Defects Detection in Electrical Insulators and Breaker for High Voltage by Low Cost Computed Radiography Systems

Nondestructive inspection of electrical insulators subjected to the high electrical stress and environmental damage is fundamental for reliable operation of a transmission lines and substations. At the present work, the glass and composite insulators used for several years in a transmission line and...

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Bibliographic Details
Published in:	E-journal of Nondestructive Testing Vol. 12; no. 10
Main Authors:	Shinohara, Armando H, Santana, Danilo M F, Oliveira, Pietro P J C, Silva, Rodrigo J G, Magalhaes, Otavio H, Silveira, Cidrack G, Khoury, Helen J
Format:	Journal Article
Language:	English
Published:	01-10-2007
Online Access:	Get full text
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Summary:	Nondestructive inspection of electrical insulators subjected to the high electrical stress and environmental damage is fundamental for reliable operation of a transmission lines and substations. At the present work, the glass and composite insulators used for several years in a transmission line and an oil controlled hydraulical breaker in substation were investigated by low cost computed radiography systems consisted of a portable X-ray of 270 kVp and 1.5 Ci of activity 1r-192 gamma-ray sources . For a better evaluation of glass and composite insulators, good insulators were also tested. As a result, the cracks and operation defects could be readily detected in the insulators and breaker, respectively.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 content type line 23
ISSN:	1435-4934 1435-4934