EN 62501This description is for standard: EN 62501IEC 62501:2009 applies to self-commutated converter valves, for use in a three-phase bridge voltage sourced converter (VSC) for high voltage d.c. powe
EN 61975This description is for standard: EN 61975IEC 61975:2010(E) applies to system tests for high-voltage direct current (HVDC) installations which consist of a sending terminal and a receiving ter