This series of power UPS systems employs CPU control, utilizes high-frequency carrier technology and IGBT power devices, and features double conversion, online operation, and zero-conversion characteristics. When the mains power is normal, single-phase 220VAC (or three-phase 380VAC) is isolated, rectified, and filtered to become DC. This DC is then converted to AC by an inverter before being supplied to the load. If the AC mains input is abnormal or experiences a power outage, the backup 110VDC or 220VDC DC power supply is used for inverter power supply via reverse-blocking diodes. When the DC power supply is undervoltage or experiences a power outage, the static switch switches to bypass power supply; when the mains power returns to normal, it automatically switches back to mains inverter power supply. If the inverter is overloaded or malfunctions, it switches to bypass power supply and simultaneously issues a warning signal.

◆Double-conversion online operating mode, pure sine wave output

◆Three-port electrical isolation

◆CPU intelligent detection and control

◆Static switch with zero-interruption switching

◆Passive dry contact and RS232/485 monitoring

◆Multiple protection functions including overvoltage, undervoltage, overcurrent, overheating, and short circuit

◆LCD and LED operation and monitoring interface

◆Adopts standard power cabinet design; intuitive mechanical meter indication

The DL series UPS is an online sinusoidal uninterruptible power supply system designed by our company specifically for the power sector. It is widely used in data centers, subways, highways, low-voltage electrical rooms, hospital medical equipment, large machinery, industrial equipment, power plants, substations, distribution stations, etc.