>Product Overview

ESD three-in, single-output power UPS is specially designed for power plants and substations, with online zero-delay conversion function, and is 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 220V AC (or three-phase 380V) is isolated, and the power supply is supplied to the inverter after rectification filtering. If the DC panel is powered off, it will still be powered by the AC input; 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 the standard sine wave waveform of 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.

◇Delayed soft start function: It has a complete delayed soft start function, which can greatly reduce the impact on equipment and power grid during system startup.

◇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.