What is an offline UPS and how does it work?

Post time: 2025-09-28 00:27:00

Table of Contents

  1. Introduction
  2. What is an offline ups?
  3. How Does an Offline UPS Work?
  4. Kelida Company Solutions
  5. References

Introduction

Uninterruptible Power Supply (UPS) systems are critical components in power reliability infrastructures. Depending on the application, various UPS configurations are implemented to provide robust power protection. This article delves into the specifics of the Offline UPS, its working mechanism, and solutions offered by Kelida Company.

What is an Offline UPS?

An Offline UPS, also known as a standby UPS, is a type of power protection system that provides emergency power to a load when the input power source fails. In structure, an offline UPS typically includes a rectifier, inverter, battery, and static switch, making it a cost-effective solution for protecting PCs and other consumer electronics from power disturbances.

  • Rated Power: Typically ranges from 500 VA to 2,000 VA.
  • Switching Time: Usually less than 10 milliseconds.
  • Typical Use Cases: Home offices, small business applications, and electronic devices.

How Does an Offline UPS Work?

In an Offline UPS configuration, the primary power source is directly connected to the load under normal conditions, which reduces energy consumption as the energy transfer bypasses the inverter circuit. Let's break down the working mechanism step by step:

  1. Normal Operation Mode:

    During standard operations, the UPS remains in standby mode, with the AC input power directly supplying the load. Concurrently, the UPS’s battery is kept charged through the rectifier circuit.

  2. Power Failure/Disturbance Mode:

    Upon detecting a power failure or any voltage fluctuations exceeding the preset thresholds, the UPS switches to battery mode. The stored DC energy in the battery is converted into AC power via the inverter circuit and delivered to the connected load.

  3. Return to Normal Mode:

    Once the main AC supply stabilizes, the UPS automatically switches back to standby mode, reconnecting the load to the utility power and recharging its battery.

Overall efficiency of Offline UPS systems ranges from 90% to 95%, reflecting minimal losses during normal operations.

Kelida Company Solutions

Kelida Company specializes in providing advanced power protection solutions, including a dedicated range of Offline UPS systems. Their offerings are designed to deliver reliable performance and cost-efficiency.

  • KL1000 Series: Features include a 1000 VA/600 Watt capacity, 8 ms typical switching time, and an intelligent battery management system that ensures extended battery life.
  • KL2000 Series: Offers enhanced capacity with a 2000 VA/1200 Watt rating, suitable for more demanding applications while maintaining a compact design.

With a focus on innovation, Kelida’s solutions integrate cutting-edge technology to improve the power conditioning capabilities of its UPS systems, thus ensuring optimal performance over extended periods.

References

  1. Smith, J. (2022). Understanding UPS Systems: A Technical Guide. Power Systems Journal.
  2. Brown, L. (2023). The Role of Offline UPS in Power Backup Strategies. Electrical Engineering Review.
  3. Kelida Company Website. (2023). https://www.kelida.com/solutions.
Kelida brand gives you a solution