Numerical line protection
Outdated product since 2009.
Replaced by REL670 IEC and REL670 ANSI.
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.