The difference between UPS power supply and EPS power supply lies in the object of their application, the power supply selection method and the allocation of the technical design index of each component.
1, the two applicable objects are different, EPS is mainly to cope with sudden grid failure, can instantly provide escape lighting and fire emergency, to ensure that the power protection and fire linkage, to protect the user's life, the product needs to pass the Ministry of Public Security's fire safety certification supervision and accept the installation of the site of the fire acceptance. The UPS is only used to protect user equipment or business from economic loss, the product needs to be certified by the Ministry of Information Industry.
2, the two power supply options are different, UPS is the inverter priority to ensure power supply, EPS is the utility priority to ensure energy saving. Of course, the two in the rectifier/charger and inverter design indicators are different.
The EPS adopts offline power supply, which is the last power supply guarantee. When the utility power failure, if the EPS can not be emergency power supply through the battery, it is like a dummy in general, the consequences will be unimaginable. The UPS is used online, even if there is a failure, you can alarm in time, coupled with the utility as a backup guarantee, the user can grasp the fault in time and eliminated, will not cause greater losses to the accident.
3, the two components of the technical design indicators assigned differently, EPS is mainly for power protection and fire safety to provide power, the nature of the load both inductive, capacitive and rectifier non-linear loads, and some of the loads are out of the utility power before putting into operation, so the EPS requires EPS can provide a large inrush current, a good output dynamic characteristics, and a stronger overload resistance.
And UPS is mainly to provide power to computers and network equipment, the nature of the load (input power factor) is not much difference.
Extended information:
The UPS is designed to meet the requirements of China's power grid environment and the reliability of power supply of the network monitoring and networking systems, medical systems, etc., and overcome the problems caused by centralized power supply of medium and large-scale computer network systems. The computer network system centralized power supply caused by the increasingly harsh environment of the power supply grid, the new digital technology developed by the third generation of industrial frequency pure on-line intelligent UPS. dc power supply, is to maintain the formation of a steady current in the circuit device. Such as dry batteries, storage batteries, DC generators.
UPS in Chinese means "uninterruptible power supply", it can guarantee that the computer system continues to work for a period of time after the power failure to enable users to emergency storage, so that users do not affect the work of the power failure or loss of data.
Reference:
Baidu Encyclopedia-UPS Power Supply
Baidu Encyclopedia-EPS Power Supply