Uninterruptible power supply is a kind of inverter, whose main function is to provide uninterrupted power supply for a single computer network system or other power equipment. When the market power input is normal, the UPS uninterruptible power supply provides the load for the market power regulation. At the same time, it also charges the battery in the machine; when the market is interrupted, the UPS will immediately convert the electrical energy in the machine to provide 220V AC to the load through inverter conversion. To keep the load working normally and protect the load hardware and software from damage, UPS power can be divided into three categories. Now China Upsystem Power factory will introduce the classification of UPS power to you.
According to the new standard IEC (International Electrotechnical Commission), UPS is divided into the following 3 categories according to its structure and operation principle:
1. Online interactive UPS power supply
It means that the inverter is connected in parallel between the mains and the load, and acts as a backup power supply, and at the same time, the inverter acts as a charger to charge the battery. Through the reversible operation mode of the inverter, it interacts with the mains, so it is called interactive. This kind of Network And Server Online Ups, when the mains is normal, the load is powered by the improved mains, and the inverter acts as a charger to charge the battery. At this time, the inverter acts as an AC/DC converter; When a fault occurs, the load is completely powered by the inverter, and at this time, the inverter acts as a DC/AC converter.
Online interactive UPS has the advantages of simple structure, convenient implementation, easy parallel connection, easy maintenance and repair, high efficiency, low operating cost, high reliability of the whole machine, and its performance meets certain load requirements, especially suitable for some computers in the network. The equipment adopts a distributed power supply system. The disadvantage of this kind of power supply is that the voltage regulation performance is not high, especially the dynamic response speed is low, and the anti-interference ability is not strong, and the circuit will produce harmonic interference and modulation interference.
2. Passive backup UPS power supply
It means that the inverter is connected in parallel between the mains and the load and is simply used as a backup power supply. This kind of UPS power supply, when the mains is normal, the load is completely and directly powered by the mains, the inverter does not do any power conversion, and the battery is powered by an independent charger; when the mains is abnormal, the load is completely powered by the inverter. The device provides power.
Passive backup UPS has the advantages of simple structure and cheapest price, and is used in some non-important loads, such as home computers. However, when the mains is cut off, the relay switches the inverter to the load, and the switching time is long, generally requiring a few milliseconds of interruption, so the slightly important computer equipment should not use a passive backup UPS power supply.
3. Double conversion UPS power supply
It means that the inverter is connected in series between the AC input and the load, and the power supply continuously supplies power to the load through the inverter. The power supply mode of this UPS power supply is as follows: when the mains is normal, the mains supplies power to the load through the rectifier and inverter; when the mains is abnormal, the accumulator supplies power to the load through the inverter.
Double conversion UPS is the mainstream product of UPS power supply. It has the advantages of good performance, high voltage stability and frequency stability, strong function, hot backup connection and parallel redundant connection, etc. The disadvantage is that when the capacity is less than Below 10kVA, the efficiency of the whole machine is not high, generally around 85%.
The above is the "classification of UPS power" for you. China Upsystem Power factory is a professional UPS power supplier. Our products have been exported to Mid- -east, South America, and Africa.ln Africa. Welcome Customers and friends leave us a message for more relevant product information.