Due to the large number of tests executed, only the results for superficial pollution will be shown here. Results for the other cases can be obtained with the authors. Fig. 8 and Fig. 9 show, respectively, the thermal image and the temperature profile for arrester before it was submitted to the pollution. For the creation of the temperature profile graphs, a normalized temperature was considered, i.e., the values shown in the graphs correspond to the measured values of temperature divided by the lower value of temperature obtained for the equipment in analysis. This normalization is necessary so that a pattern for the values in the graphs is created, making possible a comparison among different graphs. Without the normalization, the gotten values of temperature in each assay would be very different, disabling an adequate comparative degree. Fig. 10 and Fig. 11, show the thermal images and temperature profile for the same arrester in Fig. 8, after the application of salty fog.