PCS-9671S is specially used to protect power transformers of various types, including two-winding, three-winding (up to 3 branches), autotransformers and shunt reactors of any voltage level. PCS-9671S provides basic protection elements such as: current differential protection and earth fault protection. With the modular structure, flexibility and powerful design tool PCS-Studio, PCS-9671S provides future-oriented system solutions with high investment security and low operating costs.