(Pollution Degree) EN 61010-1:2010 specifies
pollution degrees and their requirements as
follows. The GPP Series falls under degree 2.
Pollution refers to “addition of foreign matter,
solid, liquid, or gaseous (ionized gases), that
may produce a reduction of dielectric strength
or surface resistivity”.
Pollution degree 1: No pollution or only dry,
non-conductive pollution occurs. The pollution
has no influence.
Pollution degree 2: Normally only non-
conductive pollution occurs. Occasionally,
however, a temporary conductivity caused by
condensation must be expected.
Pollution degree 3: Conductive pollution
occurs, or dry, non-conductive pollution occurs
which becomes conductive due to condensation
which is expected. In such conditions,
equipment is normally protected against
exposure to direct sunlight, precipitation, and
full wind pressure, but neither temperature nor
humidity is controlled.
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