产品名称: BQJ51系列防爆自耦减压电磁起动箱（ⅡB） 适用范围Application 1区、2区危场所。IIA、IIB类爆竹性气体环境.Can be used in Zone 1 and Zone 2one 2 dangerous places.Can be used in IIA,IIB group explosive atmosphere. 型号含义Model implication 产品特点 Features  外壳为钢板焊接而成.内装有自耦变压器,交流接触器,时间继电器.中间继电器,热继电器,电流互感器,转换开关熔断器,电压表,电流表,指示灯等.具有过载,短路,失压,断相保护等功能.符合GB3836-2000,IEC60079 标准要求.The shell is welded of steel plates.Inside is arranged varitran,AC contactor,time relay,interposiongrelay,thermal relay,current transformet,selector,fuse,voltmeter,Ammeter and indicator etc.Steel tube wiring or cable wiring.Suitable for GB3836-2000,IEC60079 standard request. 主要技术参数 Main technical parameters 产品型号Type 电机功率（KW）Motor power 额定电流(A)Rated current 自耦变压器容量（KVA）Varitran power  电流互感器比值 CT ratio 防爆标志 E-mark 使用类别 Usage category  防护等级 Protection class CBQ55-14  14 28 14 50/5 Exd II BT4  AC-3AC-4 IP54CBQ55-20 20 40 20 75/5CBQ55-22 22 44 22CBQ55-28 28 58 28CBQ55-30 30 60 30CBQ55-40 40 80 40 100/5CBQ55-45 45 90 45 150/5CBQ55-55 55 110 55CBQ55-75 75 142 75 200/5CBQ55-100 100 200 100 300/5CBQ55-115 110 230 110 防腐等级 Corrosion-proof grade  进线口螺纹(G") Inlet’s thread  出线口螺纹（G"）Outlet’s thread  电缆外径（Φmm）Cable’s outside diameter WF1 1/2-3 1/2-3  30-50   外形及安装尺寸 Outlinge and installing dimension 型号 Type A B CCBQ55-14-55 1190 550 400CBQ55-75-100 1420 650 500