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Epoxy resin is widely used in high voltage apparatus as insulation due to its excellent mechanical, electrical and chemical properties. In recent years, researches on epoxy resin/nanocomposites have shown that the presence of nano-size filler in epoxy resin system can improve electrical, thermal and mechanical properties significantly. In the present paper, the epoxy resin containing nanosize SiO2...
The model bars of generator stator winding manufactured under resin poor process and laminates made using both resin rich and resin poor systems were subjected to accelerated electrical, thermal and combined stress ageing. The insulation curing status and behaviour on ageing was studied by thermo analytical techniques like differential scanning calorimeter (DSC), thermo gravimetric analysis (TGA)...
The low-frequency dielectric response of polymeric materials, typically in the range of 10-5 to 102 Hz at room temperature, is related to various phenomena. Direct conduction, quasi DC conduction also known as low-frequency dispersion, alpha dipolar relaxation mechanisms, which are located in the low-frequency part of the spectrum for glassy polymers, are included in these phenomena and appeared generally...
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