Sumitomo Electric Completes Type Approval Test for 525kV DC Gas Insulated Switchgear Interface
The collaborative test results showed the conformity of the 525 kV DC cable system and the DC GIS interface in accordance with CIGRE TB496. August 11, 2020 Sumitomo Electric Industries, Ltd. has successfully completed the world’s first type approval test on its 525 kV direct-current (DC) cable system with a......