The Operation Of Moisture Equilibrium In Determining Electrification In Oil/cellulose Structures

Several of the transformer failures which have been attributable to static electrification have occurred within a few hours of energization in the absence of known system overvoltages. This suggests that perhaps thermal processes having a long time constant have been involved with the accumulation of static charge, since the electrification process is known to be a function of temperature [I]. Since temperature affects most of the factors involved, the predominant variable by which temperature influences charge accumulation (mobility, viscosity, conductivity, etc.) is not always evident.