System and method for alternating-direct high voltage leak detection

A leak detection apparatus using an AC voltage with a DC high voltage offset comprising:

• an inspection electrode electrically connected to a high voltage rectifier;
• the high voltage rectifier further electrically connected to a pulse autotransformer or by other means of creating an AC voltage with a DC high voltage offset;
• a first DC voltage power supply electrically connected to the pulse autotransformer, the pulse autotransformer further electrically connected to a high voltage control board;
• a second DC voltage power supply electrically connected to the high voltage control board, a detection board, a programmable logic controller, and a display to supply them by power;
• a detection electrode electrically connected to the detection board, the detection board further electrically connected to the programmable logic controller,
• the programmable logic controller further electrically connected to the display;
• wherein the detection electrode and the inspection electrode are positioned such that a package fits between the detection electrode and the inspection electrode, and an AC voltage with a DC high voltage offset is applied through the inspection electrode.