Ash Stormflash 15 — ESE Air Terminal

Early Streamer Emission lightning terminal, ΔT = 15µs, certified to NF C 17-102.

The Ash Stormflash 15 is an Early Streamer Emission (ESE) air terminal that generates an early upward leader ahead of a natural lightning strike, intercepting it at a controlled point and guiding the current safely to the earth termination system. Fully passive — no battery or external power required.

Key Features

Early Streamer Emission (ESE) Air Terminal
Certified to NF C 17-102 (edition 2011) and UNE 21186:2011 standards
ΔT = 15 µSec (Triggering Time Advance)
No battery or external power source required
304L (Inox) stainless steel construction — suitable for any environmental condition
Compatible with tape/strip, round conductor, isolated/insulated cable, and HVSC cable down-conductors
20-year warranty

Technical Specifications

Protection Radius (metres) per NF C 17-102 (2011)

Mast Height h(m)	Level I (Very High)	Level II (High)	Level III (Medium)	Level IV (Standard)
2	13	15	18	20
3	19	22	27	31
4	25	30	36	41
5	32	37	45	51
6	32	38	46	52
8	33	39	47	54
10	34	40	49	56
20	35	44	55	63
30	35	44	58	69
40	35	44	60	72

Certifications

NF C 17-102 (2011) CertifiedUNE 21186:2011 Certified

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Mast Height h(m)	Level I (Very High)	Level II (High)	Level III (Medium)	Level IV (Standard)
2	13	15	18	20
3	19	22	27	31
4	25	30	36	41
5	32	37	45	51
6	32	38	46	52
8	33	39	47	54
10	34	40	49	56
20	35	44	55	63
30	35	44	58	69
40	35	44	60	72

Mast Height h(m)	Level I (Very High)	Level II (High)	Level III (Medium)	Level IV (Standard)
2	13	15	18	20
3	19	22	27	31
4	25	30	36	41
5	32	37	45	51
6	32	38	46	52
8	33	39	47	54
10	34	40	49	56
20	35	44	55	63
30	35	44	58	69
40	35	44	60	72

Mast Height h(m)	Level I (Very High)	Level II (High)	Level III (Medium)	Level IV (Standard)
2	13	15	18	20
3	19	22	27	31
4	25	30	36	41
5	32	37	45	51
6	32	38	46	52
8	33	39	47	54
10	34	40	49	56
20	35	44	55	63
30	35	44	58	69
40	35	44	60	72