RMSD7912 / RMSD7921 – Directional Overcurrent Relays
Products family : Feeder Protection, Current Protection
Sector : Industry
The optimum operation of an electrical network depends particularly on the reliability and the availability of the protection, measuring and automation devices, and the way these devices can communicate their informations.
RMSD 7900 relays provide directional protection of three-phase electrical networks.
– RMSD 7921 is designed to assure a directional phase fault protection of looped networks or the fast separation or “islanding” of networks having several sources in parallel.
– RMSD 7912 is designed for directional earth fault protection on looped or multiple earthing points networks.
ANSI codes
67 – Phase directional overcurrent
67N – Earth directional overcurrent