Regulated power supply and analytical instruments

With the rapid development of my country’s industry, various electronic appliances are widely used in all walks of life, and electronic appliances will generate a large number of harmonics during use. After returning to the grid, they will inevitably cause interference to the grid and cause grid pollution. Class electronic appliances such as computers, monitoring systems, small communication equipment, automation equipment and some UPS power sources will produce harmonic interference. In addition, with the rapid development of my country’s industry, all walks of life use a large number of electronic appliances, and electronic appliances will generate a large number of harmonics during use, which will inevitably cause interference to the grid after returning to the grid, forming a grid Pollution, this kind of electronic appliances such as computers, monitoring systems, small communication equipment, automation equipment and some UPS power sources will produce harmonic interference. In addition, all analytical instruments that use high voltage for metallographic analysis use voltage doubler rectification and voltage doubler rectification type loads for high voltage generation. The input current is a stalactite-shaped pulse wave with great distortion, and the opening angle is about 60° , The input power factor PF≈0.65, but the amplitude of the input current is very high, and a large number of 3rd, 5th...odd harmonics are generated. If they return to the power grid, they will cause mutual interference between adjacent equipment, especially for the normal analysis of the instrument Work brings serious interference. In the design of the Tower brand AC parametric voltage regulator, it must have a wide range of voltage regulation, high voltage regulation accuracy, short response time, low output voltage waveform distortion, two-way anti-interference ability and automatic load short-circuiting. Special functions such as protection, isolation, filtering and shaping, and must be able to withstand twice the power supply voltage impact without overvoltage output. The Tower brand AC parameter regulator is a narrowband filter with a frequency of 50HZ, which is aimed at peak interference on the power grid. , Harmonic interference, high-frequency interference, and lightning interference can not enter the equipment through it. The harmonics generated by the analysis instrument will not return to the power grid, and will not interfere with each other. In terms of anti-lightning strike, the product of 15KVA and above has reached the first level of lightning protection (6000V). Through the lightning strike of the iron tower AC parameter voltage stabilizer, the large lightning current 40KVA can be discharged into Ground, to achieve the purpose of current limiting and voltage limiting, thereby protecting electrical equipment. The application of lightning protection is undoubtedly the use of radio, television, and mobile communications in a harsh environment. Many of these use occasions are on the tops of mountains and buildings, and the risk of them being attacked by lightning is very high. The Tower brand AC parameter voltage stabilizer has served these industries for many years. Sometimes, after being struck by a strong lightning, the lightning blows up the input cable of the voltage stabilizer, but the electrical equipment behind it will not be damaged. To provide power for analytical instruments, in addition to having a higher voltage stabilization accuracy and a larger voltage stabilization range, that is to fight against harmonic interference and other grid pollution and lightning strikes. There are not many voltage stabilizers with the above comprehensive functions. The Tower brand parametric regulator is a leader in this regard. It has been widely used in such as: American Thermoelectric, Lecco, PE, Agilent, Shimadzu, Horiba, France JY, Beijing NAK, Chaopu, Germany Supporting power supplies for Spike and Toledo weighing instruments. In addition, the three-column core voltage stabilizer transformer of the Iron Tower AC parameter voltage stabilizer has complementary three-column magnetic fluxes, so the three-phase line voltage and phase voltage are relatively balanced. When the input three-phase is 10% unbalanced or the load is 10% Unbalance, the total output of three phases is still relatively balanced, unbalance ≤3%. The tower AC parameter regulator has been properly debugged, its input can be used as reactive power compensation for power transmission lines, and its output can be used as capacitive reactive power compensation for equipment, and its power factor is greater than or equal to 0.95. Therefore, for many years, iron tower products have been widely used in various high-risk power supply security departments, such as banks, important power users of government agencies, hospitals, national defense, aerospace (the Xichang Satellite Launch Center is equipped with iron tower products) and so on.