Street lights are indispensable in urban construction nowadays. Below, solar street light manufacturers will tell you how to do a good job in grounding protection for street lights?
(The above is the 9-meter dual-arm LED street light produced for the auxiliary branch line of Luogang International Sports Center)
(1) Grounding protection adopts TT mode, closed ring artificial grounding device is set around the outdoor lighting box, the grounding pole is 50*50*5 L2500 hot-dip galvanized Angle steel, and the connecting line is 40*4 hot-dip galvanized flat steel. The grounding electrode spacing is 5m, the buried depth is 0.8m, and the grounding resistance is not more than 10 ohms.
(2) The ground terminals of all lamps in the system are reliably connected through PE cables, and then connected to the PE bus bar of the lighting box and grounded.
(3) In order to prevent lightning overvoltage, a first-level surge protector is installed in the outdoor lighting box. Grounding protection is very important because it can effectively prevent damage caused by lightning strikes and overvoltage to the street lamp system. The TT type of grounding protection is an effective way, which can be set up around the outdoor lighting box with a closed loop artificial grounding device to ensure the effectiveness of the grounding. The grounding electrode is 50505L2500 hot-dip galvanized Angle steel, the connecting wire is 40*40 hot-dip galvanized flat steel, the grounding electrode spacing is 5m, the buried depth is 0.8m, and the grounding resistance is not more than 10 ohms, which are important parameters to ensure the normal operation of the grounding system.
(Above are the 12 meter dual arm road lights produced by our company) In addition, after all the grounding terminals of the lighting fixtures in the system are reliably connected through PE wires, they are connected to the PE busbar of the lighting box and grounded, which can effectively improve the grounding effect of the entire system. At the same time, setting up a first level surge protector inside the outdoor lighting box can effectively prevent damage to the street light system caused by lightning strikes and overvoltage, ensuring the normal operation and service life of the street light system. Therefore, strictly following these requirements and standards for street light grounding protection can ensure the safe and reliable operation of the street light system.
