ZnO-Bi2O3-based varistor ceramics prepared by direct high-energy ball milling of the dopants [PDF]
The microstructure and electrical properties of ZnO-Bi2O3-based varistor ceramics prepared by direct high-energy ball milling of the dopants were studied.
Ye, Xiao +4 more
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Effect of soda lime silica glass doping on ZnO varistor ceramics: dry milling method
There is a lack of reports where dry milling methods have been used in the preparation of varistor based ceramics. Dry milling methods have been demonstrated to be able to produce fine and homogeneous sample powders.
Nur Quratul Aini Ismail +2 more
doaj +1 more source
Influence of Fine Crystal Percentage on the Electrical Properties of ZnO Ceramic-Based Varistors
Herein, the effect of nanocrystal percentage in bulk-ZnO varistors was studied. The structure of ZnO nanocrystals was examined using X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM).
Abdullah Aljaafari, Ahmed Sedky
doaj +1 more source
External Leakage Current Separation to Determine Arrester Condition Due to Contamination
Leakage current measurements can be used to determine the aging condition of the ZnO arrester. The leakage current that occurs in the arrester is divided into two, namely external and internal leakage currents.
Novizon Novizon +4 more
doaj +1 more source
Surface Flashover in 50 Years: III. Extreme Environments and Industrial Challenges
ABSTRACT Modern high‐voltage electrical equipment operates in complex environments where surface conditions are subjected to multifaceted influences from electric fields, thermal gradients, contaminants, irradiation and other extreme environmental factors.
Zhen Li +6 more
wiley +1 more source
Interfacial space charge between ZnO varistor ceramics and coatings [PDF]
The interfacial space charge distribution between ZnO varistor ceramics and different collar coating materials was investigated using the Pulsed Electroacoustic Method (PEA) and Thermal Stimulated Current (TSC) methods. The experimental results show that
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Stability of ZnO-Pr6o11-Cr2O3 varistor ceramics against electrical degradation [PDF]
The vulnerability of varistor ceramics to electrical degradation during operation not only affects their nonlinear properties but also leads to shortening of device’s lifetime by increasing the risk of failures including melting, fire or even explosions.
Rahman, Md. Mahmudur +4 more
core +1 more source
Microstructure engineering to drastically reduce the leakage currents of high voltage ZnO Varistor ceramics [PDF]
[EN] The energetic losses associated with the leakage currents can represent a serious problem for the efficient performance of ZnO-based varistor ceramics.
Caballero Cuesta, Amador +5 more
core +3 more sources
Simulation‐Based Material Design for HVDC Cable Accessories
ABSTRACT The worldwide increasing demand for electricity, coupled with the need for more reliable infrastructures and more interconnected networks, has put forward high voltage direct current (HVDC) technologies for energy transmissions. Questions still arise as regards synthetic insulation for cable systems and accessories, as it remains one of the ...
Thi Thu Nga Vu +2 more
wiley +1 more source
Penghasilan varistor ZnO melalui kaedah pencampuran konvensional dan pengelompokan induk [PDF]
Varistor berasaskan zink oksida, ZnO telah difabrikasikan menggunakan teknik percampuran konvensional dan pengelompokan induk (PI). Kesan halaju pengisaran mesin pengisar bola planet (PBM) semasa proses penghomogenan dalam penghasilan varistor ...
Noor Azira, Mohd Noor
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