Thunderstorms are particularly frequent during the summer season, so this often requires us to do a good job of lightning protection for LED traffic lights – otherwise it will affect its normal use and cause traffic chaos, so the lightning protection of LED traffic lights How to do it well – let me take you to understand:
1. Install current-limiting lightning rods on the pillars for erecting LED traffic lights 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 used to connect to the grounding grid of the bracket itself – the grounding resistance is required to be less than 4 ohms.
2. Overvoltage protectors are used as power protection at the power leads of LED traffic lights and signal controllers. We should pay attention to waterproof, moisture-proof, dust-proof and the copper wire of its over-voltage protector is connected to the gantry grounding key respectively, and the grounding resistance is less than the specified resistance value.
3. Ground 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 the working grounding and personal protection grounding of LED traffic lights, only in each 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 incoming waves.
Post time: Jan-12-2022
