Ese Lightning Conductor Protection Radius Calculation
The protection radius of protector is calculated by standard formula given in the French standard NF C 17-102. The formulation is based on the lightning conductor triggering advance (ΔT), installation height (h) and the triggering distance (Δ L).
Rp = √(h(2D-h) )+ ∆L(2D+ΔL) h ≥5m.
ΔL = V × ΔT
Rp: Conductor protection area radius
h : The distance between the point of conductor and the area to be protected
ΔT: Triggering time
D : Triggering distance according to the NF C 17-102 standard
D value is: D= 20 Level-1
D= 30 Level-2
D= 45 Level-3
D= 60 Level-4
ΔL(m) = v (m/ µs). ΔT(m/µs)
Rp PROTECTION RADIUS(M) | ||||
ESE conductors | h=Conductors tip height (m) | |||
2 | 3 | 4 | 5 | |
Level-1 | ||||
C20 | 20 | 30 | 40 | 50 |
C40 | 24 | 35 | 47 | 58 |
C60 | 32 | 49 | 66 | 82 |
Level-2 | ||||
C25 | 23 | 37 | 45 | 56 |
C40 | 26 | 39 | 52 | 65 |
C60 | 36 | 54 | 72 | 90 |
Level-3 | ||||
C25 | 26 | 39 | 52 | 65 |
C40 | 30 | 45 | 60 | 75 |
C60 | 40 | 60 | 80 | 100 |
Level-4 | ||||
C25 | 29 | 43 | 58 | 72 |
C40 | 34 | 50 | 67 | 84 |
C60 | 44 | 66 | 88 | 110 |
PRODUCT | PRODUCT NO. | MATERIAL | REMARK |
C 25 | DA 01- 0164 | Stainless Steel | |
C 40 | DA 01- 0165 | Stainless Steel | |
C 60 | DA 01- 0166 | Stainless Steel |
PRODUCT | PRODUCT NO. | REMARK |
COSMOS | DA 01- 0172 |
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