UPS power supply, that is, uninterruptible power supply, is the battery (mostly lead-acid maintenance-free batteries) connected to the host, through the host inverter and other modular circuits will be converted from DC to urban electricity system equipment.
UPS power supply role:
Mainly used to give a single computer, computer network system or other power electronic equipment such as solenoid valves, pressure transmitters, etc. to provide a stable, uninterrupted power supply.
When the utility power input is normal, the UPS will be the utility voltage stabilized supply to the load, at this time the UPS is an AC voltage regulator, it also charges the battery to the machine;
When the utility power interruption (accidental blackout), the UPS will immediately the battery's DC energy, through the inverter switching method to the load to continue to supply 220V alternating current, so that the load to maintain normal operation and protect the load software and hardware. The UPS is usually able to provide protection against overvoltage or undervoltage.
Extended information:
Precautions for using UPS power supply:
1, UPS should be used in a well-ventilated environment, conducive to heat dissipation, and keep the environment clean.
2, do not take inductive loads, such as money counting machines, fluorescent lamps, air conditioning, etc., so as not to cause damage.
3, UPS output load control at about 60% of the best, the highest reliability.
4, UPS with too light a load (such as 1000VA UPS with 100VA load) may cause deep discharge of the battery, will reduce the service life of the battery, should try to avoid.
5, appropriate discharge, help the battery activation, such as long-term non-stop utility, every three months should be artificially disconnected from the utility with a UPS load discharge, which can extend the service life of the battery.
6, for most small UPS, go to work and then open the UPS, boot to avoid starting with a load, off duty should be turned off the UPS; for the network room UPS, because most of the network is 24 hours a day, so the UPS must also be run around the clock.
7, UPS discharge should be charged in a timely manner to avoid battery damage due to excessive self-discharge.
Baidu Encyclopedia - UPS Power Supply