What is the main difference between a line-interactive and double conversion UPS?

A double-conversion on-line UPS continuously operates with efficiency between 85% and 92%, depending on the particular design, compared to 96% to 98% for a line-interactive UPS. A 90% efficient 1000 W UPS for example, fully loaded, will consume 100 W of power continuously.

What is difference between online UPS and line-interactive UPS?

When not operating from the battery, line- interactive UPS systems typically regulate output within ±8-15% of the nominal voltage (e.g. 120, 208, 230, or 240 volts), whereas online UPS systems typically regulate voltage within ±2-3%.

Which UPS is called double conversion UPS?

An online UPS system is usually called double conversion as well because incoming power is converted to direct current (DC) and then converted back to AC. This AC-DC/DC- AC design ensures an increased degree of isolation of the load from the irregularities on the main supply.

What are the three types of UPS?

There are three types of uninterruptible power supplies: static, dynamic (rotary), and hybrid. Static uses power electronic converters, dynamic uses electromagnetic engines (generators and motor), and hybrid uses – you guessed it – a combination of both static and dynamic.

What is true double conversion?

Double conversion UPS modules provide uninterrupted power to critical loads. They do this by filtering and converting incoming utility power to DC power. They then convert the DC power to a perfect AC output from the inverter. The inverter is also supported by a DC source that may include batteries or flywheels.

How long is the transfer to battery time for a double conversion online UPS?

The typical transfer times are: Standby UPS: 5-12 ms, – average 8 ms. Line interactive UPS: 3- 8ms – average 5 ms. High efficiency double conversion UPS: 1-3ms.

Is line-interactive UPS better?

At the most basic level, line-interactive UPS systems are less expensive than on-line UPS systems (approximately 20 to 40% less, depending on the model and manufacturer), but they also provide less protection than on-line UPS systems.

What are the two types of UPS systems?

The varied types of UPSs and their attributes often cause confusion in the data center industry. For example, it is widely believed that there are only two types of UPS systems, namely standby UPS and online UPS.

What is UPS block diagram?

The block diagram is shown below. When there is any power failure, the rectifier have no role in the circuit and the steady power stored in the batteries which is connected to the inverter is given to the load by means of transfer switch. During a main power breakdown, this UPS system operates with zero transfer time.

What are the disadvantages of UPS?

Disadvantages of UPS

• Cost. The major concern of UPS system is the cost involved in it.
• Maintenance. Using a UPS system, also does bring many considerations because of the maintenance involved in it.
• Durability.
• Device Protection.
• Power Consumption.

Which is better double conversion UPS or line interactive UPS?

Additionally, an online, double conversion UPS has an internal static bypass, ensuring that if your UPS experiences a catastrophic failure or requires maintenance, you may be able to keep your critical loads online during repair or replacement. Head-to-Head: Which UPS Comes Out on Top?

Why do we need an online double conversion system?

Additionally, an online double conversion UPS system contains a static bypass switch meaning it may remain online and supporting the critical load during maintenance, repair or replacement. The online technology is necessary for backing up equipment that is very sensitive to power fluctuations.

What are the topologies for UPS double conversion?

Two of the most common UPS topologies are line interactive and online double conversion.

What’s the difference between on line and line interactive UPS?

It’s helpful to explore the differences between line-interactive and on-line models to understand the trade-offs involved. Note: If you need a UPS system larger than 5,000 VA (4,000 watts), an on-line UPS is your most likely choice.