博文

The difference between the voltage regulator and the UPS

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The functions are different, the voltage regulator and the UPS uninterruptible power supply are widely used, but there is a difference between the regulator and the UPS power supply, and many people are always wrong to think that the regulator is the UPS. So, what is the difference between UPS and voltage regulator?
UPS power supply is divided into an online UPS power supply and a backup UPS power supply. The common computer is equipped with a backup UPS power supply. The backup type including the voltage stabilizing part, which adopts the relay shift voltage regulation mode, and the voltage stabilizing effect is very poor, so it can not calculate the voltage stabilizer.
When the online UPS power supply is working, firstly convert the city into DC to charge the UPS battery, and the inverterturns the DC power into alternating current to power the load. As the city electricity passes through the exchange process to the DC, and then to the AC, the original interference and pulse voltage …

48V lithium-ion battery technology

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After the development of battery energy storage, electric vehicle, consumer electronics and other industries, the maturity of technology and industry has increased rapidly in the past few years, and the security has been greatly improved, and the price has been greatly reduced at present. Considering its excellent discharge capacity, high temperature resistance, simple maintenance, high energy density and light weight, it is a hot research field in many industries, and it fits the application scene of future data center and can be used to replace the traditional lead-acid battery. Considering its long service life, the cost from ROI is similar to that of lead-acid batteries. 48V lithium battery BBU technology has a lot of research and application in telecom industry and battery module of electric vehicle. It is also mature, and there are many industries and technology, operation data and so on. If a 2U to 3U high 48V battery BBU is installed next to the 48V power supply enclosure of …

Vulnerability element and fault analysis of switching power supply

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In electronic circuits, many failures are caused by switching power failures, and most of the common failures of the switching power supply are caused by damage to some vulnerable parts. For example, the switch tube in the switching UPS is often damaged, but the switch transformer has a very low probability of damage, almost negligible. So I summed up some of the components which are easily damaged in switching power supply, and what will happen after the damage.
1.Protective tube
Most of the burning protective tube is caused by the large current of the post level circuit, that is, the circuit behind is short circuited, such as the switch tube, the current limiting resistance, the bridge pile burning the short circuit, the chip damage, the large filter capacitor damage and so on, all will cause the burning of the Protective tube, the failure phenomenon is no response to the electricity. If you change the protective tube, do not rush the electricity test, we must find fault or take some…

Using modular UPS to improve efficiency and reduce carbon emissions from data centers

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Cooling technology has developed rapidly in recent years, significantly improving efficiency and reducing energy waste. The energy consumption of the air conditioning in the computer room accounts for 1/3 to half of the total power consumption of the data center. Nevertheless, these measures are not enough. Another key element of data center infrastructure provides similar improvements. Uninterruptible power supply is an important part of data center operation, providing key power protection and providing reliable backup power when the power interruption occurs. But just as servers consume electricity, generate heat, and require continuous cooling to run safely, so do UPS devices. In the past, this has affected the efficiency of many data centers, but in this field, significant technological advances have been made, that is, the rise of modular UPS systems. Previously, the most deployed UPS power source in the data center was a large tower type device, using traditional technology to…

Analysis of industrial chain of telecom power supply

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The industry chain of telecom power supply is mainly divided into raw materials, equipment manufacturing, agency, engineering consulting and design, construction, supervision and project investment from the value chain. From the perspective of enterprise chain and upstream and downstream, the telecom power industry chain is mainly divided into raw materials provider, equipment manufacturer, mechanical and electrical equipment agent, telecom engineering consulting and Design Institute, telecommunication engineering construction, telecommunication engineering supervision and telecom operators. From the angle of the space chain, the domestic telecommunication power industry is concentrated in the Pearl River Delta, the Yangtze River Delta and the Beijing region, and the foreign countries are mainly concentrated in the central European countries and the United States, and the latter accounts for the 60%. of the market share of the telecommunication power supply.


Current situation and prob…

Three principles of solar off grid system design

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1.According to the load type and power of the user to confirm the power of the solar off grid inverter, the household load is generally divided into inductive load and resistance load. The load of the washing machine, air conditioner, refrigerator, pump, smoke pump and so on is inductive load, and the starting power of the motor is 5-7 times of the rated power. When calculating the power of the inverter, the starting power of these loads should be taken into account. The output power of the inverter is greater than that of the load. For monitoring stations, telecom stations and other stringent requirements, the output power is based on the sum of the load power. But for poor families in general, considering that all the loads can not be opened at the same time, in order to save cost, the sum of the load power can be multiplied by the coefficient of 0.7-0.9. 2.Confirm component power according to user’s daily power consumption. The design principle of the component is to meet the dail…

Main points of dust proof and waterproof design for outdoor cabinet

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The main points of dust proof and waterproof design for outdoor cabinet: mainly for three places to carry out sealing treatment, so that the environment and the outside environment in a certain degree of isolation, to achieve the final design purpose. First of all, there are good dustproof measures for the cabinet to ensure the normal operation of the equipment. We begin with the seams of the cabinet, the joint part, the line interface, the design of the air duct and the fastening parts of the fasteners, because the dust and water in various environments enter the cabinet by these ways.
Main points of dust proof and waterproof design of cabinet
1.Air inlet and outlet: using maze structure and dustproof net to achieve dustproof and waterproof purposes.
2.The gap between the air duct joint: install the sealing strip or apply the sealant to achieve the purpose of protection.
3.Cabinet door: install sealing strip (EPDM) to achieve the purpose of dustproof and waterproof.
4.Lock installation: …