MiCOM Alstom P441, P442 & P444 numerical full scheme distance relays provide flexible, fast and reliable protection of transmission and sub-transmission lines.
- Full scheme 5-zone distance, plus aided directional earth fault (DEF) and comprehensive backup protection
- Application fields: utility lines and cables at all voltage levels, particularly oriented towards transmission grids
- Single circuit breaker application - single and/or 3-pole tripping
- Full suite of monitoring, control and recording capabilities plus fault locator, autoreclose and check synchronism