I’ve not reviewed too many items on Amazon, but feel compelled to say something about the Liebert UPS I purchased recently. I’ve purchased and used many UPS systems over the years, from many manufacturers - from small power strip style UPS systems for protecting individual office PC’s, to large rack mounted UPS systems for powering 72” equipment racks. Out of the box this UPS is one of the better built units I’ve seen. The enclosure is metal, and feels very solid. All outlets are UPS protected, without any wasted on “surge only” protection, which is a refreshing change if you’ve ever had a computer accidentally plugged into a non-battery backed outlet (I’ve done it!). This is also the first unit I’ve seen that comes with both a floor stand and rack mounting hardware, even including rails. The typical UPS at any price point is either rack mount or floor standing – not both. This is a great model for the small office that may need a UPS for an office server, that can grow into a 72” rack as your needs expand.
As far as functionality goes, the unit includes both serial and USB monitoring cables, and a CD with documentation and automatic shutdown software for Windows and Linux. I didn’t need the included software, as I found that Network UPS Tools (NUT), included in my Ubuntu 16.04 server installation, had no problems recognizing this UPS using the usbhid-ups driver.
When the time comes to replace the batteries 3 to 5 years down the road, the batteries in this unit are hot swappable, from the front, meaning that you won’t have to take your systems down or remove the UPS from the rack to perform that basic maintenance.
All in all I am very impressed in the solid construction and performance of this UPS in the week I’ve been using it, and I look forward to it doing what all good equipment does – do its job for many years to come, so that I can basically forget its there!
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From the manufacturer
Technical Specifications
- Line Interactive Topology
- Advanced Pure Sine Wave Waveform
- 83 to 159 VAC Voltage Range w/o Battery
- 10ft Attached Cord
- 120 VAC Voltage
- 4-6 Milliseconds Transfer Time
- 5 Hours Recharge Time
The Liebert PSI Battery Backup/UPS
A Pure Sine Wave, AVR Line Interative, Compact 2U, Rackmount/Tower Convertible UPS System
Designed to support active Power Factor Correction (PFC) power supplies, IT applications, home electronics, and other critical technology, the Liebert PSI UPS provides reliable power protection for servers, network workstations, routers/switches, media closets, gaming PCs/consoles, smart thermostats, smart home surveillance/ security and other electronic equipment. The PSI UPS prevents virtually all power disturbances and damages caused by power outages, brownouts, sags, surges, or noise interference. Protect your infrastructure and extend the life of your investments with the Liebert PSI UPS system.
Reliable UPS Protection to Keep Your Electronics or Network Up and Running
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0.9 Output Power FactorThe Liebert PSI operates at a higher output power factor, which provides users with more usable power and less power waste. With more usable power, the PSI is capable of servicing more critical loads or devices than UPS systems with lower output power factors. |
Vertical or Horizontal SetupThe Liebert PSI’s LED display panel rotates 90° to make the readout of the display easy to see in both rack (horizontal) and tower (vertical) configurations. The UPS also offers multiple audible and visual alarms to immediately alert users to an input voltage fluctuation, output overload, low battery, or replace battery condition. |
AVR Line InteractiveAutomatic Voltage Regulation (AVR) circuitry compensates for fluctuations in utility power, such as sags and brownouts, without battery operation. This technology allows the Liebert PSI to reserve battery life, optimizing performance during power outages. |
Advanced Pure Sine WavePure Sine Wave technology provides a smooth voltage which extends the life of the connected equipment, while Simulated Sine Wave supplies a rough voltage and diminishes equipment life. By supplying a pure sinewave output when on battery, the Liebert UPS decreases the electrical noise and provides consistent quality output power to the connected equipment. |
Common Applications
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Smart Home AutomationPrevent damage to smart security/surveillance systems, voice control devices, and other vital smart home technology. The Liebert PSI safeguards your home automation investments during power disturbances and allows for the safe shutdown of all equipment in the event of a power outage. |
MediaProtect valuable entertainment equipment such as media closet electronics, high-end gaming PCs/consoles, home theaters systems, recording studio gear, and more. The Liebert PSI allows users to save progress during power loss, while safeguarding expensive electronics during utility power fluctuations. |
Small BusinessComplete an ongoing sale at checkout and allow customers to continue using free Wi-Fi, even during power fluctuations. The Liebert PSI allows business owners to cater to customers confidently and keep vital systems running, while protecting equipment from harmful power disturbances. |
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| PS1000RT3-120 | PS1500RT3-120 | PS2200RT3-120 | PS3000RT3-120 | PS1500RT3-120XR | PS1500RT3-120XRW | |
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| Price | — | $499.94 | — | — | — | — |
| VA/Watts | 1000VA/900W | 1500VA/1350W | 1920VA/1920W | 3000VA/2700W | 1500VA/1350W | 1500VA/1350W |
| Runtime at Half Load/ Runtime at Full Load (in minutes) | 11 min / 4 min | 10 min / 3 min | 11 min / 4 min | 10 min / 3 min | 13 min / 5 min | 13 min / 5 min |
| Input Connection | NEMA 5-15P | NEMA 5-15P | NEMA 5-20P | NEMA L5-30P | NEMA 5-15P | NEMA 5-15P |
| Output Connection | NEMA 5-15R (8) | NEMA 5-15R (8) | NEMA 5-15R (6), NEMA 5-20R (2) | NEMA 5-15R (6), NEMA 5-20R (2), NEMA L5-30R (1) | NEMA 5-15R (6) | NEMA 5-15R (6) |
| 2-Year Warranty | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Extended Runtime Capability | ✓ | ✓ | ||||
| Remote Management | Optional | Optional | Optional | Optional | Optional | Included |
Compare with similar items
This Item  Vertiv Liebert 1500VA 1350W 120V Advanced AVR Line-Interactive UPS, Pure Sine Wave, 2U Rackmount/Tower, Supports Active PFC (PS1500RT3-120) |  |  |  |  |  | |
| Price | $499.94 | -68% $559.00 New Price: $1,749.01 | -10% $189.95 List: $209.95 | -33% $549.99 List: $825.00 | -19% $169.99 List: $210.00 | $277.57 |
| Delivery | Get it May 8 - 16 | — | Get it as soon as Monday, May 6 | Get it May 8 - 16 | Get it as soon as Monday, May 6 | Get it as soon as Monday, May 6 |
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| Sold By | UPSBatteryCenter | InStock901 | Amazon.com | UPSBatteryCenter | Amazon.com | Amazon.com |
| power outlets | — | — | 12 | 6 | 10 | 10 |
| runtime | 3 minutes | 84 minutes | 3 minutes | 6 minutes | 3 minutes | 4.1 minutes |
| size | 1500VA | SMT2200RM2U | 1500VA NEW | 1500VA/1350W | 1500VA/900W | 1500VA |
| battery charge time | — | 6 hours | 8 hours | — | 12 hours | 16 hours |
| cable length | 72 inches | — | 6 feet feet | 6 feet feet | — | 6 feet feet |
| maximum surge rating | — | 530 joules | 1500 joules | — | 316 joules | 1080 joules |
| wattage | 1350 watts | 1980 watts | 900 watts | 1350 watts | — | 900 watts |
| voltage | 230 volts | 120 volts | 120 volts | 120 volts | 120 volts | 120 volts |
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