Heat Dissipation Mode; Table 3-1 S3300 Heat Dissipation Modes - Huawei Quidway S3300 Series Hardware Description

3 Heat Dissipation System

3.1 Heat Dissipation Mode

This section describes the heat dissipation modes of the S3300.
The heat dissipation system ensures that the S3300 operates at a normal temperature. The
operating temperature of the S3300 is the long-term operating temperature in
Specifications.
The heat dissipation system of the S3300 can be in the following modes:
l
l
l
Table 3-1

Table 3-1 S3300 heat dissipation modes

Heat
Dissipati
on Mode
Natural
heat
dissipation
Intelligent
heat
dissipation
Forcible
heat
dissipation
The following table describes the air circulation through the S3300 chassis.
3-2
Natural heat dissipation
Intelligent heat dissipation
Forcible heat dissipation
provides the S3300 models corresponding to each heat dissipation mode.
Model
l S3328TP-SI
l S3328TP-EI
l S3328TP-EI-MC
l S3352P-SI
l S3352P-EI
l S3352P-EI-24S
l S3352P-EI-48S
l S3328TP-EI-24S
l S3328TP-PWR-EI
l S3352P-PWR-EI
NOTE
The fans of S3352P-EI-24S, S3352P-EI-24S, and S3328TP-EI-24S support Pulse Width Modulation
(PWM) speed adjustment.
The fans can work in the intelligent mode or forcible mode.
In the intelligent mode, the fans start to operate only when the ambient temperature goes higher than a
specified value.
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Quidway S3300 Series Ethernet Switches
Hardware Description
1.6 Physical
Issue 01 (2011-01-30)