Good road lighting power supply should have protection? - China lighting network

Until today in development of LED lighting technology, LED light module overall performance has been quite stable, directly affect the service life of the lighting is the key to the reliability of the power drive, the data show that LED outdoor lighting fault more than 70% is caused by power failure or unstable. At the same time, the LED lighting outdoor lighting also many enterprises focus on the layout and competing areas, but there are outdoor lighting applications due to the thunderstorm weather, summer heat and winter cold natural phenomenon and inevitable, compared with the indoor environment is more complex, so is that much more strict with the reliability of the power drive. For more harsh outdoor environment compared with the indoor environment, outdoor lighting products driven power have the protective ability of how? By the largest communication power supply manufacturer Hangzhou Zhongheng Electric Co. , Ltd. ( Stock code: 002364) Investment zhongheng pie power supply, have more than 20 years of experience in power supply manufacture, protection of the outdoor power are more leading design and fine manufacturing, the reporter understands, a good outdoor lighting drive power supply main should possess the following protection 1, lightning protection ability. As is known to all, outdoor lightning climate of great harm to the power supply, usually with direct lightning, thunder, lightning several types, such as the induction lightning is most common, is also the biggest damage to power supply, tend to produce 4 kv or higher voltage. Good power supply should have good lightning protection, and follow the national related design standards ( GB / T

17626。 5, the equivalent IEC standard - 61000 - 4 - 5, anti pressure differential mode 2 kv, common-mode compressive 4 kv) 。 Based on the climate characteristics of lightning incidence, zhongheng sent power lightning protection design is generally higher than national standards, the compressive in differential mode 4 kv, common-mode compressive in 6 kv. Of course, in addition to the one-piece power lightning protection design, some special lightning concentration areas, also can consult IEC61643 - lighting users 1 or EN61643 - 11 and other related standards, in lighting lamps and lanterns transmission front independent lightning protection device, added effect will be better. 2, resistance to high temperature cold resistant ability. In some areas outside the temperature can be as high as 50 ℃, and the lowest is often low to minus 30 ℃, this will require power supply must have a wider range of working temperature ring, zhongheng send power supply through the careful selection and good heat dissipation design, in - Wide range of 40 ℃ to + 70 ℃ work, guarantee the products reliable, stable performance. 3, waterproof ability. Market power supply waterproof and waterproof is there, but protective ability difference is very big, the rain only require IP65 protection grade, while demand IP67 waterproof protection grade, means that even if the power supply in the water, also can use safety, to avoid moisture moisture, salt fog and other internal PCB circuit of power supply and the influence of the components. Zhongheng send power supply adopts the potting process, completely reach IP67 degree of protection, to prevent moisture or salt fog breathing effect caused by the power failure, at the same time, the heat transfer performance of special potting material is very good, can help power supply cooling, potting process although increased the cost, but products use reliable, late can put an end to quality hidden trouble. In addition, the power over temperature protection, over voltage protection, under-voltage protection, short circuit protection, over power protection even functions is also essential. Coordinating editor YingZi

of China semiconductor lighting network author erdong up