7.3.3 Lightning protection
Lightning protection guidelines.
CONSULT WITH YOUR LIGHTNING PROTECTION SPECIALIST TO ANALYSE YOUR PROJECT.
1. Desired application: Application of lightning detection system (with Air-termination rods)
• Determine the safe separation distance (S) according to NEN-EN-IEC 62305 (minimum 0.5 metres).
• Try to observe the separation distance between the PV system (PV) and lightning protection system (LPS).
• In this way, you can keep the PV system separate from the lightning protection system to prevent lightning current from
entering.
2. If this is not possible, connect the PV system to LPS according to the applicable lightning protection level
(LPL);
• See table 1, use at least 16 mm
2
connections.
• Check the need for additional overvoltage protection type 1 and/or type 2.
• Make sure that the cable support systems are also earthed and connected to LPS. NB: Metal cable support systems
also belong to the PV system.
• Make sure that the earth cable is routed parallel to the DC cables.
IN EITHER CASE: CONSULT WITH YOUR LIGHTNING PROTECTION SPECIALIST BEFOREHAND TO
ANALYSE YOUR PROJECT AND PREVENT UNWANTED SAFETY PROBLEMS. ESDEC IS LIABLE UNDER NO
CIRCUMSTANCES FOR THE APPLICATION AND/OR COMBINATION OF THE LIGHTNING PROTECTION ON THE
ROOF. CONSULT WITH YOUR SPECIALIST AND ENSURE SAFE INSTALLATION ACCORDING TO NEN-EN-IEC 62305
- NEN1010 (NPR5310 - part 712 section 6.3)
Mesh size LPL level Connect the PV system to the ..
5x5 metres I 5 metres
10x10 metres II 10 metres
15x15 metres III 15 metres
20x20 metres IV 20 metres
LPS = lightning protection system
LPL = lightning protection level
table 1
28
Rev. 08.08.23 MANUAL FOR FLATFIX FUSION MOUNTING SYSTEM FOR FLAT ROOFS
S
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