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What to do if you don't know how to purchase a suitable UPS power supply? Learn in minutes after reading these. With the increasing variety of UPS power supplies in the market, the products and prices vary greatly. If choosing the right UPS power supply becomes a problem, I believe friends who do not understand the situation will have no way to start. Therefore, today through this article, I will tell you how to choose and purchase the right UPS power supply.

What is UPS? What is its working principle and application scope?

UPS， It is a power supply guarantee device that can ensure the load equipment carried by it is not affected by external power system interruptions for a period of time. The working principle of UPS is like a reservoir. When the external power supply is normal, UPS not only supplies power to the load normally, but also converts a portion of the electrical energy into chemical energy for storage; Once the external power supply is suddenly interrupted, UPS will immediately start the inverter device to quickly convert chemical energy into electrical energy and continuously supply power to the load to ensure the normal operation of the load equipment.

With the continuous development of digital computer technology, its application scope has gradually penetrated into important departments such as computer rooms, data centers, special vehicles, industrial control, banking, power, special industries, finance, and communication, which also puts forward more stringent requirements for the stability and reliability of UPS power supply.

How to choose and purchase a suitable UPS power supply?

At present, the common working modes of UPS power supplies in the market include backup, online interactive, and online dual conversion, as follows:

1. Backup UPS, without voltage regulation, has a conversion time between mains power and battery. It is generally used for personal computer protection or in situations where UPS power performance requirements are not high. This type of UPS generally has a smaller power range;

2. Online interactive, without voltage regulation, with conversion time between mains and battery, but with voltage regulation function. It is generally used to protect servers and network equipment. The power range of this type of UPS is generally below 5KVA.

3. Online dual conversion UPS, with no conversion time between mains power and battery, is generally used to protect servers, network equipment, and other devices in the computer room. This type of UPS has power ranges from small to large, and is currently more common in the market.

The performance of the above UPS power supplies, from high to low, is as follows: online dual conversion, online interactive, and backup. Price is generally proportional to performance. Do we have to choose an expensive UPS? The answer is negative.

As our title suggests, we need to choose the UPS that suits us best. If it is for personal computers, you can choose a backup UPS. If it is for servers, you should choose between online interactive and online dual conversion. The selection should be made according to the following conditions:

To determine if your device requires high-precision power supply, you can check the markings on the nameplate of the load device or inquire with the equipment manufacturer. If high-precision power supply is required, an online dual conversion UPS should be selected.

Secondly, it depends on the type of load. Some loads do not allow power outages, such as relay devices or switch signal devices. If you equip this type of equipment with an online interactive UPS, there is a possibility that the load may experience power outages or misoperations when switching between UPS mains and battery. Therefore, for this type of equipment, an online dual conversion UPS should be selected.

If your device does not have the above two requirements, you can continue with the following steps.

If the quality of the local power grid is relatively good, that is to say, the voltage fluctuation is small during normal times, then online interactive UPS can be considered for selection. However, if the quality of the local power grid is poor and voltage fluctuations are large, we recommend using an online dual conversion UPS, as this type of UPS has better adaptability to mains power than online interactive ones.

If you require a longer delay, you can consider choosing a dual-purpose machine with standard length or buying a UPS without built-in batteries. Both UPS power supplies can be equipped with original batteries or third-party batteries to achieve a longer delay.

Generally speaking, there are two installation methods for UPS power supplies, one is tower installation and the other is rack installation. You can choose according to your data center environment or on-site environment, and it should be noted that not all UPS power supplies support both installation methods at the same time. In most cases, rack UPS can also be installed in a tower manner, but tower UPS may not be able to be installed in a rack manner because tower UPS may not be able to install rails. Therefore, after confirming the UPS power range and working mode, it is necessary to confirm whether the UPS power supply can meet your installation requirements.

Choosing a good brand of UPS is very important. A good brand of UPS ensures product quality. The after-sales service is thoughtful and timely. The service life of a UPS is at least 3 years, so it is best to choose a brand that can provide a 3-year warranty service. We are a leading power supplier in the lithium-ion battery UPS industry, trustworthy and a choice.

After making the above choices, you may need to consider other issues, such as whether you want network management, if so, you may need to buy a network management card, and whether you want to handle node output. These are usually additional features that can be selected and purchased according to your needs.

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