MT/T 1265-2025 Mining explosion-proof high-voltage alternating current vacuum electromagnetic contactors

GB 311.1-1997 Insulation co-ordination for high voltage transmission and distribution equipment GB/T 311.1-2012 Insulation co-ordination—Part 1:Definitions,principles and rules GB/T 762-2002 Standard current ratings GB 1985-2004 High-voltage alternating-current disconnectors and earthing switches GB/T 1985-2014 High-voltage alternating-current disconnectors and earthing switches GB/T 1985-2023 High-voltage alternating current disconnectors and earthing switches 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 3836.4-2021 Explosive atmospheres—art 4:Equipment protection by intrinsic safety “i” 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 11022-2020 Common specifications for high-voltage alternating-current switchgear and controlgear standards GB/T 14808-2016 High-voltage alternating current contactors,contactor-based controllers and motorstarters GB/T 16927.1-1997 High-voltage test techniques Part 1:General test requirements GB/T 16927.1-2011 High-voltage test techniques—Part 1:General definitions and test requirements AQ 1043-2007 Mining Product Safety Mark Identification JB/T 8739-2015 Mining explosion-proof high-voltage distribution equipment MT/T 111-2011 Mining explosion-proof low-voltage AC vacuum electromagnetic starter。 MT/T 154.2-1996 The method for preparing product model numbers of coal mining electrical equipment and management measures MT/T 154.2-2019 Coal mining electromechanical product model numbering method - Part 2: Model numbering method for electrical products MT/T 661-2011 Common Technical Requirements for Electrical Equipment for Coal Mine Underground Workings