Installation Manual
Quidway S3026C-PWR Ethernet Switch
Chapter 2 Installation Preparation
Table 2-2
Limits on harmful gas contents in an equipment room
Gas
Maximum (mg/m
3
)
SO
2
0.2
H
2
S 0.006
NH
3
0.05
Cl
2
0.01
2.2.3 Anti-interference Requirements
A switch in use may be affected by the interference sources outside the system in a
way of capacitance coupling, inductance coupling, radiation of electromagnetic wave,
public impedance coupling (including the grounding system) or conducting line
(power cord, signaling line and transmission line, etc.). Therefore, the following
should be considered:
z
If AC supply system is TN system, AC power socket should be a monophase
three-wire power socket with Protection Earth (PE). Thereby, the filter circuit in
the equipment can effectively filter interference from the power supply system.
z
Keep the switch far away from radio launcher, radar launcher, and
high-frequency devices working in high current.
z
Adopt the measure of electromagnetic shielding if necessary. For example, you
can adopt shielded interface cable.
z
Interface cable must be run indoors, and outdoor cabling is not permitted,
otherwise, over-voltage and over-current may damage the device.
2.2.4 Laser Usage Security
S3026C-PWR is the class I laser device.
In operating status, it is prohibited to stare into the open optical interface because
the laser being transmitted through the optical fiber will produce a small beam of
light, because it has very high power density, when a beam of light enters the eye,
retina may be burned.
Caution:
Looking into the laser beam inside the fiber shall hurt your eyes.
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2-3
