The liquid specific moisture saturation coefficients A and B are required for accurate use of thin film capacitance moisture sensors. These have been previously produced and evaluated for new liquids including synthetic and natural esters. In-use synthetic and natural esters have not yet been evaluated. This paper aims to demonstrate the difference in results of aged esters compared to new, as wel...Show More
Traditionally, mineral oil has been used as the insulating liquid in transformers due to its high electrical breakdown strength and cooling ability. More recently, natural and synthetic ester based dielectric liquids are increasingly adopted as alternatives, offering much improved fire safety and environmental protection. The dielectric dissipation factor (DDF), via tan delta measurement, has trad...Show More
