Aspects concerning the influence of environmental factors in infrared monitoring of electrical equipment

This paper presents the influence of the environmental factors over the electrical equipment thermal stresses when it is monitored with infrared monitoring device. A good definition of the correction parameters for this monitoring device and the choice of the optimal conditions for monitor performing can lead to good results. In particular, the paper presents the influence of the dust layer from electrical equipment over the captured thermal image by the infrared monitoring device and further more to estimate its thermal stress. To achieve this, it was used an experimental stand where a copper bar was split in different areas and they were covered with different dust types and in the end the thermal stress of each area was estimated with the infrared monitoring device.