How to choose a regulated power supply for instruments
With the rapid development of China's industry, all walks of life are a large number of electronic appliances, and electronic appliances in the use of the process will produce a large number of harmonics, return to the grid after the inevitable grid interference, the formation of grid pollution, such electronic appliances, such as computers, monitoring systems, small communication equipment, automation equipment and some UPS power supply will produce harmonic interference. In addition, where the use of high-voltage metallurgical analysis of analytical instruments, the generation of high-voltage are used to double the voltage rectifier, doubling the voltage rectifier type of load, the input current is a very large distortion of the stalactitic pulse wave, the opening angle of about 60 °, the input power factor of PF ≈ 0.65, but the amplitude of the input current is very high, resulting in a large number of 3rd, 5th... ...odd harmonics, if returned to the power grid will form the mutual interference of the neighboring equipment, especially for the normal work of the analytical instruments to bring serious interference.
To provide power for analytical instruments, in addition to a high degree of accuracy of voltage regulation and a large range of voltage regulation, that is, to fight against harmonic interference and other grid pollution and lightning strike, to have the above comprehensive functions of the regulator is not much, and parametric regulator is the best in this regard, it has been used in a large number of applications, such as: U.S. Thermo-electricity, Likely, PE, Agilent, Japan, Shimadzu, Hori field, France, JY, Beijing, Nak, ultra-spectrum, Germany Spike, Toledo scale and other supporting power supply.
AC parameter voltage regulator in the design, it will be fully considered must have a wide range of voltage regulator, voltage regulator precision should be high, the response time should be short, the output voltage waveform distortion should be small, must have a two-way anti-jamming ability and load short-circuit auto-protection, isolation, filtering and shaping, must be able to withstand two times the power supply voltage shock will not be over-voltage output, and other special features, AC parameter voltage regulator, it is a selective frequency of 50HZ, a narrow-band filter, for the grid on the power supply. Filter, for the grid on the spike interference, harmonic interference, high-frequency interference, lightning interference can not pass through it and enter the equipment, analyzing the harmonics generated by the instrument will not return to the grid, and will not interfere with each other.
AC parameter regulator in the anti-lightning strike, 15KVA or more products in the lightning protection ability to lightning (6000V), through the AC parameter regulator lightning strike, can be a large lightning current 40KVA drain into the ground to achieve the purpose of limiting the current and voltage, thus protecting the power equipment. In the application of lightning protection, when it comes to broadcasting, television, mobile communications, the use of harsh environments, the use of many of these occasions are on the top of the hill, the roof of the building, they are subject to the risk of lightning strikes is very large. The AC parameter regulator has been serving these industries for many years, sometimes, after a strong lightning strike, the lightning to the regulator input line package blowing up, but it will not be damaged behind the power equipment.
In addition, AC parameter voltage regulator's three columns core voltage regulator transformer its three columns magnetic flux is complementary, so the three-phase line voltage and phase voltage is more balanced, when the input three-phase 10% imbalance or load 10% imbalance, a total of three-phase output is still more balanced, unbalance ≤ 3%. Sanko AC parameter voltage regulator after proper debugging, its input can be used as the reactive power compensation of power transmission line, and its output can be used as the capacitive reactive power compensation of equipment, and its power factor ≥ 0.95.
