Results 91 to 100 of about 2,517,738 (175)
Gaoya dianqi, 2023 金属氧化物压敏电阻（metal oxide varistor,MOV）广泛应用于各种直流断路器中，用于抑制过电压、系统能量耗散与开断电压建立。受目前加工工艺限制，单MOV阀片通流能力有限，故断路器中多采用多柱并联结构。柱间电流分配不均会导致局部阀片超负荷耗能，造成开断失败甚至设备损坏。文中基于实验测量建立了一种直流开断工况下的MOV电气模型，基于该模型提出了MOV阀片均流选配方法。经实验验证，传统基于雷电冲击测试方法选配的MOV在直流开断工况的均流特性不能完全满足要求 ...
龙辰 +7 more
doaj
Effect of sintering temperature on structural and electrical properties of silica doped zinc oxide based varistor / Nur Farhaim Abdul Rasul [PDF]
, 2017 The effect of sintering temperature on the structural and electrical properties of silica doped zinc oxide, Si-doped ZnO based varistor have been investigated. The Si-doped ZnO with composition x [SLS] 100-x [ZnO], x= 3 wt.
Abdul Rasul, Nur Farhaim
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STUDY ON SURGE ARRESTER PERFORMANCE DUE TO LIGHTNING STROKE IN 20 KV DISTRIBUTION LINES
Teknik, 2012 Electric energy has been transmiting from power station to end user with transmission and distribution lines.Lightning strokes are problems that occure in transmission and distribution lines and make them fault when theelectric energy were transmited ...
Agung Warsito +2 more
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CSEE Journal of Power and Energy SystemsEnvironmental issues associated with the aviation industry are getting more attention as air traffic increases. Stringent standards are imposed for fuel consumption and pollution emissions for next-generation aircraft.
Muhammad Junaid +5 more
doaj +1 more source
The study of voltage-current characteristic of lightning impulse to the metal-oxide varistor
, 2011 Access is limited to UniMAP community.This project studies the voltage-current (V-I) characteristic of lightning impulse to the metal-oxide varistor (MOV). MOV is widely used in the low voltage equipment for protection from lightning surge.
Lim, Hooi Hoon
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Processing of zinc oxide varistors : sources of defects and possible measures for their elimination
, 1997 The processing of ZnO varistors primarily follows the conventional ceramic route. A number of dopants are added to zinc oxide powder to prepare the constituent material and some additional finishing operations are performed for securing the varistor ...
Karim, A. N. Mustafizul +2 more
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Gaoya dianqi, 2014 结合串联补偿装置的工作原理,仔细分析了金属氧化物限压器（metal oxide varistor,MOV）的工况,比较了TCSC与FSC不同构成的串联补偿装置中MOV的特点,对MOV的过电压保护和控制措施进行了较深入的讨论、总结。对设计MOV的关键技术——保护水平、能量耐受和工频电压稳定性、电流分布、特殊的短路电流释放能力等进行了深入研究。笔者根据国内某一500 kV交流电力系统串补工程的招标技术要求,设计了复合外套和瓷外套不同结构的MOV,产品通过了中国电力科学研究院的型式试验,满足工程需要。
赵冬一 +5 more
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IEEE AccessThis study presents an experimental evaluation of surge protection performance of a LED road luminaire subjected to standardized 8/ $20\mu $ s impulse stress.
Vasilios P. Androvitsaneas
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IEEE Open Journal of the Industrial Electronics SocietyMetal oxide varistor (MOV) is a nonlinear resistive element whose resistance decreases rapidly when the applied voltage exceeds a threshold value. A dc solid-state circuit breaker (SSCB) uses MOVs or MOV with resistor-capacitor-diode (RCD) snubber ...
Seong Jin Lim +3 more
doaj +1 more source
Effect of sintering temperature and heat treatment on electrical properties of indium oxide based ceramics [PDF]
, 2008 Indium oxide based ceramics with bismuth oxide addition were sintered in air in the temperature range 800-1300 ºC. Current-voltage characteristics of In2O3-Bi2O3 ceramics sintered at different temperatures are weakly nonlinear.
Bulpett, R +5 more
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