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pro vyhledávání: '"01"'
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 28:562-568
This paper presents an experimental investigation into the breakdown voltage fall time t f of lightning voltage breakdown of 2–4 centimeter vacuum gaps having a long breakdown delay time t d (>30 µs). The results show that the average 50% breakdow
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 28:215-222
This paper presents an analysis of the creeping discharge characteristics caused by a needle electrode in oil-pressboard insulation under a positive DC voltage. The discharge behavior under a strongly (model I) or weakly (model II) vertical component
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:2056-2063
The objective of this paper is to determine the reshaping of the micro-morphology feature in both the cathode and anode electrode surfaces after conditioning by lightning impulse voltage in vacuum gaps. Materials of the experimental rod-plane electro
Autor:
Miyata Tomoya, Katsunori Suzuki, Hidekazu Kodama, Kunio Hiyama, Yoshinobu Yasuno, Hiroshi Koike, Seiichiro Lida
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1675-1682
A piezo-electret vibration sensor designed for acoustic-electric guitars is evaluated. A piezo-electret, which is a cellular polypropylene electret film, is laminated with a 150-μm-thick polyethylene terephthalate (PET) film to achieve sufficient du
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1273-1279
We report on research into methods to improve the lifetime of insulators in multi-stage gas switches exposed to microsecond kV pulses at 20 Hz repetition rate. Two sets of experiments are reported; first on a comparison of polyetheretherketone (PEEK)
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1068-1075
This study explores the influence of water mist droplet diameter and the spacing between the droplets on the alternating current breakdown characteristics of a water mist-air mixture (WAM) between short ball-ball and rod-plate gaps. The experimental
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:700-707
By conducting vacuum breakdown experiments under 30 μs pulses with a uniform field for gap separations d ranging from 2.5 to 5.5 cm, it is found that the dependence of the breakdown voltage U b on d obeys the total voltage effect (TVE) relation U b
Publikováno v:
Huang, Y, Liu, Q & Wang, Z 2019, ' Effects of Temperature on Partial Discharges and Streamers in an Ester Liquid under AC Stress ', I E E E Transactions on Dielectrics and Electrical Insulation . https://doi.org/10.1109/TDEI.2019.008131
Insulating liquids in transformers experience the transformer operational temperature rather than the ambient temperature that is often used in discharge studies in laboratories. This paper presents the effects of temperature on partial discharge (PD
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 26:1716-1719
For a capacitor with defined geometry, dimensions, and dielectric material, the capacitance normally cannot be changed. In this work, we found the apparent capacitance can be significantly increased by adding one or more electrodes to the lateral sur
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 26:1527-1531
Alumina ceramics are often used as vacuum electrical device insulators owing to their excellent properties, high hardness quality, high heat resistivity, and high insulation and low gas desorption properties. As alumina is chemically stable, directly