HBIntroduction to explosion-proof electric hoist：
HBType explosion-proof electric hoist适用于含有可燃性气体、In the case of explosive mixtures formed by steam and air，HB系列隔爆Type explosion-proof electric hoist适用于具有IIA、IIB、IIClevel，The temperature group isT1～T4Places with explosive gas mixtures composed of combustible gases or vapors and air in the group。HBThe explosion-proof electric hoist can be divided into two typesBlevel、Clevel。HBType explosion-proof electric hoist一般适用在1area、2area。Explosion proof electric hoist可适用的温度主要是从T1-T6，达到T6这个level别是最高温度限制。比方说DIICT4这个所代表的是：dRepresentative explosion-proof type。II代表IIClass explosion-proof，即厂用防爆。C代表可用于CGrade explosion-proof area，也就是可用于最危险的area域。T4代表温度组别。目前来说Explosion proof electric hoist用DIICT4There are many levels available。  

Explosion proof electric hoist的特点：BCDExplosion proof electric hoist，BMDExplosion proof electric hoist，HBtype（mine）Explosion proof electric hoist，Reviewed by the National Quality Supervision and Testing Center for Explosion proof Electrical Products，The model is determined asHBType andHBStype。结构和技术参数与BCDType explosion-proof electric hoist、BMDType explosion-proof electric hoistExactly the same。

HBClassification of explosion-proof levels and hazardous gas classification for type explosion-proof electric hoists：EX IIBT4  ethane、丙烷、butane、Heptane、ethylene、一氧化碳、gasoline、acetone、styrene 、toluene、苯、methanol、乙醇、氯ethylene、Acetaldehyde, etc。 EX IICT4  hydrogen、水煤气及EX IIBT4Other gases。

HBExecutive standard for explosion-proof electric hoists：
1、JB/T5897-91《overhead explosion-proof crane 》 
2、JB/T10219-2001《Explosion proof beam crane》
3、JB/T10222-2001《防爆钢丝绳Electric hoist》
4、GB/T5663-94《gantry crane with electric hoist 》 
5、GB3811-83《Crane Design Specification》 
6、GB6067－85《Crane Safety Regulations》 
7、GB3836.1-2000《Electrical equipment for explosive gas environments    Section1part：General requirements》 
8、GB3836.2-2000《爆炸性气体环境用电器设备    Section2part：隔爆type“d”》

The explosion-proof motor used in our company's explosion-proof electric hoist products、防爆电器均取得了国家颁发的防爆合格证、MA证。国家技术监督总局颁发的许可证。