During the summer season, thunderstorms are particularly frequent, so this often requires all of us to do a good job in the lightning protection of LED traffic lights-otherwise it will affect its normal use and cause traffic chaos, then the lightning protection of LED traffic lights How to do it well-let the editor take you to find out:
1. erect the pillars of LED traffic lights, install current-limiting lightning rods.
First, the top of the bracket and the base of the current-limiting lightning rod must ensure reliable electrical and mechanical connection, and then the bracket itself can be grounded or the flat steel can be connected to the grounding grid of the bracket itself-the grounding resistance is required to be less than 4 ohms.
2. Use over-voltage protectors as power protection at the power leads of LED traffic lights and signal controllers.
We must pay attention to waterproof, moisture-proof, dust-proof and the copper wire of the over-voltage protector is connected to the grounding key of the main frame respectively, and the grounding resistance is less than the specified resistance value.
3. grounding protection For a standard intersection, the distribution of pillars and front-end equipment is relatively scattered, so it will be more difficult for us to achieve a single-point grounding method; then, in order to ensure that the working grounding and personal protective grounding of the LED traffic signal light. The vertical grounding body is welded into a mesh structure under the root pillar-that is, the multi-point grounding method is used to meet the lightning protection requirements such as the gradual discharge of the incoming waves.