4
RAK7249/40
4
2. Indoor Surge Protection System
For the purpose of protecting the indoor equipment and circuitry connected to the LoRa
Gateway you need to install an Ethernet port SPD lightning arrester. It should be position
along the cabling connecting the Gateway to the PoE injector. Make sure you connect its
grounding wire terminal to an appropriate building grounding point. Thus, your PoE
injector and network switch/router should be surge protected.
Please refer to the images in the diagram below for the Outdoor and Indoor portion of the
surge protection system. Should you fail to adhere to the recommendations in this
document RAKwireless carries no responsibility for any damage your equipment incurs
due to lightning strike!
Note: Make sure to provide all the grounding points for the antennas (GPS arrester is of a
different class as seen below), gateway housing, and Ethernet SPD. Additionally, make
sure you have a well-grounded pole with a lightning rod for the LoRa Antenna. The
lightning rod should be high enough that all the equipment falls below the 45-degree
angle as seen in the picture.
