Device for relay retrofit in an electrical substation

摘要

The invention concerns a device for relay retrofit in an electrical substation comprising a withdrawable old relay with a case (12) and an active part, wherein a new relay fits in the same location as the old relay, the active part (11) of the new relay being mechanically housed in said case (12), said device comprising a patch-brick (10) which attaches to the rear of the active part of the new relay to slide in the old relay case (12).