Numerical line protection
The REL301/302 is an extension to REL300 (MDAR) to specifically address the retrofitting and integrated reclosing for the three-pole trip transmission line market. FT-42 case packaging (for retrofit), programmable output contacts, and reclosing functions are included in the design. The REL301 addresses non-pilot applications. The REL302 provides the same functionality as the REL301 plus the proven MDAR pilot logic.