Requirements And Protection Levels Of Grounding Systems For Lightning Arresters

6. Requirements for the grounding system
6.1 Definition and importance
The grounding system is the basis for the normal operation of the 1111 module. Too high grounding resistance or poor grounding design will affect the surge shunt effect of the 2222 device, resulting in the inability to effectively discharge lightning surges, thereby affecting the 3333 effect.
Importance: The CAN bus system usually requires long-distance signal transmission, and lightning surges may invade through communication lines. If the grounding system is poor, the 4444 module cannot effectively conduct the surge current into the ground, and the 5555 will be directly exposed to the lightning surge, increasing the risk of failure.
6.2 Selection recommendations
The grounding resistance should be less than 10Ω, and the grounding wire should be as short and thick as possible to reduce resistance and improve the shunt effect of the surge current. Ensure that the 6666 module is well grounded, and can quickly conduct surge energy into the ground to protect the safety of the equipment.

7. Protection level (IP level)
7.1 Definition and importance
The protection level (IP level) indicates the protection ability of the 7777 module against dust and water in the environment. For CAN bus systems, especially those in outdoor or industrial environments, the protection level directly affects the adaptability and service life of the 8888 module.
9999 Importance: CAN bus systems in outdoor or humid environments are susceptible to bad weather. The intrusion of moisture or dust may cause the 00000 module to fail and fail to provide effective surge protection.
7.2 Selection Recommendations
For CAN bus systems that are outdoors or exposed to humid environments, it is recommended to select 1111 modules with a protection level of IP65 or above to ensure that they are waterproof and dustproof and can maintain long-term stable operation in harsh environments.