Thermal Characteristics As Diagnostic Tools To Determine Surface Condition Of Polymeric Insulation Material

Ahmad Faiz, Ahmad Morly (2015) Thermal Characteristics As Diagnostic Tools To Determine Surface Condition Of Polymeric Insulation Material. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

High voltage insulation technology has undertaken continuous development and improvement over time, from ceramics to synthetic polymer composite insulating material. Although synthetic polymer composite have several advantages compared to ceramics, but their ageing or long term performances is still lacking. A lot of studies have been conducted by the researchers in terms of their surface condition, ageing performance and leakage current signal as diagnostic tools. In this study, High Density Polyethylene thermoplastic polymer is choosing as material under study. In order to determine the surface condition of the composite insulation material, the test specimen are subjected to tracking and erosion conducted. The test under standard test is complied with International Standard Inclined Plane Tracking Test (IPT) BS EN 60587 : 2007. IPT is used to simulate leakage current on initial and continuous tracking voltage. Instead of LC parameters, this study focuses on identifying its thermal characteristics as analytical tools to determine surface condition of polymeric insulation material. In addition, the thermal profile of the sample during the tracking process is analyzed based on thermal images captured by an IRISYS IRI – 4010 infrared thermal imager. The correlation between visual observations of damage, the leakage current and thermal behaviours of test specimens under constant voltage stressed is investigated. From the results, it can be concluded that thermal characteristic of the tracking and erosion can be used as diagnostic tools to determine its surface condition.

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