Z series Combined transformer,commonly named as American box type transformer,has outstanding features including reliable power supply,compact structure,fast and flexible installation,convenient operation,small size,etc.It can be widely used in industrial areas, residential communities, commercial centers,urban roads,high-rise buildings and other premises.The difference between this kind of product and European box-type transformer domestically man-ufactured is:American box-type transformer is designed with integration of transformer part,highvoltage load switch,protective fuse and other devices,and placed in an oil tank for relatively comparably smaller size.