Hardware Installation and Reference Guide
Preparing for Installation
52
Note
Please adopt protection grounding connections in buildings so that the switch can be connected to the
protection ground.
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Lightning Grounding
The lightning protection system of facilities is standalone, and is composed of a lightning rod, a lower
conductor, and a connector connected to the grounding system. The grounding system is usually used for
power reference grounding and safety grounding of the cabinet. Lightning grounding is required only for
facilities and is not required for the switch.
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EMC Grounding
Grounding required for electromagnetic compatibility includes shielded grounding, filter grounding, noise
and interference suppression, and level reference, which contribute to the overall grounding requirements.
The grounding resistance should be smaller than 1 ohm, and the ground terminals of the cabinet should be
grounded before the running of the switch.
2.2.7
Anti-interference Requirements
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Take interference prevention measures for the power supply system.
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Keep the switch away from the grounding equipment or lightning and grounding equipment of the power
device as much as possible.
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Keep the switch far away from high-frequency current devices such as high-power radio transmitting station
and radar launcher.
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Take electromagnetic shielding measures when necessary.
2.2.8
Lightning Protection Requirements
The RG-ES1 series switches can guard against lightning strikes. As an electric device, it may still be damaged
by strong lightning strikes. Take the following lightning protection measures:
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Ensure that the ground cable of the cabinet is in good contact with the ground.
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Ensure that the neutral point of the AC power socket is in good contact with the ground.
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It is recommended to install a power lightning arrester in front of the power input end to enhance the
lightning prevention for the power supply.
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When the AC power cable is imported outdoors and directly connected to the power port of the RG-ES1
series switches, lightning line bank should be adopted to prevent the switch from being hit by lightning
shocks. Usage of the lightning line bank: Connect the mains supply AC cable to the lightning line bank. Then,
connect the switch to the lightning line bank. This can help to prevent the current of high-voltage lightning
from passing the switch directly through the mains supply cable to a certain extent.
2.2.9
Inspection of the Installation Unit
Regardless of whether the switch is installed inside a cabinet or on a workbench, the following conditions must
be met:
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The switch is equipped with fans. Therefore, maintain a minimum clearance of 15 cm (5.91 in.) around the
air vents for heat dissipation. It is recommended to install the switch inside a standard 19-inch cabinet. The