Zobrazeno 51 - 60
of 507
pro vyhledávání: '"01"'
Autor:
Gordon Wilson, Mohd Shahril Ahmad Khiar, G. John Langley, Paul Lewin, James Pilgrim, Sergio Garcia, Richard C. D. Brown
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1787-1794
This paper introduces the use of thin film copper strips as a potential approach for online quantification of corrosive sulphur content in transformer insulating oils. The progression of sulphur corrosion is tracked by means of the changes in resista
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1516-1524
In this article, two synthetic esters along with a natural ester are investigated to monitor the generation of colloidal and dissolved decay particles under thermal aging. The thermal aging of the oils is carried out as per a modified ASTM D1934 in t
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1492-1500
This study shows that TiO 2 nanofiller and cetyl trimethyl ammonium bromide (CTAB) surfactant in ester oil demonstrates higher corona inception voltage under AC and DC voltages. Flow electrification studies with nano fluid adopting the spinning disk
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
Autor:
Manju Mishra Patidar, R. Nath, Prakash Behera, Padmanapan Saravanan, Vinay Kausik, V. Ganesan, Deepti Jain
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1469-1473
A simple versatile way of producing mini electret pieces with a handheld corona charging device is reported here. Its adaptability and suitability are demonstrated using a PVDF polymer. A quantitative assessment of the electret pieces is made by prob
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1433-1439
In this work, we propose a compound electret-system with improved hydrophobicity and charge stability in water and at elevated temperatures by bonding a solid fluorinated-ethylene-propylene (FEP) film to a porous polytetrafluoroethylene (PTFE) film.
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1395-1399
In this work, the local current-voltage characteristics of nanocomposite phase boundaries in the form of a poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) (70/30) matrix filled with conductive polyaniline (PANI) particles are studied by condu
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1538-1545
This article deals with the application of synthetic ester for drying cellulose insulation of distribution transformers. The most important advantages and disadvantages of the commonly used methods of drying transformer insulation on site are discuss
Autor:
Shengli Li, Chen Chen
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1724-1727
This paper presents an improved method for detecting methanol and the concentration of methanol in transformer oil-paper. Acetonitrile is used as an extractant, and methanol is detected by gas chromatography-mass spectrometry. Experiments show a line
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1627-1635
This study presents experimental results on the influence of cellulose particles on the breakdown characteristics of transformer oil in a highly non-uniform field under lightning impulse voltage. The experimental results show that as the particle con