This crane adapts to the environment in factory that have explosive gas formed by inflammable gas、steam and air of which explosion proof grade is less than B grade or C grade and ignition group is more than T4(135℃)group. And the explosion proof electric hoist adapts to 1 area or 2 area,not 0 area.

Notes:0 area:Under normal circumstances,the situation that explosive gas mixture appear continuously in a very short time or exist for a long time.

1. Area:Under normal circumstances, the situation that explosive gas mixture maybe appear.

2. Area:Under normal circumstances,explosive gas mixture can not appear. But under abnormal circumstances that equipment is out of order or misoperation takes place,the explosive gas mixture appears occasionally in a short time.