Rotor Overload Protection Relay RPR-2 for Generator Safety

RPR-2 relay is used in brushless and thyristor excitation systems of generators. The purpose of the relay is: in thyristor excitation systems of STS: -protection against rotor winding overload; -protection against forcing of inadmissible duration; -protection against unlimited boost; -protection against unsuccessful inverting; -protection against loss of excitation; -maximum current protection of the rectifier transformer; -current cut-off of the rectifier transformer. in static standby thyristor excitation systems STSR - the same as for STS, but with rotor current scaling depending on the type of connected generator (G1...G4). in brushless excitation systems - the same as for STS, except for rectifier transformer protections.