Penelitian ini bertujuan untuk mengetahui pengaruh polutan semen dan garam pada isolator porselen dan gelas dalam kondisi kering dan basah. Metode yang digunakan pengujian withstand dan breakdown isolator terhadap polutan semen dan garam dalam kondisi kering dan basah. Berdasarkan hasil penelitian, kedua isolator masih dapat tahan terhadap flashover dengan kadar polutan terendah s.d. tertinggi. Pada pengujian breakdown untuk isolator porselen, polutan garam kering (10 gram) 84,96 kV;0,00 mA, (140 gram) 57,67 kV;0,00 mA dan polutan garam basah (10 gram) 82,53 kV;0,00 mA, (140 gram) 51,56 kV;0,03 mA. Polutan semen kering (10 gram) 60,39 kV;0,02 mA, (100 gram) 29,97 kV;0,13 mA dan polutan semen basah (10 gram) 58,47 kV;0,05 mA, 100 gram 15,10 kV;0,13 mA. Bila dibandingkan dengan isolator gelas, polutan garam kering (10 gram) 77,89 kV;0,00 mA, (140 gram) 48,13 kV;0,01 mA dan polutan garam basah (10 gram) 71,11 kV;0,00 mA, (140 gram) 40,11 kV;0,06 mA. Polutan semen kering (10 gram) 56,21 kV;0,03 mA, (100 gram) 20,15 kV;0,14 mA dan polutan semen basah (10 gram) 53,81 kV;0,06 mA, (100 gram) 5,71 kV;0,14 mA. Hasilnya menunjukkan bahwa semakin banyak kadar polutannya maka tegangan breakdown semakin menurun dan nilai arus bocor akan semakin besar. Untuk menjaga kualitas isolasi perlu dilakukannya pemeliharaan.

This study aims to determine the effect of cement and salt pollutants on porcelain and glass insulators in dry and wet conditions. The test method used is to withstand and breakdown the insulator against cement and salt pollutants in dry and wet conditions. Based on the results of the study, both insulators can still withstand flashover with the lowest pollutant levels up to s.d. highest. In the breakdown test for porcelain insulators, dry salt pollutants (10 grams) were 84.96 kV;0.00 mA, (140 grams) 57.67 kV;0.00 mA and wet salt pollutants (10 grams) 82.53 kV; 0.00 mA, (140 grams) 51.56 kV;0.03 mA. Dry cement pollutants (10 grams) 60.39 kV;0.02 mA, (100 grams) 29.97 kV;0.13 mA and wet cement pollutants (10 grams) 58.47 kV;0.05 mA, 100 grams 15.10 kV;0.13 mA. When compared with glass insulators, dry salt pollutants (10 grams) are 77.89 kV;0.00 mA, (140 grams) 48.13 kV; 0.01 mA and wet salt pollutants (10 grams) 71.11 kV;0 ,00 mA, (140 grams) 40,11 kV;0,06 mA. Dry cement pollutants (10 grams) 56.21 kV;0.03 mA, (100 grams) 20.15 kV;0.14 mA and wet cement pollutants (10 grams) 53.81 kV;0.06 mA, (100 grams) 5.71 kV;0.14 mA. The results show that the higher the pollutant content, the lower the breakdown voltage and the higher the leakage current. In order to maintain the quality of the insulation, it is necessary to carry out maintenance.