Yangzhou plum rains season starting from 14 June each year, as of July 20. Jiangsu solar street lamps factory found during this time there will be a last for a long gray rainy weather, have a thunder shower.
yangzhou street lamp manufacturers of more than 12 m light pole top is equipped with a lightning rod ( Lightning rod with diameter of 20 controls) 。
light pole in general, there are two systems, one is an external lightning protection system is the internal lightning protection system, between the two complement each other, complement each other. Internal lightning protection system on many devices, such as housing, in and out of the sanctuary of cable, metal pipes or set to connect the external lightning protection system such as over-voltage protector, and conducting equipotential connection.
outdoor light pole height is at the height of 6 meters or more commonly, and installed in pedestrian traffic lane, if once attacked by electric ray, will cause great threat on people's life and property security, therefore, the design of lightning protection system is a very important step! In the design of street lamps and other production, long-term to street lamp power supply lightning protection system strictly detection was applied to the product of lamps and lanterns, as far as possible consistent with the safety and life do street light!
attached: according to the specification for design of building lightningproof GB50057 - 94 ( The 2000 version) 2. 0. Article 4, the third clause of lightning: it is estimated that the number is greater than or equal to 0. 6 times/a, and less than or equal to 0. 3 times/a residential, office buildings and other general civil buildings should be classified as class iii lightning protection building, so in general, it is divided into the third category lightning protection building and 3 according to the specification. 4. Article 2 each downlead of impulse grounding resistance should not be greater than 30 & Omega; 。 If say grounding and anti-static equipment grounding, the work of a computer, such as equipment protected area of fellow common grounding system, shall be carried out according to the requirements of ground resistance of the minimum, generally no more than 4 ohms.