TerraStreamer
Early Streamer Emission Terminals (ESE)
Alltec Corporation is proud to offer its line of Early Streamer Emission terminals
for structural lightning protection.
Extensive research and development has allowed Alltec Corporation to create a lightweight and low wind loading ESE system to provide a safe and efficient manner of controlling dangerous lightning energy before it damages structures or its important contents, including human occupants. By utilizing advanced technology, TerraStreamer ESEs provide lightning protection to facilities that would otherwise be difficult or cost prohibitive to protect by conventional means.
The TerraStreamer ESE Terminals are externally mounted, proactive, structural lightning protection devices and are designed to activate in the moments directly preceding an imminent direct strike. The installation of a TerraStreamer ESE Terminal combines the best advantages of two systems: the direct path to ground of a conventional lightning protection system, and state-of-the-art ESE technology employed in the TerraStreamer's internal design. These combined advantages ensure that the TerraStreamer ESE System provides a secure zone of protection.
TerraStreamer ESEs are made of non-corrosive materials, utilize advance and sustainable technologies, maintain a 5-year replacement warranty, and are independently tested certified to NF C 17-102 and UNE 21 186 standards. TerraStreamer products complete the Alltec Protection Pyramid by capturing dangerous lightning discharges and safely channeling it to earth.
The ESE Principles
Early Streamer Emitter Protection Theory
The principle of operation for ESE terminals is to create
an upward propagating streamer earlier than conventional air terminals
or other objects on the earth.
TerraStreamer does this by collecting and storing ground
charge during the initial phase of a thunderstorm development.
Once
a thunderstorm begins creating downward step leaders, the ambient electric
field intensity in the area of the ESE terminal increases. When this
electric field intensity reaches a preset level, it triggers the terminal
to release the stored ground charge, forming an upward streamer microseconds
earlier than other objects in the immediate area.
This development of an upward streamer earlier in time and space ensures that the TerraStreamer ESE terminal should be the target of the developing lightning strike. The selection of the TerraStreamer model, placement, and mounting height above the protected area all factor into formulas calculating the dimensions of the protection area.
ESE Protection Radius
Early Streamer Emitter Protection Radius
The figures and tables provided in this section are provided using the NF C 17-102 standard. The
standard protection radius Rpp of the TerraStreamer is linked (according
to NF C-102 standard, to ∆T as given left) to the protection
levels I, II, III or IV (as calculated in Annex B of NF C-102) and to
the height of the TerraStreamer above the protected structure (H,
defined by NF C-102 as a minimum of 2m).
Additional Levels
Level 1+:Structure with a roof protected by an ESE air terminal. The whole constituted by ESE, down conductor(s) and earthing system(s), is connected to continuous metal framework or in concrete of the structure which are used as additional natural down conductors.
Level 1++:Structure with a roof protected by an ESE level 1+ with protection radius reduction by 40% and ensuring a complete protection from the materials on the roof against direct lightning.
Protection Areas
Alltec has developed the TerraStreamer product according to internationally recognized standards. However, Alltec does not make any specific performance guarantees as no lightning protection system can be 100% effective.
