A New Concept Varistor With Epoxy/Microvaristor Composite

Author

Ishibe, Shinji ; Mori, Marco ; Kozako, Masahiro ; Hikita, Masayuki

Author_Institution

Kyushu Inst. of Technol., Kitakyushu, Japan

Volume

29

Issue

2

fYear

2014

fDate

Apr-14

Firstpage

677

Lastpage

682

Abstract

A new concept composite varistor is proposed in this paper. This composite varistor has the chains of microvaristors, which are formed by applying an electric field during the curing process and work as current paths. This composite varistor shows superior nonlinear voltage-current characteristics despite small microvaristor content and has a good response against a steep voltage surge of several tens of nanoseconds in front time. In comparison with ceramic varistors where shapes are usually formed at their sintering temperatures of around 1000°C, the composite varistor has an advantage in flexible shape because its shape is formed by curing the base polymer at a low temperature.

Keywords

composite materials; curing; electric fields; resins; varistors; base polymer; ceramic varistors; curing process; current paths; electric field; epoxy resin; epoxy-microvaristor composite; new concept composite varistor; nonlinear voltage-current characteristics; sintering; steep voltage surge; Curing; Epoxy resins; Force; Mathematical model; Shape; Surges; Varistors; Arresters; composite; epoxy; microvaristors; nonlinear characteristics; varistors;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2013.2281850

Filename

6623190