Lightning protection grounding of the Data center

Lightning protection grounding system is an important subsystem of weak current precision equipment and computer room protection. It mainly consists of lightning receiving device, lead down line, grounding wire, grounding body (stage), grounding device, grounding network and grounding resistance.

(1) Lightning receiving device: metal rod (connector) that directly or indirectly receives lightning, such as lightning rod, lightning belt (net), overhead ground wire and lightning arrester, etc.

(2) Lead down line: conductor used to conduct lightning current from the adapter to the grounding device.

(3) Ground wire: electrical equipment, tower ground terminal and ground body or neutral wire connection under normal circumstances do not carry current metal conductor.

(4) Grounding body (pole) : The metal conductor buried in the earth and in direct contact with the earth is called the grounding body. It is divided into vertical grounding body and horizontal grounding body.

(5) Grounding device: general term for grounding wire and grounding body.

(6) Grounding network: composed of vertical and horizontal grounding bodies with discharge and pressure balancing network grounding device.

(7) Grounding resistance: The sum of the ground resistance of the grounding body or natural grounding body is called the grounding resistance of the grounding device, and its value is equal to the ratio of the voltage of the grounding device to the ground and the current flowing into the ground through the grounding body. At the same time, the grounding resistance is also a sign to measure the level of the grounding device.