What are the differences between UPS power supply and EPS power supply?UPS is an uninterruptible power supply, mainly used to provide power protection, blocking the impact of frequency fluctuations of the utility power on the equipment. And EPS power supply is emergency power, the main function is to provide a certain period of power supply support after the utility is disconnected, their most obvious difference is that the UPS power supply cabinet power supply mode requires a very short switching time (0 ~ 10ms), EPS emergency power supply is relatively wide (0 ~ 4s);.
What is the difference between UPS power cabinets and EPS power cabinets? UPS power is short for Uninterruptible Power Supply and EPS power is short for Emergency Power Supply. Many people feel that there is no difference between UPS power cabinets and EPS power cabinets, and in the use of time interchangeable, but in fact, there are certain differences between these two types of power supplies, and this article will elaborate for you from several aspects.
UPS power cabinet and EPS power cabinet what is the difference?
1, UPS is an uninterruptible power supply, mainly used to provide power protection for important loads, including the elimination of various power disturbances in the grid, such as power outages, voltage fluctuations, frequency fluctuations, harmonics, voltage distortions, electrical noise, spikes, etc.. It is an internationally and nationally recognized product to protect important loads, with strict international and national standards.
2, EPS for emergency power supply, mainly after the utility power outage to provide a certain amount of power supply time to the load, therefore, it is intermittent from the utility power outage to have output again. Utility power is normal when there is utility power to the load, but not to deal with the various nuisances in the utility, somewhat like a backup UPS. but this product in China only in the fire law each with a definition, no clear explanation, there is no similar product in the international community, so there is no corresponding international standards and national standards.
3, UPS power supply cabinet power supply mode requires a very short switching time (0 ~ 10ms), EPS emergency power supply is relatively wide (0 ~ 4s)
4, UPS power supply cabinet output precision, fast conversion time, while the higher cost (about twice the EPS), usually large energy consumption (online), the host life is short (8-10 years), maintenance-free battery with UPS chassis and other components.
5, EPS is somewhat similar to the backup UPS, usually the inverter does not work, the utility power outage before the battery is put in. Generally do not have constant current, constant voltage processing of the power supply. The advantages are a simple structure, low cost, low energy consumption, no noise, long life of the host (15-20 years), can be adapted to inductive, capacitive and integrated load, when needed to achieve variable frequency soft start.
6, EPS only has a continuous power supply function, the general requirements for inverter switching time is not high (special occasion applications have certain requirements), can have multiple outputs and each output and a single battery with monitoring and detection functions, the daily focus on bypass power supply, utility power outages before switching to inverter power supply, high power utilization.
7, online UPS power supply has only one total output, generally emphasizing its three main functions.
Voltage and frequency stabilization; uninterrupted power supply with very high switching time requirements.
Purification of utility power, daily focus on rectifier / inverter double conversion circuit power supply, inverter failure or overload before switching to bypass power supply, power utilization is not high.
8, in Europe and the United States power grid and power supply in more perfect countries, in order to save energy, part of the UPS power supply cabinets have been used in places where the inverter switching time is very short (less than 10 milliseconds) to replace the EPS.
EPS power supply cabinet and UPS power cabinet price comparison
EPS emergency power supply brands are numerous, often small workshop production, due to its simple internal structure, the price is cheap, the production is not laborious, generally thousands of dollars can be bought.
UPS power supply cabinet can do a good job only a few large companies, which contains many listed companies. The requirements for the internal structure and even the structure of the components are very high. Many public companies, even at great expense to buy the original Swiss ABB products, only to compete for a few microseconds.
UPS in addition to the high factory price, the post-maintenance costs are also incredibly high, each company's annual maintenance costs for UPS is often up to hundreds of thousands of dollars.
The above is the difference between UPS power supply cabinet and EPS power cabinet, you all understand?EPS is an emergency power supply, is used for fire emergency equipment; UPS power supply is widely used, reliable quality, mainly to the server room and communications equipment.
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