This guide describes methods of corrosion inspection and evaluation of High Voltage Direct Current (HVDC) grounding electrodes, including general requirements, selection of excavation point, excavation, sampling, corrosion inspection, and evaluation. This guide is applicable to corrosion inspection and evaluation of HVDC grounding electrode after excavation with voltage ratings from ±400 kV to ±1100 kV.
Guide for Corrosion Inspection and Evaluation of High Voltage Direct Current (HVDC) Grounding Electrodes (±400 kV to ±1100 kV)
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