Lightning protection solution for telecom communication base stations

Lightning protection for telecom communication base stations involves a multi-layered approach, includingdirect and indirect lightning strike protection. This includes using lightning rods, down conductors, grounding systems, surge protection devices (SPDs), and ensuring proper bonding and insulation to minimize damage from lightning strikes. 

1. Direct lightning protection:

-Installation of lightning rod: Install lightning rods on the top of the base station tower, with a height that can protect the entire base station building and equipment, allowing lightning to strike the lightning rod first, and introducing lightning current into the ground through good grounding to avoid direct lightning damage to the base station equipment.

-Lightning protection strip and lightning protection network: Install lightning protection strip and lightning protection network on the top of the base station building to form a lightning arrester, providing comprehensive protection for the building and reducing the risk of direct lightning damage.

2. Inductive lightning protection:

-Power system lightning protection: Install power lightning protection devices at the mains power inlet, with multi-level protection. The first level lightning arrester is used to discharge most of the lightning current, and subsequent lightning arresters further limit residual voltage to protect power equipment such as rectification equipment, batteries, and connected communication equipment.

-Signal line lightning protection: Install corresponding signal lightning arresters on transmission lines, antenna feeders, and other signal lines. The lightning arrester for the RuTian feeder is installed at the connection between the antenna and the feeder to prevent lightning from entering the main equipment of the base station along the feeder, ensuring the safety of signal transmission equipment.

3. Grounding system:

-Improve grounding network: Construct a good grounding network, and the grounding resistance should meet the relevant standard requirements, generally not exceeding 4 ohms. The grounding grid consists of horizontal grounding bodies and vertical grounding bodies, which connect various equipment in the base station to ensure that lightning current can quickly and smoothly discharge into the ground.

-Equipotential connection: By using equipotential connection strips, various metal equipment, pipelines, structures, etc. inside the base station are electrically connected, so that they are at the same potential when struck by lightning, avoiding damage to equipment caused by counterattack currents due to potential differences.

NASN DC power supply system built in DC Earth Fault Relay, let us know there's a problem of one part of the DC system touches the ground. Under normal conditions, when there's no problem,the voltage between the positive and negative terminals to the ground is the same. But if there's an earth fault, it creates a parallel path for the current to flow and changes the voltage.