QB-proof crane for all motors, electrical explosion-proof performance in line with GB3836.2-2000 "explosive gas environment proof electrical equipment Part 2: Flameproof" d "", overall performance meet the JB/T5897-1991 "explosion-proof overhead cranes," the provisions of the standard, explosion-proof products designated by the state inspection test units made "explosion-proof certification." Ex marks were Exd Ⅱ BT4, Exd Ⅱ CT4.
This product is suitable for the plant capacity is not higher than the booster or Ⅱ B Ⅱ C grade is not lower than the ignition temperature group T4 group can be natural gas or steam and air to form explosive gas mixture, for the danger zone for the 1 zone 2 zone (see GB3836.1-2000).
The products are generally for ground operations, according to user needs can be cab operation. Work at a medium level.