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000000280 001__ 280
000000280 037__ $$aENY-ARTICLE-2008-225
000000280 041__ $$aeng
000000280 100__ $$aJuchniewicz, J$$uWroclaw University of Technology, Poland
000000280 245__ $$aVoltage Endurance Test of Vacuum Insulation for Cryocables
000000280 260__ $$c1975-02-08
000000280 300__ $$a5p
000000280 500__ $$aIEEE Transactions on Electrical Insulation, Vol. EI-10, No. 4, 1975, pp. 116-119
000000280 520__ $$aVacuum insulation with cylindrical ceramic spacer insulators has been studied with respect to changes of its ac flashover voltage with time. The distributions of times to failure, which were found to confirm Weibull's distribution, were used for plotting the regression curves for times up to 350 h. The results show that even at rather low stresses the flashover voltage decreased in time. This phenomenon is connected with the recorded deposition of metal particles from the electrodes on the surface of the spacers during the tests. This possibility of the decrease of the flashover voltage, induced by the deconditioning effects of contaminating conducting particles generated under the working stress by the system itself, must be taken into account when considering the suitableness of using special means of increasing the short-time flashover voltage of vacuum insulation for cryocables.
000000280 6531_ $$avacuum insulation
000000280 6531_ $$aflashover voltage
000000280 700__ $$aTyman, A$$uWroclaw University of Technology, Poland
000000280 8560_ $$
000000280 8564_ $$u$$zAccess to Fulltext
000000280 909CO $$$$pglobal
000000280 980__ $$aARTICLE