YB2 series explosion-proof three-phase asynchronous motor is divided into two types – Exdl and ExdllBT4 – according to service requirements. Its explosion-insulating performance meets GB3836.1-2000 Electrical apparatus for explosive gas atmospheres – Part 1: General requirements and GB3836.2-2000 Electrical apparatus for explosive gas atmospheres – Part 2: Explosion insulation “d”, suitable for operating environments including underground non-excavating working face in coal mines or areas with explosive gas mix in factories.