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Distinguish between EPS emergency power supply and UPS UPS UPS (Part Two)



   What is emergency power?
   EPS emergency power supply It is also called EPS, EPS emergency power supply and fire emergency power supply. The new national standard is "fire emergency lighting and evacuation indication system". It is a kind of emergency power supply which is used in important buildings for electric power protection and fire safety. It is mainly composed of input and output unit, charging module, battery pack, inverter, monitor, output switching device and so on. It is widely used in energy-saving power supply, building lighting, road traffic lighting, tunnel lighting, electric power, industrial and mining enterprises, fire elevator, etc.
   What is UPS power supply?
   UPS uninterruptible power supply It is a system equipment that connects the storage battery (at present, many lead-acid batteries are replaced by lithium iron phosphate batteries) with the host computer, and converts the direct current into the commercial power through the module circuits such as the inverter of the host computer. It is mainly used to provide stable and uninterrupted power supply for single computer, computer network system or other power electronic equipment such as solenoid valve and pressure transmitter. When the mains power input is normal, ups will supply the load after stabilizing the mains power. At this time, the UPS is an AC mains voltage regulator, and it also charges the battery inside the machine. When the mains power is interrupted (emergency power failure), the ups will immediately supply the DC power of the battery to the load through the inverter zero switching method, so as to maintain the normal operation of the load and protect the load soft The hardware is not damaged. UPS equipment can provide protection for over voltage or low voltage.
   Difference between EPS emergency power supply and UPS power supply
   1. Different applications
   At home, EPS emergency power supply It is mainly used for the electric equipment of fire protection industry, emphasizing the function of continuous power supply.
   UPS uninterruptible power supply It is generally used for precision instrument load (such as computer, server and other IT industry equipment), which requires high power supply quality and emphasizes the requirements of inverter switching time, output voltage, frequency stability, output waveform purity, etc.
   2. EPS emergency power supply and UPS UPS UPS have different structure
   EPS emergency power supply Inverter redundancy is large, incoming and outgoing cabinets are in EPS, and motor load is started by frequency conversion. The enclosure and conductor have flame retardant measures, multi-channel mutual switching power, and can be linked with fire protection.
   UPS uninterruptible power supply The inverter redundancy is relatively small, has nothing to do with fire protection, no flame retardant, no switching function.
   EPS emergency power load is generally inductive and resistive. It can be equipped with motor, lighting, fan, water pump and other equipment. It is an emergency fire-fighting product and a special emergency fire-fighting lighting power supply with centralized emergency power supply.
   UPS UPS load belongs to capacitive load. The main equipment is computer, which is mainly used in large computer room to ensure uninterrupted power supply and voltage stabilization.
   3. Different functions
   EPS emergency power supply And UPS uninterruptible power supply Both of them have municipal power bypass and inverter circuit. The difference in function is: EPS emergency power supply has continuous power supply function, generally, the requirements for inverter switching time are not high, and the application in special occasions has certain requirements. It has multiple output and has monitoring and detection function for each output and single battery. Daily focus on bypass power supply, when the city power outage to inverter power supply, high power utilization.
   If the UPS power supply has only one total output, its three functions are generally emphasized: (a) voltage stabilization and frequency stabilization; (b) uninterrupted power supply with extremely high switching time requirements; (c) purification of commercial power supply. The power supply of double conversion circuit focusing on rectifier / inverter is converted to bypass power supply only when the inverter fails or is overloaded. The utilization rate of electric energy is not high (generally 80% - 90%).
   Understanding EPS
 Hb-e6000 series 10-400 kW EPS
   Understanding UPS
 Hb-s6000 series 100-600kva UPS

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