When Purchasing a Smaller UPS, Why Are There Different Technologies? Where Are They Best Used? |
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All three basic uninterruptible power supply (UPS) technologies have their place in protecting today’s distributed IT infrastructure especially on the network edge. Selecting a UPS requires an examination of a number of factors: load size, location and criticality of the equipment to be protected, and budgetary considerations. |
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Online Double Conversion
During transmission and distribution, AC power is subject to voltage sags, spikes and complete failure that may interrupt computer operations, cause data loss and damage equipment. When it comes to safeguarding critical IT loads, only online double conversion technology protects fully against all these power problems, providing the highest levels of security for networks.
An online UPS system is usually called double conversion, because incoming power is converted to 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. 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. If the main AC input fails, the rectifier drops out of the circuit and the batteries keep the power flowing to the device connected to the UPS. When AC input power is restored, the rectifier resumes carrying most of the load and begins charging the batteries.
Because power runs through an online UPS continually, output is a perfect sine wave. This means the quality of power from an online UPS is significantly better than that of other technologies.
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The APS is a modular online double-conversion UPS, scalable from 5 to 20kVA N+1. The pay as you grow design of the Liebert APS simplifies the capacity planning process and provides budget flexibility. The hot-swappable power and battery modules ensure your critical IT applications are always protected from power disruptions, fluctuations, and outages. |
*Coming by the End of the Year*
Lithium Ion Batteries
The Vertiv™ Liebert® GXT5 UPS is an online double conversion UPS solution which offers premium power outage protection and continuous power conditioning in a compact and flexible rack/tower design. This single-phase UPS family provides superior protection and remote management capability, making it ideally suited to protect critical infrastructure in both centralized and edge network applications. The GXT5 offers a scalable battery runtime solution through matching external battery cabinets.
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Line-Interactive
Line-interactive UPS systems provide both power conditioning and battery backup. This technology is particularly effective in areas where outages are rare, but power fluctuations are common. Line-interactive UPS systems support a wide range of input voltage fluctuations before switching to battery backup.
The critical advantage of line-interactive UPS is the voltage boost circuitry and the range of input voltage that that UPS accepts. The wider the range, the more total protection you will have.
When AC input power fails, the unit’s transfer switch opens and the power flows from the battery to the UPS output. With the inverter always on and connected to the output, line-interactive UPS provides additional filtering and yields reduced switching transients when compared to a standby UPS. Line-interactive UPS systems are typically used in rackmount applications below 5000VA.
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Lithium-ion is a giant leap forward in UPS battery technology and the Liebert® PSI5 Lithium-Ion line interactive UPS is at the top of the class. It delivers up to 50% lower total cost of ownership vs. comparable VRLA battery models, in a smaller, lighter package. The Liebert® PSI5 UPS offers faster recharge times, up to 10x more charge/discharge cycles, and can operate at higher temperatures with no degradation in performance. And it comes with a 5-year warranty, making it a worry-free option. |
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Offline/Standby/Battery Backup
Offline UPS, also called standby UPS or battery backup, is a cost-effective choice. An offline UPS protects against most spikes, but doesn’t maintain perfect power during minor sags and surges.
The key to offline UPS quality is the range of power the unit will except before switching to battery backup. The wider the range, the less drain on the battery and the more backup time available when the power shuts off. The more times the UPS switches to battery backup, the shorter the battery life.
This technology is best suited for devices under 1500VA such as small offices, personal home computers and other less critical applications. Offline UPS is a good option for those requiring lower power capacity and cost.
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Provides battery backup for computers, monitors, routers, modems, gaming consoles and other electronics, allowing time for an orderly shutdown during a power outage, or enough time to carry through brief outages. With 5 available receptacles, two surge-only and three surge with battery backed outlets, your devices are protected from potential damage. The Vertiv™ Desktop UPS is an economical and reliable choice to protect your equipment and keep you connected. |
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Select, Compare and Configure All Vertiv UPS Power Supplies Here
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Vertiv™ VRC-S
Edge-Ready Micro Data Center System
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Now that you've decided what UPS technology you need, where are you going to put it?
Easily put IT infrastructure where you need it with the Vertiv™ VRC-S. This pre-integrated, enclosed micro data center is designed to be up and running at an edge application in days. This solution incorporates a rack power distribution unit (PDU), embedded monitoring software, and the Vertiv™ VRC self-contained cooling kit in an enclosed standard IT edge rack.
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Access, Inc. is Wisconsin, Michigan, and NW Ohio's premier source of Heating, Ventilating and Air Conditioning (HVAC) and critical support equipment and services.
We work hand in hand with business owners, contractors, value added resellers, and engineers, helping them apply our products and services to solve their HVAC and critical support problems in the most reliable and economic way.
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Our Mission:
Ensuring uptime with market-leading, reliable and
performance-driven solutions.
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| Access Inc. | 866-402-2237 |
| 844 Ehlers Road, Neenah, WI | 23400 Commerce Drive, Farmington Hills, MI 48335 |
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