The Ultimate Guide to Choosing vertiv liebert exs

Which Vertiv Liebert UPS System is Right for Your Data Center?

In any data center, ensuring continuous availability of IT infrastructure is of utmost importance. Any power outage or interruption can lead to significant data loss and impact your business negatively. Therefore, selecting the right uninterruptible Power Supply (UPS) system is crucial for the smooth functioning of your data center. Vertiv Liebert UPS Systems are known for their high efficiency and reliability, making them the go-to choice for many organizations.

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But with different models available in the market, choosing the right one can be overwhelming. In this article, we'll help you understand the different Vertiv Liebert UPS systems available and which one is best suited for your data center.

Liebert GXT5 UPS:

The Liebert GXT5 UPS is ideal for small to medium-sized data centers. It provides clean, stable, and reliable power while ensuring high efficiency. The system is highly scalable, offering up to 10kVA of power, with the ability to add external battery cabinets to extend runtime. The compact size of the GXT5 also means it takes up less space compared to other UPS systems.

Liebert EXM UPS:

If you're looking for a UPS system that can handle large-scale enterprise-level data centers, the Liebert EXM UPS is an excellent choice. This robust and highly scalable system offers up to 1.5MVA of power, making it suitable for mission-critical applications. The Liebert EXM UPS is also highly energy-efficient, reducing electricity costs while improving the overall performance of the data center.

Liebert NX UPS:

If you're looking for a UPS system that's both reliable and energy-efficient, the Liebert NX UPS is an excellent choice. The system provides high levels of protection against power outages and sags while ensuring high efficiency, reducing energy costs. The Liebert NX UPS is highly scalable, offering up to kVA of power and can be installed as a standalone unit or in a parallel configuration for redundancy.

Liebert ITA2 UPS:

The Liebert ITA2 UPS is ideal for computing environments, such as edge computing or small data centers. The system provides clean and reliable power and ensures high efficiency, reducing energy costs. The Liebert ITA2 offers up to 20kVA of power and can be configured as either a tower or rackmount, depending on your specific needs.

Wrap Up:

Selecting the right UPS system can be a daunting task, but understanding the different Vertiv Liebert UPS Systems available will make the process easier. Whether you need a compact system for a small data center or a highly scalable solution for a large-scale enterprise data center, Vertiv Liebert has a solution for you.

Contact us if you need assistance in selecting the right Vertiv Liebert UPS System for your data center. As a leading supplier of Vertiv products, we can help you choose the right UPS system based on your specific needs.

Uninterruptable Power Supply (UPS)

UPS topologies are defined by how power moves through the unit:

Online (Double Conversion) UPS—Online UPS systems, such as the Vertiv™ Liebert® GXT5 or APS, deliver continuous high-quality AC power to equipment with no break in output when transferring to battery. AC input power is converted to DC, then back to AC, supplying the load with continuous pure sinewave output. This provides power conditioning, zero transfer time to battery, tight output voltage regulation and better transient suppression than line-interactive units. Because these systems are more complex, they typically cost more than their Line Interactive counterparts. They are well suited for all IT applications, but really shine in applications with poor quality input power or highly sensitive loads.

Line Interactive UPS— A Line Interactive UPS, such as the Vertiv™ Liebert® PSI5, interacts with the incoming power by filtering noise, providing surge protection, and adjusting the voltage when necessary. Using a simple and highly reliable design, the line interactive UPS can handle most power issues in online mode. It will switch to battery when needed which results in a 4-6 millisecond break in power during the transfer. This break in power is called the “transfer time”. Typical IT loads have no issues with this duration and the transfer to battery will appear seamless. This technology is particularly effective in areas where outages are rare, but power fluctuations are common. They are a great cost-effective choice for most IT applications

Standby (offline) UPS—A standby UPS, such as the Vertiv™ Liebert® PST5, is a cost-effective choice for basic power protection. They provide basic filtering and surge protection. In the event of an over voltage, brown out, or black out situation they will switch to battery power until the event resolves. This results in a 6-8 millisecond transfer time, which is typically well tolerated by computer loads. Due to their basic design these units are smaller and less expensive that other types of UPS units, allowing the user to have backup power wherever they need it. They are a good choice for home applications such as desktop PC’s and modems, or business applications such as POS terminals and electronic sign controllers.

Battery life depends on several variables, including number of deep discharges, amount of time spent on battery, and (most importantly) temperature.

There are two different types of batteries used in Vertiv UPS products. Traditionally UPS units have used VRLA (Valve Regulated Lead Acid) batteries. This is the same technology as a car battery. They are reliable, affordable, and reasonably durable. The tradeoff is that they are bulky, extremely heavy, and have a limited temperature range.  The latest technology in UPS products is Lithium Ion batteries. This battery type can be found in cell phones, laptops, and some electric cars. Lithium Ion batteries are smaller, lighter, and longer lasting than VRLA. If your UPS is not specifically labeled as Lithium Ion, you can assume it has a VRLA battery.

VRLA batteries typically last 3-5 years in a 20-25°C (68-77°F) environment. Each 8°C (15°F) increase in temperature will reduce the lifespan of the battery by approximately 50%. This means that a battery might have a 4-year lifespan at 22°C (72°F), but less than 2 years at 32°C (90°F).

Lithium-ion batteries typically last about 10 years up to 25°C (77°F), and about 7 years while operating at 40°C (77°F). This makes them a much better choice for applications where cooling is less than ideal.

It is important to remember that the temperature inside the UPS will be warmer than the ambient temperature, and that heat can increase rapidly if there is a lack of cooling or air circulation. If you find that your batteries are not lasting as expected, check the temperature where the UPS is installed. You may find a need for additional cooling or ventilation.

Bypass is a mode of operation in which the input power bypass the UPS electronics and is passed directly to the load. Typically, this would be used during configuration, testing, or addressing a systems issue. There are two distinct types of bypass:

Internal Bypass: This means that power is still flowing through the UPS, but it is bypassing the power processing electronics, effectively passing directly from the input to the output of the UPS.

External Maintenance Bypass: This is an external piece of hardware. It either mounts to the UPS or is an entirely separate box. When a unit is in external bypass there is no power flowing in or out of the UPS. It is entirely separated from the load and electrical system. This allows you to service, upgrade, or replace the UPS with no effect on the attached load.

When a piece of IT equipment is first powered on, it typically takes a big gulp of electricity to get its power supply up and running. This is called inrush current. Once the equipment is fully powered up the power draw will drop down significantly to its steady state draw. Because of this you need to allow for a certain amount of excess capacity on your UPS to allow for the typical load as well as the inrush. If you do not have this excess buffer you may run into issues where the UPS is overloaded every time you try to turn on the attached load. This can result in dropped loads, which is exactly what we are trying to prevent.

We recommend that your UPS unit not be loaded to more than 80% capacity. This provides ample headroom for inrush current in typical IT applications. If you are selecting a UPS for a new install, we would recommend sizing it at around 50-60% capacity. This allows for potential inrush as well as any unexpected system expansion if you need to add another server or switch in the future.

For further assistance in selecting a Vertiv UPS, consult our product selector page:

https://www.vertiv.com/en-us/support/tools-applications/product-selectors/

A modular redundant UPS, such as the Vertiv Liebert APS, is comprised of Power, Battery, and Control modules. Each APS Power Module has a capacity of 5kVA. If the system has more power modules than necessary to support the load, a module can be taken offline for replacement without affecting the attached load. When we discuss levels of redundancy, we refer to the power capacity needed as “N”. A UPS solution with 1 more power module than needed to support the load would be referred to as “N+1” redundancy, 2 more power modules that needed would be “N+2”, etc. Customers seeking the highest level of redundancy may specify a “2N” solution, which would be a full duplicate system. In addition to providing redundancy for service, a Modular UPS solution also allows you to add additional power and battery modules and scale the capacity of the system as your needs grow.

Vertiv Uninterruptible Power Supply (UPS) Systems for the Network Edge

Supporting all the applications involved within data centres is coming a complex task. Then, when it comes to Edge computing, it can become even more complex with no on-site IT support to rely on.

Whilst Edge Computing can have many benefits, it makes it more important than ever to ensure you have network backup power. Outages are costly and damaging at the best of times, let alone without IT support on-site to rectify the issue immediately.

Edge Challenges

Limited Budget

Lack of skilled IT resources onsite

Little to no cooling

Space-constrained environments

Demand for high availability

Need for remote management

Q: So how can you ensure outages don’t happen?

A: An uninterruptible power supply (UPS), often known as a battery back-up, is a rechargeable battery used to back-up your main power feed. This seamlessly switches your devices from main power to the UPS when a power outage occurs to ensure the device can continue running as normal. They also help to protect against power fluctuations, surges, and other power problems.

The right UPS solution can provide:

Protection for your valuable business assets and data

Peace of mind regarding power management in remote locations

Improvements to business efficiency

Types of UPS Configurations

Great, so now you know why a UPS is helpful!

Next step is figuring out which UPS system configuration is best suited for your needs.

The system configuration of a UPS refers to how power moves through the UPS. Each technology has its own advantages depending on what you need a UPS for.

When selecting a UPS for your Edge environment consider the following:
1. Determine the size of the load the UPS will be protecting. This will let you know the UPS capacity you’ll be after.
2. Pure versus simulated sinewaves.
3. Runtime. This will relate to your UPS capacity vs load.
4. Installation requirements.
5. Environmental challenges.
6. Battery chemistry. Do you want a UPS with lithium-ion or lead-acid batteries.

But what are the types of UPS configurations? The three main types include online double conversion, line-interactive, and standby. Let’s see which type is best for you!

Online Double Conversion UPS

An online UPS system is often referred to as a double conversion UPS as it converts the incoming power from alternating current (AC) to direct current (DC) and then back to AC again.

AC power is clean and stable upon generation, but be subject to voltage sags, spikes, and complete failure during transmission. This can cause data loss, interrupt computer operations, or damage your equipment.

By converting back and forth between the currents, this UPS is able to increase the degree of isolation of the load from irregularities in the main supply.

Because the power is running continually through the UPS, the output produced is a perfect sine wave. The online double conversion UPS offers the highest level of security for your network, protecting the critical load from virtually all power disturbances.

Why it is right for edge?
Online double conversion UPS technology provides the highest level of power conditioning and protection for critical business IT systems.

Continuous, high-quality AC power to equipment with no break

Equipment protection from virtually all power disturbances

100% power conditioning

Zero transfer time to battery and no change in output voltage

Line-Interactive UPS

Get both power conditioning and battery backup in one with any line-interactive UPS system. This type of UPS technology is most effective in areas where outages are rare but power fluctuations are common.

Compared to offline systems, line-interactive UPS provide much better power fluctuation control. Their biggest advantage is the voltage boost circuitry and the range of input voltage the UPS is able to accept. The wider the range, the more total protection you have.

Why it is right for edge?

Provides both battery backup and power conditioning

Greater control over power fluctuations

Balance between reasonable protection and moderate operating costs

Typically used in rackmount applications below VA

Standby UPS

A standby UPS, or an offline UPS, is the most cost-effective UPS choice. It provides protection against power anomalies and most spikes, although it doesn’t have the abilities to maintain perfect power during minor sags and surges.

The key to offline UPS quality is the range of power the UPS will accept before switching to its battery backup. The wider the power range, the less drain it will have on the battery and therefore the more backup time it will provide when the power shuts off.

This type of UPS technology is best suited to devices under VA such as small offices, personal home computers, and other less critical devices. It will providee the runtime you will need to save work in progress and complete and orderly shutdown to avoid any work or data being lost.

Why it is right for edge?

Clamps down on excess voltage to protect against power spikes

Helps ensure continuity during more than 90% of outages

Built-in battery and inverter to convert DC power to AC

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Good option for those requiring lower power capacity and cost

Lithium-ion Batteries

Now you know the types of UPS configurations, it’s important to also know about the batteries!

Currently available are UPS systems with traditional VRLA lead-acid batteries or UPS systems with new lithium-ion batteries.

Lithium-ion batteries are often pushed aside due to the new technology seeming unpredictable, but they provide many advantages to UPS systems! They can provide twice the life expectancy of VRLA batteries, require fewer replacements, can withstand higher temperatures, and have quick recharge cycles. All of these benefits are ideal for protecting your critical infrastructure, and that’s only the beginning!

Lower Total Cost of Ownership (TCO)
Whilst you will need to invest more into a lithium-ion UPS initially, this beginning cost quickly offsets itself throughout the life cycle of the UPS. When you take into account the money you save on battery replacements and money saved on labour, the total cost of ownership is actually reduced by 50%!

Longer Life and Runtime
With a life expectancy of 8-10 years, lithium-ion batteries can last up to 4 times longer than VRLA systems. Additionally, they take less than 4 hours to recharge when needed.

Heat Resiliency
There are many environments that a UPS may be placed in that will have higher than average temperatures. Even within traditional office or data centre environments, the temperature surrounding multiple devices can heat up very quickly. Lithium-ion based UPS systems can withstand higher temperatures without facing any repercussions, helping you save on air conditioning and problems with you device.

Efficiency
In comparison to VRLA batteries, lithium-ion batteries are between 40-60% lighter and 40% smaller. This makes installation and maintenance significantly easier and more flexible.

So what UPS is right?

Now you know the different UPS options available to you it will be easier for you to find your perfect UPS! Using this helpful guide as a starting point, you can search through our Vertiv UPS systems to see which one will benefit you most!

Here’s a quick peak into the Vertiv UPS series available at Comms Express:

Vertiv UPS solutions

Vertiv Liebert® EXS UPS

This on-line integrated UPS allows quick and easy access to power vital systems. Standard configurations and optimised with a compact footprint offer reliable and economical power solutions.

Benefits:

Integrated solution supports faster deployments

Compact, high power density design offers a small footprint

Flexible UPS, power distribution and battery arrangements to meet capacity and runtime demands

Efficient operation saves energy

High power factor delivers more usable power

Easy to install

Integrated maintenance by-pass option ensures greater availability

Intelligent monitoring and management offers improved visibility and control

Buy Vertiv Liebert® EXS UPS

Vertiv Liebert ITA2 UPS

This space-saving UPS design can be installed in a rack or on the floor. With scalable battery run time, optional maintenance bypass cabinet, and output distribution pods, this reliable, energy-efficient Power Solution is flexible and always available when needed.

Benefits:

Flexible placement. Use inside a rack or in a tower configuration

Compact, high power density

Easy to install and manage

High power factor maximizes the usable power

Operates efficiently to save energy

Optimized maintenance bypass maintains power, even during servicing (optional)

Extended battery runtimes (optional)

Flexible, easy to configure power distribution

Buy Vertiv Liebert ITA2 UPS

Vertiv Liebert® GXT5 UPS

The Vertiv GXT5 is an online double conversion UPS solution with double premium power outage protection and continuous power conditioning. It is ideal for critical infrastructure, operating at high power efficiency.

Benefits:

Designed for high availability

User friendly operation and installation

Longer lifetime and run-time of the batteries

Optimized energy and capacity management

Seamless connectivity

Buy Vertiv Liebert® GXT5 UPS

Vertiv Edge single phase UPS

The Edge UPS family are line interactive sinewave UPS models that are highly reliable, efficient, manageable, and flexible.

Benefits:

High output PF=0.9

High efficiency, up to 98% in line mode

Colour graphic LCD display

“Green mode” operation

Advanced AVR protection with 2x boost and 1x buck tap

Remote connectivity via a network interface or serial connection

Input breaker device for additional protection

Buy Vertiv Edge single phase UPS

Vertiv™ Edge Lithium-Ion UPS

High-Performance Line-Interactive Power Protection for Servers and Networking Equipment

Protect your business-critical applications with both power conditioning and battery backup available with the Vertiv Edge Lithium-Ion Interactive UPS range.

Benefits:

A standard 5-year warranty provides peace of mind your investment is protected against potentially costly equipment failures.

Achieve the lowest total cost of ownership over the lifetime of the UPS with fewer battery replacements and up to 10 years of useable life with Lithium Ion batteries.

Hot-swappable user replaceable batteries increase the useable life of the UPS by allowing you to easily replace the batteries without disrupting power to connected equipment.

Internal batteries offer industry-leading runtime (up to 10 minutes at full load) to protect critical equipment during an unexpected power loss.

Lithium Ion battery technology degrades slower in high-temperature environments, supports up to 10 times more discharge cycles, and delivers faster recharge times compared to VRLA batteries.

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Working with our Vertiv Sales team enables complex designs to be configured to your unique needs. If you are an organization seeking technical guidance on a large project, Vertiv can provide the support you require.

Learn More

Many customers work with a Vertiv reseller partner to buy Vertiv products for their IT applications. Partners have extensive training and experience, and are uniquely positioned to specify, sell and support entire IT and infrastructure solutions with Vertiv products.

Find a Reseller

Already know what you need? Want the convenience of online purchase and shipping? Certain categories of Vertiv products can be purchased through an online reseller.

Need help choosing a product? Speak with a highly qualified Vertiv Specialist who will help guide you to the solution that is right for you.

Contact a Vertiv Specialist

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