From the UPS uninterruptible power supply rotating generator in the 1960s to the static fully electronic circuit with intelligent degree, and it is still developing. UPS power supply generally refers to static UPS power supply. According to its working mode, it can be divided into three categories: backup, online interactive and online. According to the size of UPS power supply and the application field, there are the following classification methods:
1. According to the UPS power size classification, the UPS power system can be divided into three partition categories according to its application power: large, medium and small. The low-power UPS power system is defined as: UPS power supply products with power less than 3kVA; the medium-power UPS power system is defined as: UPS power supply products greater than or equal to 3kVA and less than 10kVA; the high-power UPS power system is defined as: UPS power supply products greater than or equal to 10kVA.
2. According to the UPS application field classification: UPS uninterruptible power supply system equipment for information equipment. In recent years, UPS power supply systems have played an increasingly important role in the IT industry and are hailed as the guardian of computer information. After the world entered the information age, the security of information has been widely concerned by people. Therefore, in this era, it is natural that the development trend of UPS has attracted great attention from the industry. Information communication UPS power supply system is mainly used in: information industry, IT industry, transportation, financial industry, aviation ** industry and other computer information systems, communication systems, data network centers and other security protection issues. As an important peripheral of computer information systems, communication systems, data network centers, etc., UPS power supply is very important in protecting computer data, ensuring the stability of power grid voltage and frequency, improving power grid quality, and preventing instantaneous power outages and accidental power outages from causing harm to users.
UPS power supply system equipment for industrial power. Industrial power UPS power supply system equipment is mainly used in: industrial power equipment industry power, steel, non-ferrous metals, coal, petrochemical, construction, medicine, automobile, food, military and other fields, as all power automation industrial system equipment, remote execution system equipment, high-voltage circuit breaker opening and closing, relay protection, automatic device, signal device, etc. AC and DC uninterruptible power supply equipment to ensure the reliability of industrial automation power supply.
The uninterruptible power supply for industrial power is the most advanced product among the 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 companies cannot enter this field. Only companies 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. The UPS power supplies used by traditional UPS manufacturers in these places are often UPS uninterruptible power supply products that are adapted to the industrial natural environment, rather than real industrial power equipment that adapts to the industrial electrical environment and inductive power load characteristics.
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