What types of UPS power supplies?

At present, UPS power supply generally refers to static UPS, which can be classified into three categories: backup, online interactive, and online according to its working mode. 1. Backup UPS: When the mains power is normal, the mains supply power to the load directly. When the mains power exceeds its working range or the power fails, it is converted to battery inverter power supply through the transfer switch. Its characteristics are: simple structure, small size, low cost, but the input voltage range is narrow, the output voltage is stable and accurate, there is a switching time, and the output waveform is generally square wave 2. Online interactive UPS: directly by the mains when the mains is normal The mains power supplies power to the load. When the mains power is low or high, it is output through the UPS's internal voltage-stabilizing circuit. When the mains power is abnormal or out of power, it is converted to battery inverter power supply through the transfer switch. Its characteristics are: a wide input voltage range, low noise, small size, etc., but there is also a switching time 3. When the online UPS is normal, the mains rectifies and supplies the DC voltage to the inverter to work. The inverter supplies AC power to the load. When the mains power is abnormal, the inverter supplies energy from the battery, and the inverter is always in working condition to ensure uninterrupted output. Its characteristics are that it has a very wide input voltage range, no switching time and high output voltage stability and precision, which is especially suitable for occasions with higher power requirements, but the cost is higher. At present, almost all UPSs with power greater than 3KVA are online UPSs. How long can a household UPS uninterruptible power supply generally last for 20 minutes? A small home computer UPS uninterruptible power supply can generally last for 20 minutes. Large-scale kW UPS can be equipped with battery packs according to requirements, generally more than 1 hour to 10 hours. Ordinary household UPS uninterruptible power supply is ten minutes to half an hour, it is recommended that 500V can be used for 10-15 minutes after power failure. The continuous working UPS power supply has high requirements for heat dissipation, and the UPS of seven or eight hours or more is for the server. The length of the UPS uninterruptible power supply power supply time after a power failure is determined by its backup battery. Generally, the standard UPS batteries are equipped according to the full-load power supply of the UPS output power for one hour. You only need to use it for a computer. The maximum power of a home computer is 300W. If the device uses 500W (considering the large startup current), it can meet the power supply conditions for two hours. According to the battery capacity supplied, it is calculated by doubling the battery power time by two hours. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: What are the applications of lithium iron phosphate batteries in UPS power supply systems?