s the UPS power supply only in the battery when the power outage or the mains voltage is below the input range?
This is not necessarily, on-line UPS in the normal electricity, the rectifier by the mains to provide DC voltage to the inverter work by the inverter to the load to provide alternating current, in the mains abnormalities, the inverter by the battery to provide energy, The inverter is always in working condition to ensure uninterrupted output. It is characterized by a very wide input voltage range, no switching time and high stability of the output voltage stability, especially for high power requirements of the occasion, but the higher cost. At present, the power is greater than 3KVA UPS are almost all online UPS
Yes, only in the outside of the mains no electricity or lower than the UPS set by the low voltage value will be switched to the UPS inside the battery-powered, the mains power supply is still the case of normal use of electricity, UPS internal is a breaker To control the switch.
This statement is not precise enough.
When the mains input is normal, the UPS will be powered by the mains supply to the load, this time the UPS is an AC mains regulator, and it also charge the battery to the machine; when the electricity interruption (accident power failure) , The UPS immediately to the battery DC power, through the inverter zero switching method to continue to supply 220V AC load, so that the load to maintain normal work and protect the load soft, the hardware is not damaged.
UPS is the abbreviation of "Uninterruptible Power System", which can ensure that the computer system will continue to work for a period of time after the power outage so that the user can save the file so that the user will not cause the power outage Affect work or loss of data.
