User's Manual

Table Of Contents

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 lists 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

≤ 3x 10

(no visible dust accumulated

on a workbench in three

days)

Suspending dust

mg/m

≤0.2

Precipitable dust

mg/m

·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.

AP3x10xN&5x10xN&5x30xN&6x10xN&7x10xN

Hardware Installation and Maintenance Guide

5 Appendix

Issue 12 (2015-08-05) Huawei Proprietary and Confidential