What Is Online Ups ?

What Is Online Ups ?

A UPS (Uninterruptible Power Supply) is a crucial component of any power backup system. It ensures that critical equipment and systems remain operational in the event of a power outage or other power-related issues. Two main types of UPS systems are available in the market – On-Line UPS and Off-Line UPS. Understanding the difference between these two types of UPS systems is essential for choosing the right one for your needs.

When it comes to Uninterruptible Power Supply (UPS), there are two main types: Online UPS and Offline UPS. Although both types supply power to devices during power outages, they have distinct differences. The primary difference between Online UPS and Offline UPS is the way they provide power. Online UPS utilizes a rectifier and inverter combination to simultaneously power the load and charge the battery, ensuring that the battery is ready to supply power when needed. On the other hand, Offline UPS supplies AC power directly to the load by switching ON the transfer switch, and only uses the battery backup in the event of a power failure. Another crucial difference is that Online UPS requires a large heat sink.

The rectifier in the Online UPS supplies power directly to the inverter as well as the battery. As a result, heat dissipation will be significant. As a result, an Online UPS requires a larger heat sink than an Offline UPS.

Online UPS

The Online UPS, consisting of a rectifier, battery, and inverter, is directly connected to both the AC mains and the load. The rectifier circuit converts the AC power into DC power, which is used to charge the battery and supply the inverter circuit that powers the load. The transfer switch is always in the ON position, allowing power to be continuously delivered to the load from the rectifier and inverter circuits, without any interruptions in case of a power outage.

Benefits of Online UPS

• One of the significant advantages of using Online UPS is that there is no need to switch between the two power paths during a power outage, thus ensuring that power is continuously delivered to the load.
• Another benefit is that Online UPS provides proper isolation between the load and input circuits, resulting in distortion-less signals.
• Since the inverter is always in the ON position, power is continuously available to the load, resulting in zero transfer time.

Drawbacks of Online UPS

• Designing an Online UPS is complex, as it requires a large heat sink.
• The instantaneous supply of power to the battery backup and inverter circuit in Online UPS leads to increased power dissipation.
• The cost of designing Online UPS is higher than that of Offline UPS.

FAQ – about Online Ups

1.What does online UPS do?

Online UPS takes the incoming AC mains supply and converts it to DC which feeds the battery and the load via the inverter. If the mains supply fails, then the batteries feed the load via the inverter with no interruption to the output supply at all.

2.Does online UPS need battery?

The primary difference between Online UPS and Offline UPS is the way they provide power. Online UPS utilizes a rectifier and inverter combination to simultaneously power the load and charge the battery, ensuring that the battery is ready to supply power when needed.

3.How UPS online works?

The online UPS takes the incoming AC power supply and converts it to DC using a a rectifier to feed the battery and the connected load via the inverter so that no power transfer switches are necessary.

4.How long do online UPS last?

eight to ten years

The general lifespan of a UPS electronics is eight to ten years, Batteries last for three to five years depending upon site condition. A UPS is rated by its VA or watt rating. The higher the watt rating, the longer the lifespan of your backup power supply will be.

5.Can UPS work without electricity?

A UPS (Uninterruptible Power Supplies) has a built-in storage battery. In the unlikely event of a power outage, it automatically switches to power supply from the storage battery, so it can continue to supply electricity to each device without interruption.

6.What is the efficiency of UPS online?

UPS efficiency is based on how much of the original incoming power is needed to operate the UPS. For example, an uninterruptible power supply with a 95% efficiency rating will have 95% of the original input powering the load and connected systems, with the remaining 5% energy “wasted” running the UPS.

7.Why online UPS is expensive?

Online UPS continuously converts power, while Offline UPS switches to battery mode during a power interruption. Why is Online UPS more expensive? Due to its continuous conversion mechanism and better protection features, Online UPS systems tend to be more costly.

8.How to maintain online UPS?

Annually: A thorough temperature and humidity check and a full battery inspection should be completed annually. Biannually/Semi-annually: Test switches, breakers, and fans semi-annually. You should also clean and vacuum the UPS system's interior to remove dust and debris build-up.

9.What is the advantage of UPS?

UPS systems provide critical backup power to keep essential equipment operating and decrease the risk of downtime. Unlike traditional power sources such as generators, these machines switch on seamlessly and eliminate any effect of power interruption.