UPS is an uninterruptible power supply, which is a system device that connects the storage battery (mostly lead-acid maintenance-free storage battery) with the host computer and converts DC power into commercial power through module circuits such as host inverter.
EPS, emergency power supply, is an emergency power supply for emergency lighting, emergency lighting and fire-fighting facilities in today's important buildings.
2. Different components
UPS power system consists of five parts: main circuit, bypass, battery and other power input circuits, rectifier (rec) for AC /DC conversion, inverter (inv) for DC/ AC conversion, inverter and bypass output switching circuit and energy storage battery.
EPS is mainly composed of input unit, output unit, charging module, battery pack, inverter, monitor and output switching device. The system can provide emergency power supply in case of emergency.
Extended data:
The advantage of UPS lies in uninterrupted power supply. When the AC input of the commercial power is normal, UPS rectifies the AC into DC, and then converts the DC into stable AC without impurities for subsequent loads.
Once the AC input of commercial power is abnormal, such as undervoltage, power failure or abnormal frequency, UPS will activate the standby energy storage battery and the rectifier circuit of UPS will be closed. Accordingly, the DC of the battery will be converted into a stable AC without impurities, which will continue to be used by the following loads.
EPS aims at solving the first-class load power supply equipment such as emergency lighting, emergency lighting, fire-fighting facilities, etc., and provides an independent loop emergency power supply system, which can provide emergency power supply in an emergency, solve the problem of lighting power consumption or the lack of a second power supply for only one commercial power supply, or form a second power supply instead of a generator set, or be used as an occasion requiring a third power supply.
Baidu encyclopedia -EPS
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