The proper coordination of protections in BT / MT / AT plants make possible interventions, after an anomaly, only of the protection closer to failure without involving  the rest of the plant.

It is essential therefore, to achieve a protection system capable to  remove quickly the fault and to isolate the operating part of the plant . These requirements are closely linked to each other and should be considered in the light of the overall purpose of the protection system.
RSDI is able to perform studies of coordination, provide calibration data on the installation  and  to prove, instrumentally,  the correct functioning of protection relays.