GB/T 21974-2008 Technical specification for YZRW range of eddy-current braking wound-rotor three-phase induction motors for crane and metallurgical application

GB/T 21974-2024 YZRW series eddy-current braking wound-rotor three-phase induction motors for crane and metallurgical applications—Technical specification(frame size 112～315)

GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB 755-2000 Rotating electrical machines—Rating and performance 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) GB/T 1032-2005 Test procedures for three-phase induction motors GB/T 1096-2003 Square and rectangular keys 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 10068-2000 Mechanical vibration of certain machines with shaft heights 56mm and higher—Measurement,evaluation and limits of vibration GB/T 10069.1-2006 Measurement of the 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 10069.3-2006 Measurement of airborne noise emitted by rotating electrical machines and the noise limits—Part 3:Noise limits GB/T 13306-1991 Plates GB 20237-2006 Safety requirements of crane and metallurgical motors and canned motors JB/T 9615.1-2000 Test Method for Inter-Winding Insulation of AC Low-Voltage Motors with Embedded and Wrapped Windings JB/T 9615.2-2000 The inter-turn insulation test limit value for the loose-wound winding of low-voltage motors