A Appendix
A.1 Operating Environment
Environments subject to atmospheric corrosion can be classied into four
categories:
Table A-1 Application environment description
Category
Environment Denition
Class A Controlled environment. Indoor environment where the ambient temperature
and humidity are controlled (including rooms where people live) and the
relative humidity of air is controlled below 65%.
Class B Uncontrolled environment. Indoor environment where the ambient temperature
and humidity are not controlled or outdoor environments (with simple shielding
measures) where the humidity can reach 100%.
Class C Hash environment. Outdoor land environment (with simple shielding measures)
near seas or pollution sources. If a site is near a sea, it is 0.5–3.7 km away from
the sea. If a site is near a pollution source, it is at most 3.7 km away from 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, or 1 km away from light
pollution sources such as packing houses, tanneries, and boiler rooms.
Class D Oceanic environment. Outdoor land environment (with simple shielding
measures) at most 500 m away from the seashore or environment on the sea.
PowerCube 1000 (STC, Saudi Arabia, ICC800-A1-C2,
ESC800-A1)
Installation Guide A Appendix
Issue 02 (2021-09-28) Copyright © Huawei Technologies Co., Ltd. 146
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