MT/T 943-2005 Low voltage AC soft-starter for coal mine

MT/T 943-2019 Mining low-voltage AC soft starter

GB 14048.4-2003 Low-voltage switchgear and controlgear—Electromechanical contactors and motor-starters GB 3836.1-2000 Electrical apparatus for explosive gas atmospheres—Part 1:General requirements GB 3836.2-2000 Electrical apparatus for explosive gas atmospheres—Part 2:Flameproof enclosure “d” GB 3836.4-2000 Electrical apparatus for explosive gas atmospheres—Part 4:Intrinsic safety“i” GB/T 14048.1-2000 Low-voltage switchgear and controlgear—General rules GB/T 2423.1-2001 Environmental testing for electric and electronic products—Part 2:—Test methods Tests A:Cold GB/T 2423.2-2001 Environmental testing for electric and electronic products—Part 2:Test methods-Tests B:Dry heat GB/T 2423.4-1993 Basic environmental testing procedures for electric and electronic products—Test Db:Damp heat, cyclic GB/T 762-2002 Standard current ratings MT 111-1998 MT 175-1988 Mining explosion-proof electromagnetic starter with electronic protector MT/T 175-1988 Mining Explosion-proof Electromagnetic Start-up Transformer with Electronic Protector MT/T 154.2-1996 The method for preparing product model numbers of coal mining electrical equipment and management measures MT/T 412-1995 MT/T 661-1997 General technical condition for electrical apparatus used underground mine