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Network lightning protection is very important for SPDs
With more and more sophisticated computer networks and communication equipment, the requirements of their working environment are getting higher and higher, and instantaneous overvoltages of lightning and large-scale electrical equipment will pass through the power supply, antenna, and radio signal transmission and receiving equipment more and more frequently. Intruding into indoor electrical equipment and network equipment, causing damage to equipment or components, casualties, transmission or storage of data being disturbed or lost, even causing malfunction or temporary malfunction of electronic equipment, system stoppages, interruption of data transmission, local area networks and even wide area networks To destroy. The danger is shocking and the indirect loss is generally much greater than the direct economic loss, so it is very important to choose a good pair of lightning arresters.
How to choose lightning protector?
1, first of all to find out their own distribution system, TT, TN or IT system? Because of the distribution system, we can determine the single-phase, three-phase, wiring, etc., in order to select the appropriate lightning protection products, most of the distribution system in China is TN-S.
2. The main material in lightning protection products is zinc oxide varistors. The quality of the materials and the level of the technology have a direct impact on whether the product can produce the expected protection when it is struck by lightning. Therefore, when you choose the lightning protection device, Be sure to understand the source of the manufacturer's varistors.
3. Determine several important parameters of the lightning arrester:
Nominal voltage Un: The rated voltage of the protected system corresponds. In the information technology system, this parameter indicates the type of protector that should be used. It indicates the effective value of the AC or DC voltage.
Rated voltage Uc: Can be permanently applied to the designated end of the protector without causing changes in protector characteristics and activating the maximum rms voltage of the protective element.
Rated discharge current Isn: The peak value of the maximum inrush current that the protector can withstand when a standard lightning wave with a waveform of 8/20 s is applied to the protector 10 times.
Maximum discharge current Imax: The maximum surge current peak value to which the protector can withstand when a standard lightning wave with a waveform of 8/20s is applied to the protector once.
Voltage protection level Up: The maximum value of the protector in the following tests: Skipping voltage with slope of 1KV/s; residual voltage of rated discharge current.
4, lightning protection device price and brand may be your most concern. Xu has blindly pursued foreign brands. In fact, many of the well-known lightning protection devices of foreign countries are also OEM-processed in China. As long as the functions of domestic manufacturers' products are comparable to it, and the price is so much more affordable than it is, why can't you? Choose domestically produced? Ward (Lightning Protection) Industrial Research Center is a professional lightning protection high-tech enterprise integrated with development, production and sales. It is located in the Qingdao High-Tech Industrial Base and is the only domestic manufacturer with enterprise standards. The main products are Wo German multi-function lightning protection device. Ward multi-function lightning arrester has been successfully registered in Shandong Province and other major provinces and obtained the National Meteorological Bureau inspection report. To ensure product quality, Sun Life Insurance Co., Ltd. insures customers to completely eliminate worries.