Process for determining with high accuracy the rate of leakage through the skin of an electrical apparatus

Abstract From the Canadian patent

According to the process, pairs or pressure and temperature are recorded with a pressure sensor and a temperature sensor attached to the skin on the outside and in contact with the gas dielectric to calculate a value for the density of the gas dielectric for each pair. Simultaneous with pressure and temperature the electric current flowing through the electrical equipment inside the skin and one climatic parameter from outside the skin are recorded to assign an index to each density value to determine the rate of leakage with improved accuracy using indexed rates of leakage obtained using density values with the same index.