what is a online ups

What Is A 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- 

How does online UPS work?

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.

What does UPS online mean?

An Online UPS is a type of uninterruptible power supply that utilises either a double or delta conversion technology. With double conversion, network equipment does not receive electricity directly from the AC outlet. Instead, AC power travels to a rectifier, where it becomes DC power.

What is the difference between a standby UPS and an online UPS?

The primary difference between online UPS power and standby UPS lies in their operating modes. Online UPS power provides AC power through rectification and inversion circuits when AC mains power is available. Conversely, standby UPS directly supplies AC mains power to the load circuit when power is available.

How do I know if UPS is online?

Online (also called double conversion) is the type that only uses the input power to charge the battery and always has the DC power system active and powering the load. Line interactive is not the same thing as standby. A standby UPS just switches to battery when the power fails.

Why are online UPS costly?

The main difference lies in how they handle power. 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.

How long do online UPS last?

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.

Which is better, an inverter or UPS?

Both a UPS or Inverter can be used to provide backup power. The UPS is more expensive and designed for critical equipment. The Inverter is cheaper and cost-effective providing backup power to equipment that is not affected by voltage abnormalities and longer switching times.