Transformer protection and control

When protecting power transformers, it can be challenging to maintain security during current transformer (CT) saturation for external faults while detecting low-magnitude internal faults.  

It’s often difficult to find a one-size-fits-all solution. Most transformer operations rely on modular, scalable, reliable, and sustainable transformer protection schemes. Hitachi Energy is your partner in providing reliable, cutting-edge, and flexible transformer protection solutions. 

Hitachi Energy intelligent electronic devices (IED) offer fast and selective protection, monitoring, and control for all types of transformers, including step-up, two-winding, and three-winding transformers, as well as special transformers and reactors used in the transmission, distribution, and rail markets. 

Our transformer protection is built on IEC 61850 and showcases Hitachi Energy's leading-edge technology and application experience.