Results 91 to 100 of about 457 (219)
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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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
doaj
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
doaj +1 more source
Detection of Failures in Metal Oxide Surge Arresters Using Frequency Response Analysis. [PDF]
Sensors (Basel), 2023 Zacarias TG +9 more
europepmc +1 more source
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
Pollution Performance of 110 kV Metal Oxide Arresters
, 2008 Pollution test results of single unit 110 kV metal oxide surge arresters with porcelain housing according to the solid layer and salt fog methods are presented.
Pohl, Z +3 more
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Degradation analysis of metal oxide varistors under harmonic distortion conditions [PDF]
, 2016 A thesis submitted in ful lment of the requirements for the degree Doctor of Philosophy in Electrical Engineering May 2016Modern electrical networks provide an opportunity for inevitable interaction between metal oxide arresters and power system ...
Bokoro, Pitshou Ntambu
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International Journal of Electrical Power & Energy SystemsThe DC fault is a serious challenge to voltage-source-converter-based HVDC (VSC-HVDC) systems, and the fault current limiter (FCL) is one of the key measures to solve the DC fault and reduce the capacity of the DC circuit breaker.
Ziao Yuan +4 more
doaj +1 more source
Degradation phenomena in Praseodymium Oxide-based Zinc Oxide varistor ceramics derived-through modified citrate technique [PDF]
, 2014 Current trend shows that Pr6O11 based ZnO ceramics are actively researched to overcome drawbacks in Bi2O3 based varistor materials. However, very little attention has been paid to evaluate the stability of these materials against DC degradation which ...
Wan Abdullah @ Wan Abd. Rahman, Wan Rafizah
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Degradación y recuperación de varistores de ZnO
Boletín de la Sociedad Española de Cerámica y Vidrio, 2006 In the present work it was studied the main aspect that influences on degradation and physical-chemical properties at grainboundary region of metal oxide varistors and its consequences on microstructure and nonohmic electric properties.
Ramírez, M. A. +3 more
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