DETERMINING THE OPERATING TIME OF THE ELECTROINSULATING OIL FOR POWER TRANSFORMERS

This paper presents a way of assessing the durability of the electroinsulating oil used on medium/low voltage power transformers owned by the national electricity supplier (SDFE) in Oradea. Statistics about the operation durations, before replacing the electroinsulating material, reveal a Rayleigh non-exponential distribution, specific for the degradable products, exclusively due to aging.