Code: P-CDR-1

Lectro-Tech Early Streamer Lightning Rod


-Ingesco ESE Lightning Rod provides protection levels
according to the IEC Standards UNE 21.186 and NF C 17-102.

- Completely effective in handling the lightning discharge.
- Carries lightning current without resistance.
- Non-electric lightning rod (self energising).
- No electronics, thus no risk of failure.
- No external power required.
- No special maintenance.
- Certificates of approval.

The principle of operation is based on the abrupt increase of the electric field produced by the storm phenomena moments before a lightning discharge, causing strong ionization directed towards the cloud. This ionized channel is a path for possible discharge from the cloud to the ESE tip. When discharged, the lightning bolt will travel along this ionized path and attach to the desired point of the ESE. This energy is safely taken to earth. This effect is directly proportional to the increasing electric field and becomes more intense before an imminent lightning strike.

ESE design:
A positive charge is accumulated on the loading accumulation system bars. This allows an early streamer emission of proportional action to that of the cloud charge.

The protection RADII Rp(m) are
calculated according to
NF C 17-102 pp2.2.3.2
for heights of h=20m.

In accordance with standards UNE 21.186 & NF C 17-102 Protection level 1, 11 & 111 are according to the lightning risk assessment guide.
Annex B UNE 21.186 & NF C 17-102. Rp in the table is by placing the ESE device on a 5 m (h) mast and above the structure to be protected. (Total h:20m). D= Initiation distance m.
The Lightning Strike Counter detects the electrical energy that emanates from a lightning strike as it goes to ground vai the down conductor. The device registers each strike increasing the count by one each time. The Lightning Strike Counter must be installed in the down conductor that connects the lightning rod to the grounding system. There no power source required as it uses the induced voltage of the lightning strike for its operation.

Full installation must be in accordance with standards UNE 21.186 & NF C 17-102


- The top of the ESE must be 5 m above the zone it protects. ( including antennas, cooling towers etc).

- Any receiving antennas (TV, radio, telephone) must be connected to the down conductors via a spark gap.

- The coaxial cables of these antennas must be protected with an appropriate surge protection device.

- Any metallic items that rise above the roof level must be bonded to the closest down conductor.


- Each ESE must be connected to at least one down conductor. At least two down conductors are required for the following cases:
- If the width and breadth of the structure is larger than the height
- Where the height of the structure is greater than 28 m.
- The two down conductors must be located on the opposite sides of the structure.
- Down conductors must be as straight as possible and the shortest path to the earthing system. Bends not to exceed 20 cm.
- Down conductor must be on the outside of the building and not near electrical or gas pipes.


- An earthing system is required for each down conductor.

- The earth resistance must be less than 10 ohms.

- It is recommended to have an inspection box with a disconnection point such that the earth can be regularly tested.

- It is advisable to cross bond the ESE earth(s) to the structure earth.

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