What is the difference between EPS and UPS functions?
At the same time with the UPS regulator, filtering and other functions, some UPS failure or overload can be replaced by electricity when the bypass power supply.The backup voltage output fluctuates greatly. Between 170V-260V, the high speed relay is used to realize the conversion between the battery and the battery, and the conversion time is less than 10 milliseconds. Online always use the inverter circuit, the voltage stability is high, basically in the 220V + 5% range, the battery does not exist and the conversion time; power conversion using static bypass switch, switching time can reach microsecond.
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. The utility model 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.
Online 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 time.
Backup UPS in the city power is normal, directly from the city power supply to the load, when the city power beyond its scope of work or power failure, through the switch switch to battery inverter power supply. 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 Bo
UPS is the abbreviation of "UninterruptiblePowerSupply", which is often referred to as "UPS" uninterruptible power supply. The common UPS power supply on the market mainly has two types: Online (OnLine) and backup (OffLine).EPS emergency power supply system is the abbreviation of Emergency Power Supply. It is an emergency power supply that meets the special requirements of fire protection industry.
