What is a Sel Rtac?

SEL RTAC, or Schweitzer Engineering Laboratories Real-Time Automation Controller, are programmable automation controllers used primarily in the electric power industry. They serve as central points for automating and controlling substations, integrating various Intelligent Electronic Devices (IEDs), and facilitating communication between protection, control, and monitoring systems. SEL RTACs are known for their flexibility, reliability, and ability to support multiple communication protocols, making them essential for modern power system automation.