نتایج جستجو برای: varistor
تعداد نتایج: 218 فیلتر نتایج به سال:
BACKGROUND In fabrication of ZnO-based low voltage varistor, Bi2O3 and TiO2 have been used as former and grain growth enhancer factors respectively. Therefore, the molar ratio of the factors is quit important in the fabrication. In this paper, modeling and optimization of Bi2O3 and TiO2 was carried out by response surface methodology to achieve maximized electrical properties. The fabrication w...
High-energy surge tests have been pe$ormed on metal-oxide varistors of a type in common use, according to a proposed ZEC standard derived from German Standard W E 01 60. l%e surge generator used for the test was a prototype commercial device developed especially to deliver the 1000300 ps waveform speczjied by W E Standard 0160. Depending on the position of the varistor within its manufacturing ...
This paper presents the protective effects of shield wire coupled with Metal Oxide Varistor (MOV) arresters in a distribution network located in a severe lightning area. The presented test case is the IEEE 34-node radial distribution test feeder injected with multiple lightning strokes and simulated with the Alternative Transients Program/ Electromagnetic Transients program (ATP/EMTP). The resp...
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