Dielectric performance of different types of polymeric material under standard test procedures

Muhammad Azwadi , Abdullah (2014) Dielectric performance of different types of polymeric material under standard test procedures. Project Report. UTeM. (Submitted)

Text Dielectric Performance of Different Types of Polymeric Material under Standard Test Procedures 24pages.pdf Download (452kB)

Abstract

High voltage insulation technology has undergone continuous development and improvement over time, from the shelves of ceramics to polymer composite insulating synthetic material. Some research has been done, but still has room to improve the performance of insulating polymer. A synthetic polymer is widely used in high-voltage insulation and was divided into two parts which is thermoplastic and thermoset materials. This study focuses on the performance thermoplastic materials as high-voltage insulation materials. In this study the thermoplastic polymeric material has been selected are high density Polyethylene (HDPE), Polypropylene (PP), and Polyvinyl Chloride (PVC). Among the basic needs to examine and evaluate the performance of selected materials as external high voltage applications is its dielectric strength level. In determining the dielectric strength of the selected material, breakdown test on the specimen was conducted. The test parameters, dimensioning and condition of the specimen prepared based flat sheet material testing accordingly to international standard BS EN 60243-1:1998. The experiment was carried out by complying test methods for determining the strength of the long-term solid electrical insulating materials at power frequencies of 50 Hz. From the analysis carried out, both Polypropylene (PP) and High Density Polyethylene (HDPE) meet the requirements of the breakdown field strength of the polymer. However, Polyvinyl Chloride (PVC) has the lowest value of the breakdown voltage and the breakdown of this polymer does not comply with the request, which must exceed the minimum requirement of 10 KV/mm with reference to the international standard BS EN 62039: 2007. Then, this breakdown results can be used to determine the characteristic of processing variables, aging condition, and other manufacturing or environmental situation in high voltage polymeric insulation application.

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