NB/T 11450-2023 Mining flameproof three-phase permanent magnet synchronous motorized pulley

GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB/T 755-2019 Rotating electrical machines—Rating and performance GB/T 2423.4-1993 Basic environmental testing procedures for electric and electronic products—Test Db:Damp heat, cyclic GB/T 2423.4-2008 Environmental testing for electric and electronic products—Part 2:Test method—Test Db:Damp heat,cyclic(12 h+12 h cycle) GB/T 3836.1-2021 Explosive atmospheres—Part 1:Equipment—General requirements GB/T 3836.2-2021 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures “d” GB/T 3836.3-2021 Explosive atmospheres—Part 3:Equipment protection by increased safety “e” GB/T 4942-2021 Degrees of protection provided by the integral design of rotating electrical machines(IP code)—Classification GB/T 4942.1-2001 Classification of degrees of protection provided by enclosures of rotating electrical machines (IP code) GB/T 4942.1-2006 Degrees of protection provided by the integral design of rotating electrical machined(IP code)—Classification GB/T 4942.2-1993 Degrees of protection provided by enclosures for low-voltage apparatus 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/T 10111-1988 Methods for random sampling by utilizing dices of random number GB/T 10111-2008 Generation of random numbers and procedures applied to sampling inspection for product quality GB/T 10595-2017 Belt conveyors GB/T 13560-2000 Materials for sintered neodymium iron boron permanent magnets GB/T 13560-2009 Materials for sintered neodymium iron boron permanent magnets GB/T 13560-2017 Sintered neodymium iron boron permanent magnets GB/T 22669-2008 Test procedures for three-phase permanent magnet synchronous machines GB/T 22714-2008 Test specifications of interturn insulation of form-wound winding for AC low-voltage electrical machines GB/T 22719.1-2008 Interturn insulation of random-wound winding for AC low-voltage electrical machines—Part 1:Test methods GB/T 34491-2017 Coatings for sintered neodymium iron boron permanent magnets AQ 1043-2007 Mining Product Safety Mark Identification JB/T 7330-2018 Electric rolling drum MT/T 962-2019 Coated layer for coal mining belt conveyor drum GB/T 191-2025 Graphical symbols marking for handling and storage of packages