Abstract
Epoxy resin mixed with rice husk ash and quartz powder increases its dielectric strength. This paper presents the dielectric properties of the press board coated with this epoxy mixture. In this work, the press board, which is used in the transformer, is coated with three components: epoxy resin, rice husk ash, and quartz powder. The nanometer‐sized quartz powder and rice husk ash are mixed in the particular ratio with the epoxy resin. The mixture of epoxy resin, quartz powder, and rice husk ash is coated on both sides of the press board. The dielectric constant, volume resistivity, and Tan Delta (dissipation factor) of the coated press board are compared with the noncoated press board. The results reveal that the coated board is having high dielectric constant and volume resistivity when compared to the noncoated board.
Highlights
Insulators play a major role in electrical power transmission and distribution system
When the board is coated with epoxy resin, the moisture absorption can be reduced [18]. is paper reports on testing of the dielectric property and resistance of the insulating material. e difference in our insulating material is that we used the combination of rice husk ash, quartz powder, and epoxy resin coated on the press board
Materials required for preparing the specimen are press board, epoxy resin, rice husk ash, and quartz powder. e chemical structure of the materials and their properties are discussed first
Summary
Insulators play a major role in electrical power transmission and distribution system. In high-voltage power apparatuses, epoxy resin is used extensively because of its exceptional insulating behavior towards electricity, extraordinary resistance to heat, and good mechanical properties. The transformer press board is coated with three different materials: epoxy resin, rice husk ash, and quartz powder.
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