Scholarly record
NEW IMPROVEMENTS TO THE MANUFACTURING PROCESS OF METAL OXIDE VARISTORS
Abstract
Metal Oxide based Varistors are basically ceramics, acting as n ? semiconductors, having a poly-crystalline and dense structure. The main application of these power electronic devices is for construction of overvoltage protection equipment (for every voltage level), because of some advantages like: an increased level of non-linearity between the current and the voltage characteristic, a high energy adsorption capacity and an excellent good response time, which make them ideal for protecting other sensible electronic devices and circuits, as well as large segments of power lines. This paper presents a new material and some manufacturing technology aspects for a Metal Oxide Varistor based on a new mixture of oxides used in order to obtain a new ceramic with higher non-linear electric properties. The two oxides involved are Cr2O3 and MnO2 as dopants or additives. All measurements of the electrical performances will be carried out in relation with existing 5 dopants material.
Publication Impact Profile
Publication details
References6
Fakkar A., Bui Ai, Loubiere A., Penchenat G., (1993) „Modelisation thermique des varistances à base d`Oxide de zinc”, Revue générale de l`Electricité, Paris, France, no.1,
Frigura-Iliasa F.M., (1998), Contribution à l`étude de l`amélioration de la tenue en énergie des varistances, Mémoire présenté en vue d`obtenir le diplôme d`ingénieur de l`U.P.T., Toulouse, France,
Nishiwaki, S., Andoh, H., (2000), “Failure Mechanisms and Recent Improvements in ZnO Arrester Elements”, IEEE Electrical Insulation Magazine, Vol. 16, No. 1, January / February
Wang, H., a.o., (1998), „Nonuniform Heating in Zinc Oxide Varistors Studied by Infrared Imaging and Computer Simulation”, Journal of American Ceramic Society, Vol. 81, No. 8, August
Bajenescu T.M., Bazu M., „Component Reliability for Electronic Systems”, Artech House, London, 2009.
Tarfulea, N.; Frigura-Iliasa, F. M., Vatau D., Andea Petru, Balcu Florin, Macarie Amalia, “A new Algorithm for the Design of Metal Oxide Varistor Surge Arresters”, Proceedings of the 2016 IEEE 16TH International Conference on Environment and Electrical Engineering (EEEIC), Florence, Italy, June 7-10, 2016.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
