TP48200A-DT19C1, TP48200A-DT19C2,
TP48200A-HT19C1 and TP48200A-HT19C2 Telecom
Power
User Manual
Copyright © Huawei Technologies Co., Ltd.
Class B environments refer to indoor environments in which the ambient temperature and humidity
are not controlled and outdoor environments (with simple shielding measures) where humidity can
reach 100%.
Class C environments refer to sea environments or outdoor land environments (with simple
shielding measures) near pollution sources. If a site is near a pollution source, it is at most 3.7 km
away from salt water, such as the sea and salt lakes, 3 km away from heavy pollution sources, such
as smelteries, coal mines, and thermal power plants, 2 km away from medium pollution sources,
such as chemical, rubber, and galvanization industries, and 1 km away from light pollution sources,
such as packing houses, tanneries, and boiler rooms.
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