Study or polymeric material characteristics on covered conductors used in Brazil

Pinheiro, Walter; Nachvalger, E.E.; Oliveira, Jadson José Souza de; Caron, L.E.; Castro, A C Meira; Faria, Roberto Mendonça; Oliveira, R. B. L.; Dirani, Ely Antonio Tadeu; Fonseca, Fernando Josepetti; Andrade, Adnei Melges de

doi:10.1109/ceidp.1996.564716

Cited by 1 publication

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“…The higher levels of individual parameters characterize a tropical environment in case of humidity [6]. Despite of intensive testing and field research, crucial parameters for tropical conditions were not precisely determined in all scientific publications [8,10]. Moreover, in some publications the UV radiation was noted as specific parameter to tropical conditions [9] in addition to a high humidity and thunder storms only [14], whereas other authors also include wind speed and direction [15].…”

Section: Cclassification Of Tropical Conditionsmentioning

confidence: 95%

“…Humidity also plays an important factor for corrosion accompanied by moss and fungi layers [7]. Research related to material behavior, in particular insulation availability of covered conductors was performed in Brazil [8], while it was studied for silicone rubber in Indonesia [9]. Insulators exposed to clean and polluted conditions were investigated in Sri Lanka and Tanzania [10][11].…”

Section: A Research Regarding Tropical Atmosphere (Fig2)mentioning

confidence: 99%

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Impact of various harsh environmental conditions on the long term behavior of electrical joints

Dreier

Großmann

2012

26th International Conference on Electrical Contacts (ICEC 2012)

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The expanding generation and transmission of renewable energies causes an enhanced deployment of power connections under severe operating conditions. These technical and climate based operating conditions are classified as extreme conditions. Over the lifetime of electrical joints, ageing processes take place after a certain time which is often beyond a time period not indicated by short term investigations (t < 1000 h). As a consequence, joint resistance increases which inevitably results in increased power losses as well as a rise of the joint temperature. To bring these points together, long term investigations with respect to ageing processes and lifetime will be performed. As part of extreme conditions, experimental results of electrical connectors under industrial atmosphere will be presented. Further proposed tests of tropical rain forest conditions are discussed whereas power connections will exposed to seasonal affective ambient temperatures up to 50 °C with an atmosphere of 95 % of relative humidity.

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