Xingyuan Electronics specializes in Power CE certification , lithium battery CE certification and other services to help Chinese products export to the world. Today, the focus and you introduce the difference between UPS power supply and EPS power supply and the scope of application, please see the detailed introduction below.
1, UPS classification
According to the working principle is divided into: offline, online.
According to the power supply mode is divided into: single-phase input single-phase output, three-phase input single-phase output, three-phase input three-phase output.
According to the power is divided into: 10kva minicomputer, 10KVA-100KVA medium-sized machine, 100kva above the mainframe.
According to the output waveform is divided into: square wave, trapezoid wave, sine wave.
2, backup and online UPS working principle
(1) Backup UPS(offline UPS)
When the mains is normal, the mains directly supplies power to the device. When the mains is disconnected, the battery inverter supplies power. Its characteristics are: simple structure, small size, low cost, but the input voltage range is narrow, there is a switching time, not suitable for equipment with high power quality requirements, usually used in personal computers.
(2) Online interactive UPS
When the mains is normal, the mains supplies DC power to the inverter through the rectifier, and the inverter supplies AC power directly to the device. At the same time, the charger charges the battery to keep the battery full capacity. The inverter is always in the working state to ensure uninterrupted output and there is no switching time. Suitable for equipment requiring high power quality.
1. Classification of EPS
According to the load type can be divided into: (1) emergency lighting type; (2) Emergency lighting and power hybrid type; (3) Power
1, Distinguish UPS and EPS by output
UPS power supply objects are mainly computers and network equipment, the load nature is low, the current UPS output power factor is 0.8. The EPS is mainly used for power emergency support, usually the load nature is inductive or capacitive. Some loads are required to be put into use after power failure, and all EPS must be able to provide a large impact current, usually requiring continuous power supply for more than 10 minutes at 120% load. The rated capacity of the UPS is measured in KVA and the rated capacity of the EPS is measured in KW.
2, UPS and EPS function difference
EPS and UPS both have mains bypass and inverter circuits, but EPS only has the function of continuous power supply, and the requirement for inverter switching time is not high. At present, most EPS also has the function of battery single detection. EPS inverter output after mains interruption, computer utilization rate is high.
The UPS generally emphasizes its three functions: frequency stabilization and voltage stabilization of the mains; Power equipment that requires very high switching times; Clean the mains. Daily focus on rectifier and inverter double conversion circuit power supply, energy utilization is not high. However, UPS is not only inverter power supply when the power is off, but also provides stable power output when the mains voltage deviation is large, surge and other abnormal conditions, which EPS does not have.
3, UPS and EPS in the application range of different
UPS is mainly used in computers, digital information systems and other loads that require high power supply quality.
About “ UPS power supply and EPS power supply difference and application scope ” Just a brief introduction here, I hope to help you. If you want to learn more < strong > < a href = "http://www.globalgd.com/services/" > power supply CE certification < / a > < / strong >, the knowledge of the lithium battery CE certification, welcome consulting xingyuan electronics.