MT 189-1988 Explosion-proof leak detection relay for mine use

GB 1497 GB 998 GB 3836.1-2000 Electrical apparatus for explosive gas atmospheres—Part 1:General requirements GB 3836.1-2010 Explosive atmospheres—Part 1:Equipment—General requirements GB/T 3836.1-2021 Explosive atmospheres—Part 1:Equipment—General requirements GB 3836.2-2000 Electrical apparatus for explosive gas atmospheres—Part 2:Flameproof enclosure “d” GB 3836.2-2010 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures "d" GB/T 3836.2-2021 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures “d” GB 3836.3-2000 Electrical apparatus for explosive gas atmospheres—Part 3:Increased safety “e” GB 3836.3-2010 Explosive atmospheres—Part 3:Equipment protection by increased safety "e" GB/T 3836.3-2021 Explosive atmospheres—Part 3:Equipment protection by increased safety “e” GB 3836.4-2000 Electrical apparatus for explosive gas atmospheres—Part 4:Intrinsic safety“i” GB 3836.4-2010 Explosive atmospheres—Part 4:Equipment protection by intrinsic safety "i" GB/T 3836.4-2021 Explosive atmospheres—art 4:Equipment protection by intrinsic safety “i” GB/T 2900.1-1992 Electrotechnical terminology—Fundamental terms GB/T 2900.1-2008 Electrotechnical terminology—Fundamental terms GB/T 2900.18-1992 Electrotechnical terminology Low voltage apparatus GB/T 2900.18-2008 Electrotechnical terminology—Low voltage apparatus GB/T 2900.35-1998 Electrotechnical terminology electrical apparatus for explosive atmospheres GB/T 2900.35-2008 Electrotechnical terminology Equipment for explosive atmospheres GB/T 2900.35-2023 Electrotechnical terminology—Explosive atmospheres GB/T 4942.2-1993 Degrees of protection provided by enclosures for low-voltage apparatus GB/T 2829-2002 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of process stability) MT/T 154.1-1992 The guidelines for the preparation of coal mine electromechanical product models and management measures MT/T 154.2-1996 The method for preparing product model numbers of coal mining electrical equipment and management measures MT/T 154.1-2011 Coal mine electromechanical product model designation method Part 1: Guidelines MT/T 154.2-2019 Coal mining electromechanical product model numbering method - Part 2: Model numbering method for electrical products JB/T 4002-2013 Explosion-proof low-voltage electrical connector terminal。 JB 4002-1992 Mining low-voltage electrical equipment for wiring terminals used in explosion-proof type JB/T 4262-1992 Explosion-proof electrical rubber-insulated cable introduction device GB/T 2829-2025 Sampling procedures and tables for periodic inspection by attributes(Apply to inspection of process stability)