UPS full form is Uninterruptible Power Supply. These are innovative systems that serve as backup power sources. UPS systems are available in two types – online and offline. The latter has been around for years. However, online UPS systems are gradually taking over with the various benefits they offer. If you’ve been looking for a UPS system, you must know why an online UPS is more advantageous than offline. It will help you make a beneficial, visionary, and informed decision.
What is an Online UPS?
An online UPS supplies power to the AC load during normal circumstances. On the other hand, during a power failure, it uses an inverter to supply AC power. Thus, you don’t have to switch to keep the output power supply ON. An online UPS eliminates delays in switching between sources, ensuring an uninterrupted power supply for every second!
What is an Offline UPS?
An offline UPS ensures a direct power supply to the AC load from the AC mains during normal operation. Its inverter powers the AC load from the DC battery. However, as the system has two separate supply lines, you should switch the output supply between the two sources. The operation isn’t as automated and quick as it is in the case of an online UPS system.
Online UPS vs Offline UPS – Key Differences
Let’s look at some significant differences between online UPS and offline UPS. It will help you determine why online UPS systems are a more competent choice.
| Parameter | Online UPS | Offline UPS |
| Power Quality | An online UPS offers a higher power quality with minimal voltage variations. It filters out noise, spikes, and surges, thus facilitating a stable and clean power supply. | An offline UPS comes with basic surge protection and filtering. However, the power output quality is usually lower than an online UPS. The system provides clean power only when it is running on battery. |
| Continuous Power Supply | An online UPS ensures constant power supply by continuously converting incoming AC power to DC and then back to AC. | The system switches to battery power only when it detects a major power outage or voltage drop. Thus, a brief interruption of a few milliseconds becomes inevitable. |
| Switching Time | Online UPS doesn’t involve any switching time as it constantly supplies power from the battery, even in the presence of the main power. | On the other hand, an offline UPS has a switching time of usually 2-10 milliseconds. Although milliseconds may sound trivial, the difference can be critical for sensitive equipment with zero tolerance to power interruptions. |
| Voltage Regulation | An online UPS has a double conversion design that delivers precise voltage regulation. It maintains a consistent voltage level no matter the input fluctuations. | Offline UPS systems have limited voltage regulation. It depends on the main power supply for voltage stability. It can become a significant concern in areas with meager power quality. |
| UPS Price | With all the benefits an online UPS offers, the cost is usually higher than its offline counterpart. However, one should look at the value it delivers, which makes the cost worth. | An offline UPS is more affordable. Hence, it can prove a cost-effective UPS alternative for fundamental power protection requirements. |
| Battery Longevity | The batteries are constantly used. The continuous use can cause quicker wear and tear. Nevertheless, the system comes with an advanced battery management system that optimizes the battery life. | The batteries are used only during power outages. Hence, the battery life is usually more under normal circumstances. |
So, you’ve now seen why an online UPS system is better than an offline one. However, if you are now wondering which one to choose, EnerTech has got you covered! We are one of the leading online UPS manufacturers in India with a broad array of online and industrial UPS products to serve varying applications.
Our online UPS systems are designed to meet industrial and residential power needs efficiently and safely. They pack numerous contemporary features and functionalities that make them a prudent choice amidst power supply uncertainties. Explore our online UPS system product range and email us at sales@enertechups.com to navigate our products with our sales team.
