Last update
Blitz-wall Lightening Strike Protection for Pyranometers
Blitz-Wall protects irradiance sensors, pyranometers and other photovoltaic monitoring systems from high-voltage surges caused by lightning during thunderstorms. It uses gas discharge technology and is IEC 61643-31 compliant. The recurring threat to large photovoltaic farms is no longer theft, but lightning strikes.
The advantages of Blitz-Wall
- Overvoltage protection during electric storms.
- Outdoor installation: unlike similar products on the market, Blitz-Wall is an IP66-rated device, so it can be installed outdoors near the sensor that is to be protected.
- Great value for money: unlike comparable products from well-known manufacturers, Blitz-Wall is half the price!

How does Blitz-Wall protect photovoltaic systems from lightening strikes?
With two separate circuits, Blitz-Wall protects the power and data lines, for both analog and digital.


Operations that each gas discharger can undergo
A/B* | Tension | Peak current | Operations |
---|---|---|---|
8/20 | – | 10kA | 1 |
2/10 us | 6kV | 12kA | 10 |
8/20 us | 6kV | 500A | 150 |
Regulatory info
Power surge protection legislation for telecommunication systems is regulated by the IEC 61643-21: 2000 + Corrigendum 2001 and the EN 61643-21 standards, July 2001, integrated with EN 61643-21 / A2, January 2013.