Posted 22 Jun 2016 Ring main unit switching devices have three position designs - closing- opening and earthing.. anyone know more about earthing ? Share this post Link to post Share on other sites
Posted 22 Jun 2016 http://electrical-engineering-portal.com/ring-main-unit-rmu-as-an-important-part-of-secondary-distribution-substations 1 person likes this Share this post Link to post Share on other sites
Posted 28 Jun 2016 Hey Thanx , notify me link for ring main unit position designs. Share this post Link to post Share on other sites