Hardware Installation and Reference Guide Preparation Before Installation
ii
should be less than 1 Ω. The RG-ES100 series switch back plane is reserved with one grounding pole, as shown in Figure
2-1.
Figure 2-1 Grounding of the RG-ES100
2.2.6 Lightning Resistance
When the AC power cable is imported outdoors and directly connected to the power port of the RG-ES100 series switch,
use the lightning line bank to prevent the switch from being hit by lightning shocks. In this case, connect the mains supply
AC cable to the lightning line bank, and connect the switch to the lightning line bank. This helps prevent the current of high-
voltage lightning from passing the switch directly through the mains supply cable to a certain extent.
The lightning line banks are not provided and should be purchased by customers as required.
2.2.7 EMI
Electro-Magnetic Interference (EMI), from either outside or inside the device or application system, affects the system in
the conductive ways such as capacitive coupling, inductive coupling, and electromagnetic radiation.
There are two types of electromagnetic interference: radiated interference and conducted interference, depending on the
type of the transmission path.
When the energy, often RF energy, from a component arrives at a sensitive component through the space, the energy is
known as radiated interference. The interference source can be either a part of the interfered system or a completely
electrically isolated unit. Conducted interference results from an electromagnetic wire or signal cable connection between
the source and the sensitive component, along which cable the interference conducts from one unit to another. Conducted
interference often affects the power supply of the device, but can be controlled by a filter. Radiated interference may affect
any signal path in the device and is difficult to shield.
For the TN AC power supply system, the single-phase three-core power socket with protective earthing conductors
(PE) should be adopted to effectively filter out interference from the power grid through filtering circuits.
Do not use the grounding device for an electrical device or anti-lightning grounding device. In addition, the grounding
device of the device must be deployed far away from the grounding device of the electrical device and anti-lightning
grounding device.
Keep the device away from the high-power radio transmitter, radar transmitting station, and high-frequency large-
current device.
Take measures to shield static electricity.
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