The modern electrical industry in Indonesia faces escalating energy demands, projected to reach 1,413 Terawatt Hours by2060. Meeting these demands necessitates enhancing the quality of electrical transmission systems, particularly insulators, witha fo...
The modern electrical industry in Indonesia faces escalating energy demands, projected to reach 1,413 Terawatt Hours by2060. Meeting these demands necessitates enhancing the quality of electrical transmission systems, particularly insulators, witha focus on local materials to reduce dependency on imports. Porcelain Alumina Ceramic Insulators (PACI) offer promisingalternatives due to their high resistivity and mechanical strength. This study investigates PACI synthesis using locally sourcedmaterials: kaolin, ball clay, alumina, and feldspar. Chemical analysis confirms alumina as the primary component (99.7%Al2O3), while other materials contribute to silica content. Fabrication involves crushing, drying, grinding, sieving, and sinteringat 1280 °C, yielding specimens (K1S, K2S, K3S). Material characterization employs XRD, XRF, SEM and electrical testsreveals phase compositions, morphological changes, and electrical properties. K3S, rich in feldspar, exhibits superior materialstrength (74.62 N/mm²) and hardness (190 N/mm²) with limited conductivity. Utilizing local resources for PACI productionpromises economic benefits and reduces import dependence. This study illuminates the interplay between material compositionand resulting properties, offering insights into ceramic synthesis for improved electrical infrastructure.