Test circuits for HVDC thyristor valves

In conformity with the usual classification of the specified tests into two major categories, dielectric tests and operational tests, the report is in two parts : Part 1 - Dielectric tests which deals principally with test circuits for verifying the high voltage characteristics of the valve, and Part 2 - Operational tests, which deals principally with test circuits for verifying the turn-on, turn-off and current related characteristics of the valve.