Our CCAS instrument has been qualified for live line operations to 425 kV. A successful testing program has been completed for EDF-RTE in France at 400 kV.
These two photographs were taken during live line qualifications at a high voltage testing facility. The CCAS instrument electronics was subjected to repeated and sustained arcing at 425 kV with no effect on instrument performance.
These images were captured using a DayCor II ultraviolet imaging camera manufactured by OFIL LTD. Corona discharge produces large amounts of UV energy. This is displayed as bright white flashes on the black and white video image.