3kva online UPS keeps its inverter in working condition. It first converts external AC power into DC power through a circuit, and then converts DC power into high-quality sine wave AC power through a high-quality inverter and outputs it to the computer.
On-line means that regardless of whether the grid voltage is normal or not, the AC voltage used by the load must pass through the inverter circuit, that is, the inverter circuit is always in working condition(types of ups online and offline). On-line UPS is generally a double conversion structure. The so-called double-conversion means that when the UPS is working normally, the electric energy is supplied to the load after being converted twice by AC/DC and DC/AC.
3Kva Online Ups Specifications
When the online UPS supplies power to the grid normally, the input voltage of the grid passes through a noise filter to remove high-frequency interference from the grid to obtain pure alternating current, which enters the rectifier for rectification and filtering, and converts the alternating current into smooth direct current, and then divides it There are two ways, one way enters the charger to charge the battery, the other way supplies the inverter, and the inverter converts the DC power into 220V, 50Hz AC power for the load.
The main function of 3kva online ups under power supply conditions is to stabilize voltage and prevent electric wave interference; in the event of a power failure, it uses a backup DC power supply (battery pack) to supply power to the inverter. Since the inverter is always working, there is no switching time problem, and it is suitable for occasions with strict requirements on the power supply.
One of the major advantages of online UPS different from backup is that the power supply lasts for a long time, usually several hours, sometimes as large as ten hours. Its main function is to allow you to work as usual in the event of a power failure(online UPS manufacturers-SCIENTEK ELECTRICAL). Obviously, Because of its special function, the price is obviously a lot more expensive. This online up is more suitable for industries such as a computer, transportation, banking, securities, communications, medical care, and industrial control because computers in these fields generally do not allow power outages.
Compared with backup UPS, online UPS has excellent output voltage transient characteristics. Generally, when 100% load is loaded or 100% load is reduced, the output voltage range of 3kva online UPS is about 1%, and the duration of this change is generally 1 to 3 cycles.