements of crane and metallurgical motors and canned motors
- GB 755-2000 Rotating electrical machines-Rating and performance
- GB/T 10069.1-2006 Measurement of airborne noise emitted by rotating electrical machines and the noise limits Part 1: Method for the measurement of airborne noise emitted by rotating electrical machines
- GB/T 1032-2005 Test procedures for three-phase induction motors
- GB/T 1096-2003 Square and Rectangular keys
- GB/T 13306-1991 Plates
- GB/T 191-2000 Packaging-Pictorial marking for handling of goods
- GB/T 1993-1993 Cooling methods for rotating electrical machines
- GB/T 2423.4-1993 Basic environmental testing procedures for electric and electronic products. Test Db:Damp heat,cyclic
- GB/T 4772.1-1999 Dimensions and output series for rotating electrical machines. Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080
- GB/T 4942.1-2006 Degrees of protection provided by the integral design of rotating electrical machined (IP code) - Classification
- GB/T 757-1993 Conical snaft extension for rotating electrical machines
- GB/T 997-2003 Classification of types of construction and mounting arrangements for rotating electrical machines(IM code)
- JB/T 9615.1 Test methods of the interturn insulation on random wound winding for AC low-voltage machines
- JB/T 9615.1-2000 Test methods of the interturn insulation on random wound winding for AC low-voltage machines
- JB/T 9615.2 Test Limits of the interturn insulation on random wound winding for AC low-voltage machines
GB/T 21971-2008 history
- 2020 GB/T 21971-2020 YZD series multi-speed three-phase induction motors for crane application—Technical specification
- 2008 GB/T 21971-2008 Technical specifications for YZD range of multi-speed three-phase induction motors for crane application
