Anti-Interference Requirements; Surge Protection Requirements - Ruijie Networks Reyee RG-NBS3100-8GT2SFP-P-V2 Installation Manual

Installation Guide
conditions at the installation site according to the grounding specifications, and complete grounding properly
based on the actual situation.

Safety Grounding
Ensure that the cabinet and power distribution device are securely grounded if the device uses the AC power
supply. Failure to do so may result in an increased risk of electric shock, particularly when the insulation
resistance between the power supply inside the device and the chassis decreases.
Caution

Adopt grounding protection connections in buildings so that the device can be connected to the
protective grounding system.

Verify that the AC socket is reliably connected to the protective grounding system of the building. If not, a
protective grounding wire should be used to connect the protective grounding lug of the AC socket to the
protective grounding system of the building.

The cross-sectional area of the protective grounding wire should be at least 0.75 mm2 (18 AWG).

Lightning Grounding
The lightning protection system of facilities is standalone, and is composed of a lightning rod, a down conductor,
and a connector connected to the grounding system. The grounding system is usually used for power reference
grounding and safety grounding of the rack. Lightning grounding is required only for facilities and is not required
for the device.

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 grounding terminals of the rack should be grounded
before the running of the device.
2.2.7

Anti-interference Requirements


Take effective measures to prevent interference from power grid to the power supply system.

Keep the device far away from the grounding facility or lightning and grounding facility of the power device
as much as possible.

Keep the device far away from high-frequency current devices such as high-power radio transmitting stations
and radar launchers.

Take electromagnetic shielding measures when necessary.
2.2.8

Surge Protection Requirements


Although the device provides a certain level of protection against lightning strikes, it remains vulnerable to
exceptionally strong strikes. The following lightning protection measures should be taken: Ensure that the
grounding cable of the cabinet is in good contact with the ground.

Ensure that the neutral point of the AP power socket is in good contact with the ground.

Install a power lightning arrester in front of the power input end to enhance surge protection for the power
supply.
10
Preparing for Installation