numerical relays The facts about numerical relays that every electrical engineer should know By electrical-engineering-portal.com Published On :: Wed, 23 Dec 2020 09:55:19 +0000 The first protection devices based on microprocessors were employed in 1985. The widespread acceptance of numerical technology by the customer and the experiences of the user helped in developing the second generation numerical relays in 1990. Modem power system protection... Read more The post The facts about numerical relays that every electrical engineer should know appeared first on EEP - Electrical Engineering Portal. Full Article Electrical Lectures Power Substation Protection control and monitoring digital signal earth fault iec 61850 metering function motor protection relay numerical relays overcurrent relay communication relay hardware relay software self-check feature undercurrent