Figure 5-80 Internal partition wall inside the equipment room
Equipment Room Environment
Dust on devices may cause electrostatic discharge and result in poor contact for connectors or
metal connection points. This problem can shorten the life span of devices and cause faults.
The equipment room must be free from explosive, conductive, magnetically-permeable, and
corrosive dust. Table 5-11 shows the requirement for dust concentration in the equipment room.
Table 5-11 Requirements for dust particles in the equipment room
Mechanical active
material
Unit Concentration
Dust particle
Particle /m
3
≤ 3x 10
4
(no visible dust accumulated
on a workbench in three
days)
Suspending dust
mg/m
3
≤0.2
Precipitable dust
mg/m
2
·h
≤1.5
Description
l Dust particle diameter ≥ 5 µm
l Suspending dust diameter ≤ 75 µm
l 75 µm ≤ precipitable dust diameter ≤ 150 µm
Take the following measures to meet the requirements:
l Use dustproof materials for ground, wall, and ceiling construction.
Huawei AP3x10xN&5x10xN&5x30xN&6x10xN&7x10xN
Hardware Installation and Maintenance Guide
5 Appendix
Issue 11 (2015-05-18) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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