Analysis of Leakage Current and Insulator Resistivity for Quality Assurance of Medium Voltage Network Polymer Insulators Alumina - SiO2 in Tropical Climate Simulator Room

The tropical climate of Indonesia, which has moderately high rainfall, an impact on the output outdoor insulators. presence chemical particles, pollen, and salt in air will bind to insulating material's outer surface settle, resulting crystallization that allows roughness increase. One insulators are being produced is insulator made epoxy resin. injection fillers used further improve durability resin installed climatic conditions. Epoxy from bisphenol A-epichlorohydrin polyaminoamide combined with silane, alumina, SiO2 as research materials. parameters examined were leakage current resistance insulation. use silane a hardener also resistivity insulator, makes it more difficult flow or reduces current. Alumina well-known for solid heat voltage insulator. addition material increases insulator's mechanical strength form tensile compressive strength. With fluctuations temperature humidity, artificial environment replicated test chamber. value increase humidity. correlation between humidity insulation inversely proportional, higher applied lower resistivity. same refers relationship At 11 kV, 60%, variation 25oC, up 9.2 uA than factory-made SiR resistivity's number already good protected range such can be reproduce.