Lexicon: D
Degree of soiling
Contamination from the ambient conditions, combined with moisture, can affect the conductivity of operating materials or the insulation capacity of the surface. The degree of contamination has an influence on the component design via the creepage distance. Low degree of contamination: in air-conditioned or clean, dry rooms, such as computer systems. High degree of soiling: in open-air or outdoor areas, such as equipment on the roofs of locomotives or trams. The degree of soiling is used to categorise air and creepage distances. In industrial environments, the degree of contamination is typically 3 (below 1-4). (All data without guarantee)
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