Manual for REF 610

The REF610 is a versatile multifunction protection relay designed for incoming and outgoing feeders. It offers various protection functions including overcurrent, ground-fault, thermal overload, and optional arc protection. The relay features a microprocessor environment with self-supervision, an HMI with LCD and navigation buttons, and supports remote communication via SPA-bus, IEC 60870-5-103, Modbus, and DNP 3.0 protocols. It has configurable inputs and outputs for flexible application design. The relay also includes a disturbance recorder and supports automatic reclosing and trip lockout functions.