PROJECT TITLE :

Scatter reduction of the 50-60 Hz breakdown voltage test for insulating liquids

ABSTRACT:

There are several reasons to check the breakdown voltage of insulating liquids: acceptance tests on new deliveries, testing of treated liquids prior to or throughout filling into electrical equipment, and monitoring and maintaining oil-crammed equipment in service. Among others, the check for the determination of breakdown voltage at 50 or sixty Hz is one amongst the foremost important. In fact, it is worldwide accepted that this take a look at provides quickly very helpful info even if mainly related with moisture and particle content than the intrinsic properties of the insulating liquids. This check is standardized by IEC and ASTM however has some limitations in terms of the statistical scatter of mean price of the breakdown voltage. This paper presents an improvement on the scatter of the mean values of the breakdown voltage by increasing the amount of requested shots and discarding the most disperse results. As well, it's presented as a revised check cell having stirring device on the top and spherical edges at the bottom might any reduce the quality deviation of the identical breakdown voltage. Others experimental parameters that may still influence the scatter of the same standardized test also are examined and mentioned.