Fig. 5From: Impact of volcanic ash from Cotopaxi-2015 and Tungurahua-2016 eruptions on the dielectric characteristics of suspension insulators, Ecuadora Fresh volcanic ash blanketing the insulator surface (bottom and top), b Flashover during the test under ash contamination and moist conditions in the fog chamber, c residual ash on the glass ANSI 52–3 insulator after testingBack to article page