UPS, uninterruptible power supply, is a constant voltage and constant frequency uninterruptible power supply containing an energy storage device and an inverter as the main component. It is mainly used to power computer terminals, network servers, data storage equipment, and communication equipment. , ATM machines, emergency lighting, fire safety alarm systems, medical equipment, control equipment and other emergency protection systems.

UPS is a system device that connects the battery to the host and converts DC power into mains power through module circuits such as the host inverter. The transformer is an important part of the UPS power circuit. When the grid voltage is normal, the UPS stabilizes the mains power. The voltage is supplied to the load. At this time, the battery in the machine is charged through the transformer voltage regulation and rectification circuit. When the mains power is interrupted (accidental power outage), the UPS immediately converts the DC power from the battery to DC through the inverter switching conversion method. Convert to AC, and adjust the voltage to the grid voltage through the transformer to continue supplying AC power to the load, so that the load can maintain normal operation and protect the load software and hardware from damage.

The function of UPS transformer:

1. It can reduce the zero-ground voltage and optimize the UPS terminal power supply network. Installing an isolation transformer on the UPS inverter output can isolate the electrical connection between the input and output, thereby effectively reducing the zero-ground voltage at the output end.

2. It can filter out harmonics at the load end and improve the quality of power supply. The isolation transformer itself has inductance characteristics. The output isolation transformer can filter out a large number of low-order harmonics at the load end, reduce high-frequency interference, and can greatly attenuate high-order harmonics. .Using a power isolation transformer can effectively suppress noise interference from the AC power supply and improve the electromagnetic compatibility of the equipment.

3. It can enhance the overload and short-circuit protection capability to protect the load and the UPS host. When the UPS encounters a large short-circuit current during normal operation, the isolation transformer will delay the impact and damage of the short-circuit current on the load and the inverter, thus protecting the load. The role of UPS host.

Transformer for inverter Specification model: EI7645 Rated power:95VA Rated input:AC 210V Rated output:AC 23.8V\/4A Working frequency:50\/60Hz Insulation level: CLASS F Altitude: less than or equal to 1000 Winding material: copper