Discharge-in-advance Lightning Rod

ODOB Discharge-in-advance Lightning Rod Key characteristics Type ODOB3.1 ODOB3.3 ODOB4.3 ODOB5.3 ODOB6.3 Time ahead to discharge T 14μs 25μs 34μs 43μs 52μs Max. discharge current 200KA Capability against wind speed ≥40m/s Steepness of lightning current ≤ 10kA Grounding Resistance ≤10Ω Length 500mm Standard France NEC17-102, GB50057-94 Protection Radius Following table for reference Protection Radius: TypeH = Effective height of lightning rod (m) 5 6 7 8 10 First-type Lightning Protection BuildingODOB3.1 22 22 23 23 25 ODOB3.3 42 42 43 43 43 ODOB4.3 51 51 52 52 53 ODOB5.3 61 61 61 61 62 ODOB6.3 70 70 70 70 71 Second-type Lightning Protection BuildingODOB3.1 44 44 46 47 48 ODOB3.3 57 58 59 60 63 ODOB4.3 68 69 69 70 73 ODOB5.3 78 79 79 80 82 ODOB6.3 88 89 89 90 92 Third-type Lightning Protection BuildingODOB3.1 50 50 52 52 55 ODOB3.3 64 67 68 72 75 ODOB4.3 76 78 79 82 108 ODOB5.3 87 88 90 92 94 ODOB6.3 97 99 100 102 104