>Product Overview

EDD single-in, single-output power UPS is specially designed for power plants and substations, with online zero-delay conversion function, mainly used in places with high load voltage requirements, such as power telecontrol, RTU, power carrier, monitoring, etc.

The working principle of the special UPS for electric power is as follows: when the mains power is normal, the single-phase 22OV AC (or three-phase 380V) is isolated, and the power supply is supplied to the inverter after rectification and filtering, if the AC input is powered off, the DC screen provided by the power system will supply power to the inverter through the anti-reverse second tube, and then power supply to the important load after output isolation. If the inverter is overloaded or faulty, it switches to bypass power supply by static switch.

>Characteristics:

◇Improve the quality of power supply; Through the double isolation of input and output and the double conversion working mode, the output becomes a standard sine wave waveform with voltage and frequency stabilization. It is not affected by changes in its input power supply.

◇Mains power-off protection: If the input power supply is powered off, the UPS is powered by the DC screen provided by the power system (DC110/220V), and the load power supply is uninterrupted.

◇Improve noise suppression: Due to the use of isolation transformer and AC-DC-AC conversion mode, the clutter in the input power supply is effectively filtered out, so that the load can get a pure power supply.

◇Internal installation of backstop two tubes: The DC input side of the UPS is connected to the DC bus through the backstop two pipes, which can prevent the DC bus voltage from being higher than the voltage of the DC input side and backfill the DC screen, which plays a role in protecting the DC screen.

◇Isolation between AC bus and DC bus: shielding the interaction between AC bus and DC bus.

◇Delay soft start function: It has a complete delay soft start function, which can greatly reduce the system start.

◇Alarm and protection function: It has a variety of alarm methods, which can prompt timely, accurate and detailed alarms through sound, light, LCD, passive fault contacts and communication transmission, so as to improve the reliability of the system and help maintenance personnel locate and eliminate faults accurately and quickly.

◇Protection function: with input reverse connection protection, input under-voltage protection, input over-voltage protection, output overload protection, output short-circuit protection, over-temperature protection functions.

◇Communication function: with RS232/485 communication interface, it can communicate with the host computer.