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Pollution Degree 1: No pollution or only dry, nonconductive pollution occurs. The pollution has no effect.

Pollution Degree 2: Normally only nonconductive pollution occurs. Temporary conductivity caused by condensation is to be expected.

Pollution Degree 3: Conductive pollution or dry nonconductive pollution that becomes conductive due to condensation occurs. To be found in industrial environment or construction sites (harsh environments).

Pollution Degree 4: The pollution generates persistent conductivity caused by conductive dust, rain, or snow.

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11y ago

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