Lightning protection device introduction ightning Rod lifting bracket

Time：2021-05-08 View：

Lightning protection device refers to the sum of lightning receiver, down lead, grounding device, surge protector (SPD) and other connecting conductors.
Generally, lightning protection devices of buildings are divided into two categories-external lightning protection devices and internal lightning protection devices. The external lightning protection device consists of lightning receiver, down lead and grounding device, that is, the traditional lightning protection device. The internal lightning protection device is mainly used to reduce lightning current and its galvanomagnetic effect inside the building, such as adopting electromagnetic shielding, equipotential connection and installing surge protector (SPD) and other measures to prevent possible harm caused by lightning electromagnetic pulse.
Grounding device is an important part of lightning protection device. The grounding device releases lightning current to the Earth to limit the lightning protection device's voltage to the ground from being too high. In addition to independent ightning Rod, the lightning protection grounding device can be shared with other grounding devices on the premise that the grounding resistance meets the requirements.

 

Introduction
With the rapid development of China's national economy, intelligent devices and electronic information systems are widely used for lightning strikes? Prevention is becoming more and more stringent, and the occurrence of lightning disasters often causes serious consequences to such places. To reduce lightning disasters? To a minimum, we must enhance the awareness of lightning protection and disaster reduction, and the safety detection of lightning protection devices deserves our attention.?
Comprehensive lightning protection of modern buildings and structures includes three parts: direct lightning strike, Lightning induction and lightning wave intrusion protection. One set? Perfect lightning protection facilities, in order to achieve the purpose of protection against different lightning disasters, must adopt Lightning connection, diversion, shielding, mean? Technical measures such as voltage and grounding. Therefore, lightning protection facilities of buildings should include lightning receiver, down lead, grounding device, shielding,? Equipotential connection, reasonable wiring, surge protection and other technical links.

Noun explanation
I. The Interpretation of GB50343 technical specification for lightning protection of building electronic information system is: the general designation of external and internal lightning protection devices.
A. External lightning protection device: it consists of lightning receiver, down lead and grounding device, and is mainly used to prevent direct lightning attack.
B. Internal lightning protection device: it consists of equipotential connection system, common grounding system, shielding system, reasonable wiring system, surge protector, etc, it is mainly used to reduce and prevent galvanomagnetic effect generated by lightning current in the space to be prevented.
II. The interpretation of the GB50057-94 code for design of lightning protection for buildings is: the sum of Lightning connectors, down lead, grounding devices, surge protectors and other connecting conductors