Do you have the offline UPS?
UPS power supply is divided into online type, backup type and online interactive mode according to the working principle.1. backup type UPS: when the city power is normal, the power supply is directly supplied by the city to the load. When the power supply exceeds the scope of work or the power failure, the power supply is transformed into a battery by inverting the switch. The utility model is characterized in that the structure is simple, the volume is small, and the cost is low, but the input voltage range is narrow, the output voltage is stable, the precision is poor, and the switching time is also available, and the output waveform is generally Fang Bo2. line interactive UPS: in the normal electricity directly by electric power to the load when the power is low or high, through the UPS internal voltage regulator circuit voltage output, when power failure or abnormal, through the switch to battery powered inverter. Its characteristics are: wide input voltage range, low noise, small size and so on, but there is also switching time3. online UPS when power supply is normal, the rectifier provides DC voltage to the inverter by electricity from the inverter to provide AC power load, power anomaly in the city when the inverter powered by battery, the inverter always in working condition, ensure uninterrupted output. The utility model is characterized in that the utility model has the advantages of extremely wide input voltage range, no switching time, stable output voltage and high precision, and is especially suitable for occasions with high power supply requirements, but the cost is higher. At present, UPS with power greater than 3KVA is almost all online UPS.
UPS has the following basic functions:1. normal voltage, the voltage through the UPS voltage supplied to the load, the good performance of the UPS AC regulator itself is good; it is also in charge of the battery for storage, backup energy.2. when the grid voltage is abnormal (undervoltage, overvoltage, power loss, interference, etc.), the UPS inverter converts the DC energy of the battery pack into alternating current, which can maintain the power supply to the load.The 3.UPS automatically switches between the power grid and battery power to ensure uninterrupted power supply to the load. General computer equipment allows a small power interruption (within switching time 10ms), but the computer equipment and communication equipment precision is not allowed with intermittent power (switching time 0ms), it should be confirmed exactly how much time you need to switch UPS.
Uninterruptible power supplies: UPS[UninterruptiblePowerSystem (orSupply)]: a battery, inverter, and other circuitry that provides AC power to power grids during power outages.
