AN EXPERIMENTAL STUDY TO DETERMINE THE LIFE TIME OF NATURALLY AGED TRANSFORMER OIL

1Faculty of Engineering,Cairo University,Egypt

2Faculty of Engineering,Al-azhar University Qena ,Egypt

Several efforts have been made over the past years to study the electrical, physical and

chemicals properties of insulating oils. Among those efforts there is a property of natural aged

oils (real oil samples corresponding to the scale of industrial transformers). This is

investigated in this paper to determine the life time of naturally aged oil with different applied

electric field and different shapes. This paper presents an experimental work to study the life

time of transformer oil as a function of conduction current. In this paper, the electrification

current in the tested oil is measured for different temperatures. Finally, tests have been carried

out on oil samples under testing with different services period to determine the relation

between breakdown voltage and the oil life time under uniform and nonuniform fields.