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Lightning Rods

Lightning Terminals (2)

An Early Streamer Emission (ESE) Air Terminal is characterized by reacting when lightning approaches, intercepting it earlier than any other element within its protection area in order to conduct it safely to the ground. Lightning protection  using franklin rods and meshed conductors is used to share and dissipate the lightning current through a network of down-conductors and earth terminations.

Charge Dissipation Terminals (4)

TerraStat is the latest design in lightning dissipation technology.

Science and experience show that Charge Dissipation Terminals , and the structures on which they are installed, are much less likely to sustain a direct lightning strike than unprotected structures or structures with traditional lightning protection systems.

Accessories for External Lightning Protection (1)

External Lightning Protection

Interception systems and accesories

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. Cột thu lôi chống sét hay cột chống sét là hệ thống bảo vệ bên ngoài công trình gồm Đầu kim thu sét hay tán sét, Trụ đỡ, dây thoát sét và các thành phần bổ trợ, Hệ thống tiếp địa.
  • 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.

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