This series of flameproof motors complies with the national standards GB3836.1-2010 "Explosive atmospheres Part 1: General requirements for equipment" and GB3836.2-2010 "Explosive atmospheres Part 2: Provisions for equipment protected by flameproof enclosures 'd'". At the same time, the design of its flameproof structure and parameters refers to the IEC60079-1 "Structure and test of flameproof enclosures for electrical equipment" and EN50018 "Electrical equipment for explosive atmospheres 'd'".

The motor is made into flameproof type, and the explosion-proof marks are Exd I Mb, Exd II A T4 Gb, Exd II B T4 Gb, Exd II C T4 Gb, which are respectively suitable for underground fixed equipment in coal mines and factories with Class II A, Class II B, Class II C, and temperature groups T1~T4 where there are explosive gas mixtures.