喇叭图标
 郑州注册送体验金防雷是河南省防雷协会理事单位,是从事防防雷工程设计施工的乙级资质公司,防雷工程涵盖银行证券、文物古建筑、城市建筑物、煤矿工业企业等行业的信息系统防雷和建筑物直击雷防护。

LIGHTNING RODS

LIGHTNING RODS

EXTERNAL PROTECTION against lightning provides protection to structures against physical damage and injuries for contact voltages and contact with human beings.

The elements of a lightning protection system are the following:

  • Interception system.
  • Down-conductors.
  • Earth Termination System.
  • A correct surge protection installation
  • Other measures minimizing the destructive lightning effects (equipotential bonding, screening, etc.)

A Lightning Protection System (LPS) can be executed through Early Streamer Emission lightning conductors (ESE) or through Rods or Meshed Conductors. These products are manufactured in accordance with the relevant international standards: IEC serie: EN 62.305, EN 50.164.

The functioning of Early Streamer Emission (ESE) lightning conductors is based on the electric characteristics of lightning formation. Lightning initiates with a downward leader, propagating in any direction. Once it approaches objects placed on the ground, any of them can be struck. The objective of an external lightning protection system is to control the lightning striking point thus providing the lightning current a path to the ground without damaging the structure.

The main feature of Early Streamer Emission (ESE) lightning conductors is the emission of a continuous upward leader before any other object within its protected area. The standards define this characteristic using a parameter called advance time (Δt): “Average gain in upward leader triggering compared with a reference point having the same geometry. It shall be obtained by laboratory tests. It is measured in microseconds.”
The advance time determines the protection radius of each lightning conductor. If the triggering occurs earlier, then the distance where the downward leader is intercepted increases, thus avoiding the lightning strike in a wider area. The advance time must be measured in a High Voltage laboratory, following the test procedure described in the standards of lightning protection using ESE Air Terminals.

Lightning protection using rods and meshed conductors is used to share and dissipate the lightning current through a network of down-conductors and earth terminations.

Our products: /chanpinzhanshi/bileizhen/

EXTERNAL PROTECTION.jpg

上一篇:艾力高ERICO系统3000提前放电避雷针下一篇:O.MEX20 提前放电避雷针
网站首页 关于注册送体验金 澳门国际银河备用网址动态 防雷产品 解决方案 mg钻石浮华复古版 下载中心 联系注册送体验金