Abstract
The main reason of the research was to show the very important role of the dielectric losses in the insulation, during the initiation of water release from paper insulation, which is known as the bubble effect. The authors' thesis is that the dielectric losses increase in heavily moistened and aged cellulose insulation can cause dangerous temperature increase. The result of the temperature increase can be a dangerous bubble effect. The temperature increase caused by the dielectric losses in the paper insulation was called the thermal effect. The authors used samples of new and aged cellulose insulation for the research. The ageing extent of the paper samples was described by means of the cellulose polymerization degree. The ageing extent of the oil was described by means of the neutralization value. The authors investigated the influence of cellulose insulation ageing and moistening on dielectric losses. They also described conditions, i.e. insulation moistening and ageing, electric field intensity, which can lead to the thermal effect with the resulting bubble effect.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IEEE Transactions on Dielectrics and Electrical Insulation
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
