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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064


PORTELLA, Kleber Franke et al. Atmosferic pollution (coastal and industrial) effects on electric energy distribution insulators in Salvador, Brazil, metropolitan region. Quím. Nova [online]. 2008, vol.31, n.2, pp.340-348. ISSN 0100-4042.

The performances of eight kinds of insulators from electrical distribution lines in Salvador-BA, Brazil, were evaluated considering the chemical and physical local environmental pollution. The parameters that were chosen as characteristic for the insulators' properties were leakage current and partial electrical discharge. A data storage processing system and a communication link to the lab were built for data acquisition. The results show that the main contribution to the poor performance of the insulators is settleable magnetite particulate matter on the insulator in addition to the long term wetness time, t4.

Keywords : electrical insulator; environmental pollution; physicochemical characterization.

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