Quick Start
H3C S5100-SI/EI Series Ethernet Switches
Chapter 2 Preparing for
Installation
2-4
Gas
Maximum concentration (mg/m
3
)
NH
3
0.05
Cl
2
0.01
2.2.3 Electromagnetic Susceptibility
The operation of your switch can be affected by external
interferences, such as conducted emission by capacitance coupling,
inductance coupling, electromagnetic wave radiation, and common
impedance (including the grounding system) coupling, and leads
(power cords, signaling cables and output wires). To eliminate the
interferences, ensure the following:
z
For the AC power supply that adopts TN system, use a
single-phase three-wire power socket with Protection Earth
(PE) to effectively filter interference from the power grid.
z
Keep the device far from radio transmitting stations, radar
stations, and high-frequency devices.
z
Use electromagnetic shielding when necessary; for example,
use shielded interface cables.
z
Route interface cables only indoors to prevent signal ports
from getting damaged by overvoltage or overcurrent caused
by lightning strikes.
2.2.4 Safety in Use of Laser
The S5100 series are class-1 laser devices.
