The REL 512 is a fully integrated transmission line protection system and breaker control terminal. It is the second-generation product based on new protection concepts, the most advanced functions and flexibility are available to meet your transmission line distance protection application requirements.
The REL 512 utilizes a combination of time and frequency domain algorithms and multiple microprocessors to provide comprehensive high-performance protection with one cycle operating speed and high reach accuracy while providing immunity to transient overreaching. REL 512 includes comprehensive pilot logic, overcurrent protection, reclosing option, breaker failure protection, fault location and DFR recording.