... control transformer ·GBK Series of control transformer used in 50-60hz, voltage to 5000 V circuit, ... .W:2.3kg·Usage:They are used in various machinary equipments,including:normal electric control ... you, we can discuss together. Established in 1995,Shanghai Qipier Electric Manufaturing Co.,Ltd, ... department. We hope to cooperate with you in near future. You are very welcome to visit our factory ...