Title :
Effects of magnetic field on tracking failure of gamma-ray irradiated polymer insulating materials
Author :
Du, B.X. ; Liu, H.J. ; Wang, Xinhui
Author_Institution :
Key Lab. of Power Syst. Simulation & Control of Educ. Minist., Tianjin Univ., Tianjin, China
Abstract :
This paper describes the effect of magnetic field on tracking failure of gamma-ray irradiated polybutylene naphthalate (PBN), polybutylene terephthalate (PBT) and polyethylene terephthalate (PET). The experiment was carried out by applying a dc pulse voltage under magnetic field. The magnetic flux density (MFD) of the magnetic filed was 495 mT and the direction of E×B was 0, 90 and 270 degrees with respect to the sample surface. The PBN, PBT and PET were irradiated in air up to 100 kGy and then up to 1000 kGy with a dose rate of 10 kGy/h by using a 60Co gamma-source. Obtained results revealed that the tracking failure was greatly changed by gamma-ray irradiation and magnetic field.
Keywords :
gamma-ray effects; insulating materials; magnetic flux; polymer insulators; gamma-ray irradiated polybutylene naphthalate; gamma-ray irradiated polymer insulating materials; magnetic field; magnetic flux density; polybutylene terephthalate; polyethylene terephthalate; tracking failure; Degradation; Discharges; Insulation life; Magnetic fields; Polymers; Positron emission tomography; Radiation effects; Gamma-ray irradiation; cross-linking; degradation; discharge quantity; magnetic field; tracking failure;
Conference_Titel :
Solid Dielectrics (ICSD), 2010 10th IEEE International Conference on
Conference_Location :
Potsdam
Print_ISBN :
978-1-4244-7945-0
Electronic_ISBN :
978-1-4244-7943-6
DOI :
10.1109/ICSD.2010.5568016
