Lightning protection - Electrical installation protection system
From Electrical Installation Guide
Contents |
The main objective of the electrical installation protection system is to limit overvoltages to values that are acceptable for the equipment.
The electrical installation protection system consists of:
- one or more SPDs depending on the building configuration;
- the equipotential bonding: metallic mesh of exposed conductive parts.
Implementation
The procedure to protect the electrical and electronic systems of a building is as follows.
Search for information
- Identify all sensitive loads and their location in the building.
- Identify the electrical and electronic systems and their respective points of entry into the building.
- Check whether a lightning protection system is present on the building or in the vicinity.
- Become acquainted with the regulations applicable to the building's location.
- Assess the risk of lightning strike according to the geographic location, type of power supply, lightning strike density, etc.
Solution implementation
- Install bonding conductors on frames by a mesh.
- Install a SPD in the LV incoming switchboard.
- Install an additional SPD in each subdistribution board located in the vicinity of sensitive equipment (see Fig. J16).
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| Fig. J16: Example of protection of a large-scale electrical installation |
