In 2006, our company introduced a new type of transformer from Germany, and compared it with the JBK3 series machine tool transformer in China. It absorbed and improved the JBK and Jby series control transformer, which made the protection grade up to IP2LX, to prevent accidental access to the circuit. Using domestic IT cold-pressed terminal block, the connection mode can make the connection density increase. The transformer adopts high quality anti-corrosion Alloy Material, which greatly improves the reliability and the product quality.