Lightning Protection

Lightning Protection is an essential safety measure in photovoltaics to protect people from injuries and photovoltaic systems from damage caused by lightning strikes. A direct lightning strike on a photovoltaic system can lead to fires, electrical surges, and the destruction of components.

How Lightning Protection Works:

  • External Lightning Protection:

    • Lightning Rod: Capture rods or cables that intentionally catch and divert lightning.
    • Conductors: Safely channel the lightning current to the ground.
    • Grounding System: Distributes the current in the ground and ensures safe dissipation.

  • Internal Lightning Protection:

    • Surge Protection: Protects electrical devices and systems from surges caused by lightning.
    • Potential Equalization: Connects all metallic parts of the system to avoid dangerous voltage differences.

Important Aspects:

  • Standardization: The installation of lightning protection systems is subject to strict standards (e.g., DIN EN 62305) to ensure adequate protection.
  • Individual Planning: Each site and photovoltaic system requires individual lightning protection planning, as the requirements depend on factors such as building height, surroundings, and system performance.
  • Regular Inspection: Lightning protection systems must be regularly inspected and maintained to ensure their functionality.

Why is Lightning Protection So Important?

  • Protection of People: Protects individuals from direct contact with lightning current and indirect effects such as surges.
  • Protection of Systems: Prevents fires, short circuits, and damage to solar panels, inverters, and other components.
  • Insurance Coverage: Many insurance companies require functioning lightning protection to reimburse damages.

Conclusion:

A well-planned and professionally installed lightning protection system is an indispensable investment for any photovoltaic system. It not only protects the system itself but also the personnel working in it and the surrounding property.

Additional Keywords: Surge Protection, Ground Resistance, Potential Equalization