PSD 192/08 is the name of a series of protection relays manufactured by Powersem, a French manufacturer of industrial electrical equipment. The protection relays are designed for distribution networks and industrial applications. They are designed to detect overvoltages, undervoltages, current imbalances, and other anomalies in a power system. The relays use digital technology to quickly analyze incoming data and provide a reliable tripping action if required. Additionally, they are capable of providing diagnostics and measurement capabilities to help customers easily diagnose problems in their power systems.