Tripp LiteSU3000RTXL3U 3000VA 2400W UPS Smart Online Rackmount 110V / 120V USB DB9 3URM, 9 Outlets

Works as advertised although the runtime is exaggerated a bit.

GREAT PRODUCT FROM TRIPPLITE THEY ARE DEPENDABLE AND EASY TO INSTALL THE PACKAGING WAS GREAT AND IT CAME REALLY FAST

Overall this seems to be a well-made and designed unit but it does have some drawbacks with functionality. Also, based on my own experience combined with other reviewers reports, there may be issues with unit-by-unit uneven longevity. I say this however while acknowledging that each installation is unique and many other factors can contribute to or be the cause of failures. Still at this price point, the unit should be nearly bulletproof (and foolproof).This UPS with 3 optional 3RU battery packs provide uninterruptible conditioned power to a residence’s lighting, networking. a couple convenience outlets for device charging and security equipment. The configuration uses an automated transfer switch capable of managing power from dual inputs. The house is in mountains where power outages are fairly frequent in storms. When power fails, the lights donn’t even blink. We have occasionally lost power without even knowing it. The battery maintains power for nearly a full 24-hour day without starting the generator. The transfer switch design allows other circuits to be powered if needed though, of course, doing so shortens run-time.I find the. status display confusing to read and not in a very logical layout. The load and battery level are presented in 25% increments which really isn’t super-useful when you know your’re only somewhere between ¾ and overload or between ¼ and drained. The latter is particularly true when the unit can’t display load when on battery (that I could figure out).There is one design problem we encountered. Even though the nominal capacity is much higher, certain tools and appliances running at loads as low as 1K will put the unit into a “fault” indication state on the appliances start-up draw. This is true even though the transfer switch also provides protection by limiting draw by the circuit the UPS’ capacity. Fault status seemed to universally occur if a small space heater (750w - 1000w) happened to be connected to a UPS-powered receptacle though total continuous draw on the circuit was never greater than 1200 watts. Fault occurred regardless of whether utility power was supplying the UPS. The fault is electronic. Per Tripp-Lite support, the unit has no automatic fault reset function nor can a fault be reset from the unit itself (front or rear). It must be disconnected from the power supply and reconnected. In practice this information appeared correct.After a little over a year in service, the UPS stopped outputting power. The input unit-mounted breaker remains un-tripped. The output breakers may both be tripped but the design makes it difficult to know. If they are tripped, neither will reset. Since Normal load on the device is 200 watts and limited to the USS’ continuous-load specification via automatic load-shedding in the transfer switch. Another reviewer described exactly the same symptoms as those I saw: “ no error code only a brief, erratic clicking of the internal power relays when powered on and very slowly spinning cooling fans”. Shortly after, the unit would not power on at all. A multimeter showed no power from the leads that charge the batteries and all batteries depleted to 1/2 to 1/3 of their 72 volts. I believe the UPS’ power supply failed. It stopped charging batteries and they drained until the UPS first cut off the output and then cooling fans ran the batteries power levels down to a level too low to allow the UPS to function at all. That is only a guess that fits the facts.I have owned Tripp Lite equipment for years and they have always been very supportive in instances of failure, usually promptly sending a replacement unit. I’ve reported the problem and Don’t yet know the outcome, but will update this when I do. It’s a little ironic that the very system meant to protect against power outage was the very reason the lights and network went out and high winds forecast tonight. It may be an isolated failure, but even if the UPS is replaced, it will cast a shadow of doubt that means I will never feel quite as protected using it.

I've purchased three of these units, all for providing power to expensive chemical analysis instrumentation within a university lab. The first unit lasted 9 years without even needing battery replacement, eventually failing with an error code pertaining to an electronics failure. The second unit failed after only 4 years, giving no error code only a brief, erratic clicking of the internal power relays when powered on and very slowly spinning cooling fans. The third has currently been running for 3 years. Other than my concerns with the longevity of the more recently manufactured units, I've been happy with their performance. They do a great job of providing continuous power regardless of the line interruptions, from simple power outages to brown-outs and the dreaded power "stutters". I never bothered with the software Tripp Lite provides. I use the 28 AH battery pack BP72V28RT-3U in conjunction with this UPS.