T&D World Magazine

High-Voltage Surge Protective Devices' Recent Developments

The Surge Protective Devices Committee hosted a paper and Q&A session on Wednesday, May 9, involving the advancement of technologies for the design and testing of line surge arrestors, non-gapped line arrestors, and externally gapped line arrestors.

First, the highly anticipated, recently released IEC Standard 60099-8 on Surge Arrestors (Part 8: Metaloxide surge arresters with external series gap for overhead transmission/distribution lines of a.c. systems above 1 kV) was examined in detail. This presentation provided in-depth information on the testing of these devices and the proper application of the standard. Secondly, new advancements in the area of ultra-high gradient Zinc Oxide technology, which allow for the design and development of smaller, more compact LSAs was presented. With operating voltages of up to 600V/mm, the development of these devices was discussed, including methods of controlling the grain size and optimizing the manufacturing process of the ZnO element.

PAPERS AND AUTHORS:

2012TD0437
Externally Gapped Line Arresters

2012TD0170
Development of GIS type Surge Arrester applying Ultra High Voltage Gradient ZnO Element

  • T. FUKANO, TOSHIBA Corp.
  • M. MIZUTANI, TOSHIBA Corp.
  • Y. KAYANO, TOSHIBA Corp.
  • Y. KASUGA, TOSHIBA Corp.
  • H. ANDOH, TOSHIBA Corp.

In case you missed it, full conference registrants will receive proceedings free of charge. Additional copies will be available for a fee.

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