Performance of DC operated power supply equipment
This article mainly summarizes the performance, characteristics, and scope of use of DC operating power supply equipment. Wuhan Dingsheng Power recommends using the DLNZ-T battery performance tester for performance testing of DC operation power supply equipment. The DLNZ-T battery performance tester is a digital storage multifunctional portable tester designed by Dingsheng Power to quickly and accurately measure battery operating status parameters. This battery performance tester can store 999 sets of test data, and users of the battery performance tester can query, delete, and transmit the data. The battery performance tester is intelligent and digital, with a fully Chinese operation menu, accurate measurement, and simple operation.
Many important computer rooms are equipped with DC operating power supply devices, which provide the necessary DC power for other devices in the room to ensure the normal operation of the system. So, the selection of DC operating power supply equipment is a very important link, and we must have some understanding of it in order to help us choose the right DC operating power supply equipment. Below are some analyses and discussions on the performance characteristics of DC operation power supply equipment.
Introduction to the Performance of DC Operating Power Supply Equipment
1. Allow ambient temperature; Due to the development of technology, various electrical components are tending towards miniaturization and intelligence, but these components have higher requirements for the temperature of the usage environment. When selecting DC operating power supply equipment, we should have an understanding of the allowable ambient temperature for DC operating power supply equipment. Currently, the allowable ambient temperature for DC operating power supply equipment is generally -5 to+40 ℃.
2. Noise from DC operated power supply equipment; The noise generated by DC operated power supply equipment is multifaceted, but it is mainly caused by the noise generated by the AC charging process. Initially, an electromagnetic saturation reactor was used to charge the battery through a diode rectifier bridge. This method produces relatively high noise levels, typically ranging from 55 to 65dB. If the reactor is not installed properly, the noise level can be even higher. Later, with the development of thyristor technology, people began to use thyristors for rectification and filtering to charge batteries, and the noise was also improved to a certain extent, controlled between 55-65dB. At the site of DC operation of power equipment, the staff only felt a trace of noise. With the development of high-tech, people have also designed high-frequency switches. By using high switching technology to convert AC power into DC power, the DC operation power supply equipment is developing towards miniaturization, and the noise is fully controlled at only 45dB. The presence of noise can no longer be felt on site, creating a comfortable working environment for workers. So, when choosing DC operation power supply equipment, we should try to use high-frequency switch rectification as much as possible.
3. Ripple voltage; The ripple voltage of the output DC operating power supply should be less than 0.1%.
4. Range of input AC voltage variation; The input power supply for DC operated power equipment is either 380V or 220V. This mainly depends on the ampere hour (Ah) output. But regardless of the input voltage level, it has a fluctuation range, and this voltage fluctuation is mainly caused by the fluctuation of the grid voltage. Therefore, the variation range of input voltage for DC power supply operation equipment should be within ± 10%. If the range of input voltage variation is small, when the grid voltage fluctuates greatly, it will cause the DC equipment to lose voltage and discharge the battery, which is not conducive to the operation of other equipment. Of course, the fluctuation range of the input voltage should not be too large, as a large fluctuation range will increase production costs.
5. Range of DC output voltage variation; Although the output voltage is DC, there is also a certain degree of voltage fluctuation. Generally, the output voltage fluctuation should be within the rated output voltage range of less than 5%. If the output voltage fluctuation is large, it will have an impact on other electrical equipment and even damage the equipment.
