[KSCI] Korea Science Citation Index Service

A Study on the Properties of 36,000lb Porcelain Insulators by Contained Alumina of Raw Materials

Choi In-Hyuk (Transmission Technology Group, KEPRI)
Choi Jang-Hyun (Transmission Technology Group, KEPRI)
Jung Yoon-Hwan (Transmission Technology Group, KEPRI)
Lee Dong-Il (Transmission Technology Group, KEPRI)

Publication Information

KIEE International Transactions on Electrophysics and Applications / v.5C, no.1, 2005 , pp. 8-13 More about this Journal

Abstract

In order to analyze the properties of domestically produced 36,000lb porcelain insulators by change of the alumina addition to raw materials, 36000lb ball socket type suspension insulators that were manufactured in 1989, 1995 and 2001 were removed from transmission lines and an experiment was performed. The results indicated that 8 [wt.%] alumina, which influences the mechanical properties and arc resistance properties in the case of insulators that were manufactured in 1989 was contained, and the relative density and the fracture toughness of insulators appeared by 94.2% and 1.4 [MpaㆍM/sup 1/2/], respectively. However, 12 [wt.%] alumina was contained in the case of insulators that were manufactured in 1995, and the relative density and the fracture toughness of insulators appeared preferably lower by 92% and 1.3 [MpaㆍM/sup 1/2/], respectively. The greatest amount of alumina was contained by 17 [wt.%] in the case of insulators that were manufactured in 2001. It was confirmed that the electrical and mechanical characteristics such as the relative density and the fracture toughness appeared remarkably by 96% and 1.7 [Mpaㆍm/sup 1/2/], respectively.

Keywords

Alumina; Fracture toughness; Porcelain insulator; Relative density; Tanδ;

Citations & Related Records

Reference

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