Results 81 to 90 of about 2,144 (172)
Influence of Partial Discharges on ZnO Varistors [PDF]
, 2008 The varistors used in HV overvoltage limiters are constantly exposed to operating voltage and environmental hazards and also to transient hazards associated with, among others, overvoltages or pollution.
Jaroszewski, M
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A Compact Air‐Cooled Totally‐Enclosed Integrated Motor Drive for Industrial Applications
IET Electric Power Applications, Volume 20, Issue 1, January/December 2026.This work presents a totally‐enclosed fan‐cooled integrated motor drive for industrial applications, in which the power converter is housed inside the motor and cooled using the existing fan, with a focus on the thermal behaviour and integration challenges. Using loss models and a combination of finite‐element and lumped‐parameter thermal analysis on a
Yentl Joos +3 more
wiley +1 more source
Hydrogen-induced degradation in SrTiO3-based ceramic varistors
, 2004 For ZnO-based ceramic varistors, it was found that the current leakage is largely increased by the reduction of hydrogen generated in nickel electroplating and electroless nickel plating.
Chan, H.L.W., Li, B.R., Chen, W.P.
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Influence of spinel phase composition on ZnO varistors properties
, 1998 The method of directed synthesis of the constituent phases (DSCP) was applied to investigate the influence of spinel phase composition on characteristics of ZnO varistors.
Uskoković, D +3 more
core +1 more source
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2014 Prolonged exposure of zinc oxide varistors to the electrical load leads to current-voltage characteristics (CVC) deformation, which is associated with a change in the height and width of the intergranular barriers, which are the main structural element ...
A. S. Tonkoshkur, A. V. Ivanchenko
doaj +1 more source
, 2010 This work presents the most relevant aspects of the SnO2 based varistors technology and a comparative study of its non linear behavior in relation to ZnO (modified Matsuoka system) varistors.
Longo, E. [UNESP] +5 more
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Investigation on the Performance of Metal Oxide Varistors in Energy meter [PDF]
, 2015 An Energy meter includes current and voltage input, a surge protection section, a measurement device. The measurement device will generate power consumption measurements based on current input and voltage input.
, Srinath kv, Dr. Andhe Pallavi
core +1 more source
Zinc oxide varistors made from powders prepared by wet chemical route
, 2001 Powders used to produce zinc oxide ceramic varistors were prepared, by wet chemical route. SEM and XRD were used to characterize the powder properties and the microstructure of the varistors.
Ji, Y. Z. +3 more
core
Influence Mechanism of Micro Grain-boundary Parameters to the Electrical Properties of ZnO Varistor
工程科学与技术ZnO varistors exhibit excellent nonlinear voltage–current characteristics and substantial energy capacity, enabling them to absorb impulse energy during power system overvoltages and thus protect the electrical equipment.
Pengfei MENG +6 more
doaj
PROCESSING AND CHARACTERIZATION OF LOW-VOLTAGE VARISTORS
, 1994 ZnO seed particles and Cr2O3 were used in this study to control the microstructure of ZnO varistors. The seed particles were prepared by adding 1.0 mol % BaO to ZnO. The powder was then calcined at 800-degrees-C for 2 h, pressed into pellets and sintered
Longo, Elson +3 more
core +2 more sources