This standard specifies the type, basic parameters and dimensions, technical requirements, inspection rules, marking, packaging and warranty period requirements for safety-level low-voltage three-phase asynchronous motors in nuclear power plants. This standard applies to safety-level low-voltage three-phase asynchronous motors (frame numbers 80~355) outside the containment shell of nuclear power plants (hereinafter referred to as motors). All other motors derived from this series of motors can refer to the implementation.
NB/T 20302-2014 Referenced Document
GB 10068-2008 Mechanical vibration of certain machines with shaft heights 56 mm and higher.Measurement,evaluation and limits of vibration severity
GB 14711 General requirements for safety of small and medium size rotating electrical machines
GB 1971-2006 Rotating electrical machines. Terminal markings and direction of rotation
GB 755-2008 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 1032-2012 Test procedures for three-phase induction motors
GB/T 12665-2008 Requirements of damp-heat testing of electrical machine for sevice in general environmental condition
GB/T 12727-2002 Nuclear power plants--Electrical equipment of the safety system-Qualification
GB/T 191-2008 Packaging.Pictorial marking for handling of goods
GB/T 1993-1993 Cooling methods for rotating electrical machines
GB/T 20138-2006 Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code)
GB/T 22719.1-2008 Interturn insulation of random-wound winding for AC low-voltage electrical machines.Part 1:Test methods
GB/T 22719.2-2008 Interturn insulation of random-wound winding for AC low-voltage electrical machines.Part 2:Test limits
GB/T 2423.4-2008 Environmental testing for electrical and electronic products - Part 2: Test method Test Db alternating damp heat (12h + 12h cycle)
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 997-2008 Rotating electrical machines.Classification of types of construction,mounting arrangements and terminal box position for(IM Code)
NB/T 20302-2014 history
2014NB/T 20302-2014 Specification of safety class low-voltage three-phase asynchronous motors for nuclear power plants