Reserve type
1. The backup UPS directly supplies power from the mains power to the load when the mains power is normal, and switches to battery inverter power supply through the transfer switch when the mains power exceeds its working range or power outage. The structure is simple, small in size, and low in cost, but the input voltage range is narrow, the output voltage stability accuracy is poor, there is a switching time, and the output waveform is generally square wave. Backup UPSSwitching times are generally less than 10 millisecondsTherefore, it is not suitable for use in places where critical power supply cannot be interrupted. However, the switching time is actually very short, and the switching power supply of the computer or the power equipment itself should be able to maintain about 10 milliseconds when the power is cut off, and the power equipment generally does not have problems because of this switching time.
Inline
2. When the mains power is normal, the online UPS is rectified by the mains power to provide DC voltage to the inverter to work, and the inverter provides AC power to the load. It is characterized by a wide input voltage range, no switching time and high output voltage stability accuracy, which is especially suitable for occasions with high power supply requirements, but the cost is high. At present, almost all UPSs with a power of more than 3KVA are online UPS.
Online interactive
3. The online interactive UPS directly supplies power from the mains power to the load when the mains power is normal, and when the mains power is low or high, it is output after voltage regulation through the UPS internal voltage regulation line, and when the mains power is abnormal or power outage, it is converted to battery inverter power supply through the transfer switch. It has the characteristics of a wide input voltage range, low noise, and small size, but it also has a switching time.
Comparison chart
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Posted on 11/18/2024 10:26:46 AM
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Landlord|
Posted on 11/18/2024 8:03:44 PM
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