Suppliers for Very High Current power supplies - Page 1
Forum section: electronics / testgear

author: saaaaam
author_rank: Newbie
timestamp: July 11, 2025, 05:59:59 pm
content: Hi!I'm a test engineer working on a new device where we need some very high current power supplies.I'm looking in the3000 Amprange, but could go higher in the future. Loads are low resistance, so overall voltage/power needs are probably not the limiting factor.It looks like most supplies in this range are built for battery pack and solar panel development work, and I'm not familiar with that field. I need basic DC and AC at multiple frequencies. An arbitrary waveform is nice to have; computer control over several interfaces is a given, I'm looking for rack-mount test equipment style solutions with precise current and voltage control.Does anyone have suggestions for companies that offer supplies in this range?Things I have found so far:Keysight RP7900TDK GENESYS+Matsusada PrecisionTektronix EA Elektro Automatik EA-BTSAny major players I am missing?p.s. when searching, I found that the concept of "very high current" is almost comically relative and subjective here. For some folks "very high" means 30 amps, for others 300. I hesitate to call this "extremely high" lest someone show up and tell me about their 30,000 Amp rig...

author: Martin72
author_rank: Super Contributor
timestamp: July 11, 2025, 08:44:59 pm
content: Hi,Magna Power (USA) comes to mind when it comes to DC applications. Individual devices can deliver up to 6000A (16V) and can also be interconnected to achieve several MW of power.Another supplier would be Pacific Power (also USA), whose devices can also be interconnected.We use the AFX series from Pacific Power, but only individually (15kVA).These supplies can handle DC and AC up to 2kHz and have DSP on board for any waveforms.However, they are very expensive.Nevertheless, it is worth taking a look at their website.There is also the manufacturer Zenone from Italy, from whom we have a 300kW supply. They also make DC supplies up to 20 kilo-amps.https://magna-power.com/https://pacificpower.com/https://www.zenoneelettronica.it/indexe.html

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: July 11, 2025, 09:59:44 pm
content: Kikusui have a 20kW unit in 3U, and you can connect up to 25 of them togetherhttps://global.kikusui.co.jp/products-index/dc/pxb/

author: H.O
author_rank: Frequent Contributor
timestamp: July 11, 2025, 10:40:49 pm
content: Another big player is Delta Electronika.Like Kikusui their SM15K system can be interconnected to deliver power in the MW region, like 27kA @70V.Sorensen is another brand that springs to mind when it comed to high power supplies.With this said, I'm not sure the ones I've got in mind are capable of arbitrary frequency output and such, at several kA...

author: TobyG
author_rank: Contributor
timestamp: July 11, 2025, 11:37:01 pm
content: Heiden Power comes to mindhttps://www.heidenpower.com/en/produkte/Anything with "HEA" in the name are rebadged Elektro Automatik units.

author: joeqsmith
author_rank: Super Contributor
timestamp: July 12, 2025, 12:12:47 am
content: Quote from: saaaaam on July 11, 2025, 05:59:59 pmAre you asking people to guess all the other requirements? As long as it's 3000A that's all you need? 0.0000001V, 100% ripple, 1000% overshoot, fixed...Here's a used 8V 3000A Rapid, 480 3P. Good enough?https://www.ebay.com/itm/290890963345

author: NiHaoMike
author_rank: Super Contributor
timestamp: July 12, 2025, 01:15:29 pm
content: If AC only is sufficient for now, get a big toroid or other transformer with a large opening inside the core and loop some heavy wire through it. Drive it from a variac or large audio amplifier.

author: saaaaam
author_rank: Newbie
timestamp: July 13, 2025, 12:11:00 am
content: Thanks y'all, these are great helpful answers. I'll follow up with these suppliers to identify specific solutions from each.And @joeqsmith, it seems that I did include the right information because I got the responses I needed. We are still in the design phase so I don't have those specs yet.Just looking for suppliers to contact now. I did include details about computer control and the type of equipment I am looking for, so no the Rapid device does not suit our needs. Thank you for providing an interesting comparison point though, that'll be useful in the business justification process.

author: Hawaka
author_rank: Regular Contributor
timestamp: July 14, 2025, 11:35:48 am
content: https://www.gustav-klein.com/en/might be of help. But it is a german company, maybe harder for you to source.In any case for that power level you are most certainly going to need some sort of custom design. Don't spend to much time looking for a off-the-shelf design, once you found a few companies contact them. They usually all do modification of standard product to fit customer needs.

author: SM3VLC
author_rank: Newbie
timestamp: July 14, 2025, 09:47:35 pm
content: Another supplier of high power supplies is ADL.https://www.adl-gmbh.com/

author: RogerG
author_rank: Regular Contributor
timestamp: July 15, 2025, 10:00:24 am
content: What about these:Benninghttps://www.benning.de/products-en/industry-power-supply-systems.htmlDeltahttps://deltapsu.com/enEatonhttps://www.eaton.com/us/en-us/products/backup-power-ups-surge-it-power-distribution/dc-power-solutions.html