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An In-Depth Look at Tripp Lite’s High-Capacity 3-Phase Rack ATS

Title An In-Depth Look at Tripp Lite’s High-Capacity 3-Phase Rack ATS
Duration 12:06 (mm:ss)

Hi I’m Dave Slotten, VP of Product Marketing at Tripp Lite, here we introduce Tripp Lite’s patent-pending 3-Phase Rack ATS for 208V environments.

This is a product that has great appeal for cloud providers that are deploying high volumes of front-end web servers, Hadoop nodes where you have monolithic hardware delivering vast shared resources of compute power and the resiliency of those systems, even at the rack level, is substantial. The overall compute mission continues regardless of the failure of a rack element or even an entire rack in that mission.

Traditionally, high-density applications are powered by redundant PDUs. Single-phase PDUs just don’t get you where you need to go above 5kW, multiple circuits of single-phase just not really practical, very few people do that, so you shift to 3-phase. But even in 3-phase, to get up to the 30- 50- 60-amp input levels, which drives up to 17kW, you’re dealing with large PDUs and these PDUs occupy space in the back of the rack and for these cloud applications people are finding that it’s just not really the way to go.

Redundant power above 5kW, here we show a traditional approach with dual power supply equipment, dual PDUs fed by A/B power feeds, a rack ATS at the top of the rack, may be involved as well to deliver redundant power to a single corded solution. At these density levels it’s probably not the case but we mention it regardless.

Tripp Lite’s breakthrough solution brings A/B power into a rack ATS, at the bottom of this illustration, distributes power through a vertical PDU and on to equipment that has been chosen deliberately to feature single power supplies. The reason for that will become clear.

High-density loads, eliminating the second power supply achieves tremendous amounts of savings, at 100 300 more for a secondary power supply, multiplying that by dozens of devices in a cabinet you get up to very substantial capital cost reductions.

Power cords accompany those secondary power supplies, those go away. If you had a rack ATS for your top of rack network switch, that goes away as well because no everything is redundantly powered by a single vertical PDU in this ATS scheme.

High-density loads with single power supplies can also operate at a higher efficiency point. As you can see in this illustration, you can by running at a 50% level as opposed to a 20-25% level, by taking what two power supplies used to power and putting them on a single power supply, you move anywhere from 1-4% higher in a typical efficiency curve. That also allows you the opp. to perhaps select, because we’re talking about scale and volume here, a relatively less expensive power supply so where traditionally used two titanium power supplies to achieve an operating efficiency point, perhaps you can slide back to a single platinum power supply operating at a higher efficiency point and still achieve the same efficiency of those titanium power supplies operated at a lower loads may have delivered. something to think about.

When you aggregate all of these savings, here we show three columns, a 30, 50 and 60 amp input arrangement, aggregate the related power and cooling savings across these power levels and over 5 years you can see very substantial operating costs savings in addition to the capital cost savings we mentioned before.

So high-density loads with single power supplies, the benefits can be obvious, eliminating the hardware costs of the secondary power supply, operating at higher efficiency, using less space in the rack for PDUs and power cords, over a traditional solution with two vertical PDUs, simplifying cable management, improving airflow and organization, a single device to manage for network management as opposed to two devices, and even reduces rack weight and floor loading by eliminating that second power supply, multiplying that weight savings by dozens it may have seismic implications for your data center.

So deploying single power supply equipment in a date center application like this is only possible because we can now maintain redundant power to those power supplies because of the nature of the 3-phase rack ATS. Pulling together all the capital and operational savings, here we have at 60-amp power levels, over $17,000 in savings over 5 years, that would obviously be somewhat less in a 30 or 50 amp application but this is something to seriously considering if you are deploying volume hardware at scale for data center, cloud computing, what have you.

What makes it new? We utilize a combination of TRIACs and electromechanical relays. A TRIAC is a solid state highly-reliable component but it is not particularly efficient. Relays are not terribly fast or as reliable as a TRIAC because they’re not a solid state device. But used in combination, there’s a tremendous efficiency and reliability achievement here that is powerful and appropriate for your data center. We are the first to provide this transfer time with 3-phase inputs across 3-phases we’re transferring less than 6 milliseconds, so this is very much scaled to power supplies that are in your servers that are tolerant of 20 milliseconds typically. We are the first to accommodate A/B sources that are not phase-synchronized, more on that in a moment. Designed to last as long as a typical rack PDU, you’re not going to shift to this if it’s not going to last as long as what you’re used to buying and of course operating with very high-efficiency, that’s a given in this green age.

3-phase transfer time. Here we show primary to secondary with synchronized phases you can see less than 6 milliseconds of transfer time in the yellow band in these slides, going back from secondary to primary you can see at 0 crossing we are making these transitions when we go back to primary, very controlled, very reliable, no arcing, no worries about component damage in the process.

What about unsynchronized sources? In any data center you’re going to have unsynchronized sources particularly in 3-phase. We have to deal with that, we have dealt with that. Here we show primary to secondary transition, again achieved in under 6 milliseconds. Now in this next slide, going back from secondary to primary, that’s secondary on the left, primary on the right, you can see very clearly that these waves are not synchronized as they meet in the middle of that yellow band, you can see very clearly these are unsynchronized input phases and we deal with that very nicely, again at 0 crossing, very high reliability and very quickly. All 3 phases here have transitioned under 6 milliseconds.

Reliability and efficiency are a given in any data center application. Tripp Lite’s 3-phase rack ATS delivers on that front. These are field-tested, proven, thousands deployed in high-density data centers today and operating at a very very high efficiency above 99%.

Features of the ATS--two components are involved. A 1U ATS mounts toolless in your cabinet, has a display on the front of the device that delivers a number of metrics about which phase is available, which phase is preferred, power metrics, power factor, kilowatts, amps, volts, by phase, by circuit, on and on you can scroll through this and see all of this is reported via the network management card on the rear of the unit. That bottom photo shows dual inputs, output circuit breakers and of course an output cord that delivers power to a chosen vertical PDU. Used in combination, this is the 3-phase ATS system. A 1U ATS and a vertical PDU at the back of your rack.

Models and specifications. Again, choose a 30, 50 or 60 amp input be that L15-30 or L21-30, and the 30 amp levels pair it with a vertical PDU of your choosing, whether that’s all C13 or a combination of C13s and C19s or a combination we’ve not yet made to your liking, let us know what you need, we’ll deliver it for you.

To recap, Tripp Lite’s 3-phase 208V ATS is a patent-pending solution that can provide up to 17kW of redundant power to single or dual power supply applications. It saves money through lower hardware costs and reduces power and cooling costs if you choose to use single power supplies in your application it combines solid state TRIAC switching with relays to deliver fast, reliable high-efficiency operation, and this transfer mechanism is proven in the field and even deals with phases that are not synchronized. Nobody has done this. We’ve done it. Rethink what you’re doing in your next application.

Take this for a test drive, we can give you a no-obligation evaluation unit, put it through its paces for 60 days send it back if you don’t want it. Talk to us. Let us know your thoughts on this subject, your thoughts on this platform. We think it opens up new opportunities for you if you’re operating at scale in your data center with the type of loads that can, unto themselves, be resilient, be reliable, even if there is that single point of failure that is pushed closer to your devices. We understand that is a choice, that is a design element that will not be for everyone, but where appropriate it is today delivering reliable and massive cost savings for people who have selected this platform.

I’m Dave Slotten VP of Product Marketing at Tripp Lite. I thank you for your time and hope we can help you with your next data center project.

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