Lightning Protection Systems

EIS Provides External Protection against lightning To Protect structures and people against direct lightning strikes. Lightning is highly hazardous, with severe effects such as fire, economic losses due production to interruption or injuries to living beings. All external protection is composed by:

An air termination system for intercepting lightning strikes.
A down-conductor system for driving the lightning current.
An equipotential and earthing system for draining the lightning current safely in the ground.
EIS offers all existing technologies for implementing external lightning protection systems according to the relevant standards.

Conventional Lightning Protection Systems or Passive Systems (Faraday Cages)
Active Systems (using Early Streamer Emission Air Terminals)

passive protection using rods and meshed conductors

We undertake design, supply & installation of lightning protection systems in compliance with international standards like IEC-62305 & NFPA-780, BS-EN-62305 & IS-2309. Our team of experts perform the risk assessment studies to determine the vulnerable areas of the structure to be protected and accordingly design the most efficient lightning protection scheme.

This ensures the most effective placement of air terminations on the structure. Down conductors are positioned to provide the most direct path from the air termination to a low impedance grounding system, to help ensure safe and effective dissipation of the lightning impulse. Equipotential bonding of all circuits and conductors is necessary to reduce ground potential differences and to limit equipotential damage.

According to UNE 21186, NFC 17 - 102, CTE SUS

Early Streamer Emission Air Terminal, whose functioning is based on the electric features of lightning formation, emitting the upward leader before any other object within its protection radius. This attribute is called “advanced time” (ΔT). Longer anticipation in forming the upward leader turns into larger distances for intercepting the downward leader thus protecting a bigger area against lightning. Standards limit (ΔT) to a maximum of (ΔT) ≤60µs.
The below table Provides the radius of protection of our standard ESE Air terminals.

PROTECTION RADIUS IN METERS (Rp)
	Level Of Protection	ΔT= 15
Level 4	Level VI	2	26	39	44
		4	52	74	85
		6	65	90	107
		8	65	91	108
		10	66	92	109
Level 3	Level III	2	22	35	39
		4	44	66	78
		6	55	80	97
		8	55	81	98
		10	56	82	99
Level 2	Level II	2	20	31	34
		4	40	58	68
		6	50	70	87
		8	50	71	87
		10	51	72	88
Level 1	Level I	2	16	32	32
		4	32	55	63
		6	40	65	80
		8	40	66	80
		10	41	66	80