At present, UPS power generally refers to static UPS power supplies, which can be classified into three categories according to their working mode: backup, online interactive, and online. According to the size and application field of UPS power supply, there are the following classification methods:
Classified by UPS power size:
UPS power systems can be classified into three zones based on their applied power: large, medium, and small. ① A low-power UPS power system is defined as a UPS power product with a power of less than 3kVA; ② A medium power UPS power system is defined as a UPS power product that is greater than or equal to 3kVA and less than IOkVA; A high-power UPS power system is defined as a UPS power product that is greater than or equal to I0kVA. UPS products and technical situations are divided into different power ranges:
Products with power (P)<3KVA: Products with power less than 3KVA mainly include backup and interactive UPS with 500VA-2KVA, as well as online UPS with 1-2KVA. The UPS in this power range has relatively low technical requirements and fierce market competition. Apart from APC and SANTAK as the main manufacturers, many other domestic small and medium-sized UPS manufacturers are among the internationally renowned brands. According to statistical data from both domestic and international markets, the market sales proportion of these products has been showing a slight downward trend. 3KVA<power (p)<10KVA products: UPS in this power range are mainly online products, as well as a small number of 3KVA backup and interactive products. The technology involved is relatively complex, and the quality control of the products is somewhat difficult. In addition to foreign brand products, domestic mid to large scale UPS manufacturers have products in this power range. From the statistical data of domestic and international markets, the market sales proportion of these products is relatively stable.
10KVA power<50KVA products: UPS in this power range is an online product that involves complex technology, and quality control of the product is quite difficult. In addition to foreign brand products, only medium-sized and above UPS manufacturers in China have products in this power range. From the statistical data of domestic and international markets, the market sales proportion of these products is relatively stable, with a slight increase.
Power (P)>50KVA products: UPS in this power range is an online product that involves complex technology. The quality control of the product requires a high level of expertise and comprehensive strength. Apart from foreign brand products, only a few large-scale UPS manufacturers in China have products in this power range. According to statistical data from both domestic and international markets, the market sales proportion of these products has steadily increased.
According to the classification of UPS application fields, UPS power systems can be divided into two major categories: information equipment UPS power system equipment and industrial power UPS power system equipment.
The first type of information equipment is UPS power supply system equipment, mainly used for security protection issues in computer information systems, communication systems, data network centers, etc. in the information industry, transportation, finance industry, aerospace industry, etc. As an important peripheral in computer information systems, communication systems, data network centers, etc., UPS power supply is very important in protecting computer data, ensuring the stability of grid voltage and frequency, improving grid quality, and preventing the harm caused by instantaneous power outages and accidental power outages to users.
The second type of UPS power supply system equipment for industrial power is mainly used in the fields of power, steel, non-ferrous metals, coal, petrochemicals, construction, medicine, automotive, food, military and other industries in the industrial power equipment industry. It serves as an AC/DC uninterruptible power supply equipment for all power automation industrial system equipment, remote execution system equipment, high-voltage circuit breaker opening and closing, relay protection, automatic devices, signal devices, etc., ensuring the reliability of industrial automation power supply. Industrial power uninterruptible power supply is a high-end product in the field of uninterruptible power supply products, involving power electronics technology for high-power (possibly up to megawatt level) energy conversion, digital control technology, AC power parallel redundancy technology, active harmonic suppression technology, high-power product manufacturing technology, etc. Obviously, general power supply enterprises cannot enter this field. Only enterprises that already have high-power power electronics technology and series product development, production, and service capabilities, and have accumulated corresponding industrial application experience, can do a good job in the design, production, and market service of industrial power uninterruptible power supply systems.