| Products > Test Equipment |
| Recommendations for 60V 20+A DC power supply to test RC brushless motors? |
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| LCA078:
--- Quote from: ci11 on October 29, 2022, 01:43:38 am ---Since you're in the US, you can get a Sorensen DCS 60V 18A 1U rackmount supply usually for around $400 or less on eBay. These are industrial-grade supplies made to work in factories, not an Amazon offering made to meet a price. Sorensen has other models with more features at higher prices and they all work well and deliver what that datasheet states. Reach out if you have questions, I own a few so can probably answer most questions. --- End quote --- Thanks. I don't know much about Sorensen but there are a number for sale on ebay. I'm guessing they are well built and will last a long time with easy use? In other words, buying a used one on ebay is probably not too risky? |
| ci11:
--- Quote from: LCA078 on October 29, 2022, 02:58:50 am --- --- Quote from: ci11 on October 29, 2022, 01:43:38 am ---Since you're in the US, you can get a Sorensen DCS 60V 18A 1U rackmount supply usually for around $400 or less on eBay. These are industrial-grade supplies made to work in factories, not an Amazon offering made to meet a price. Sorensen has other models with more features at higher prices and they all work well and deliver what that datasheet states. Reach out if you have questions, I own a few so can probably answer most questions. --- End quote --- Thanks. I don't know much about Sorensen but there are a number for sale on ebay. I'm guessing they are well built and will last a long time with easy use? In other words, buying a used one on ebay is probably not too risky? --- End quote --- Sorensen is currently owned by Ametek in San Diego, and along with a number of other brands like California Instruments and Elgar, make industrial quality supplies that are for continuous duty. They are usually priced at $2K and above. So yes, they are robust designs with durable, high quality components even in their DCS "no-frills" line. Normal rules apply when buying used of course, such as getting assurance/evidence of performance as well as full disclosure of defects. I have had up to 4 and have not ever regretted buying any one of them. |
| KrudyZ:
Other options are older HP models from ebay like 6012B, 6032A (both 1000W running from 120V AC) or the 6674A which is 2kW but needs 240 V input for obvious reasons. All can be had in the $600 - 800 range. |
| james_s:
--- Quote from: tautech on October 29, 2022, 02:13:18 am ---Only crap PSU's have a grounded output, those that are constructed to provide a decent featureset, their outputs can be elevated considerably above mains ground, limited by PCB clearances and component limitations. --- End quote --- That's not true at all. I've never seen a server PSU that had floating outputs from the factory and these are certainly not crap, they're top quality industrial electronics that are designed for 24/7 service. If you're talking about lab style bench PSUs then yes those will generally have floating outputs but that isn't what I'm talking about. The server PSU or telecom "rectifier" (really just a bigger version of the server PSU) are a <$100 solution. A bench PSU capable of what the OP is asking for would cost hundreds even used with shipping on top of that. Both will work, it just depends on how much money you have vs how much you're willing to tinker around with surplus stuff. |
| nctnico:
--- Quote from: james_s on October 29, 2022, 04:33:35 am --- --- Quote from: tautech on October 29, 2022, 02:13:18 am ---Only crap PSU's have a grounded output, those that are constructed to provide a decent featureset, their outputs can be elevated considerably above mains ground, limited by PCB clearances and component limitations. --- End quote --- That's not true at all. I've never seen a server PSU that had floating outputs from the factory and these are certainly not crap, they're top quality industrial electronics that are designed for 24/7 service. If you're talking about lab style bench PSUs then yes those will generally have floating outputs but that isn't what I'm talking about. The server PSU or telecom "rectifier" (really just a bigger version of the server PSU) are a <$100 solution. A bench PSU capable of what the OP is asking for would cost hundreds even used with shipping on top of that. Both will work, it just depends on how much money you have vs how much you're willing to tinker around with surplus stuff. --- End quote --- Why bother with tinkering while you can get PSUs with adjustable output voltage AND current limit for a reasonable price? For testing purposes where you need different voltages / current limits a server or telecom PSU just isn't the right solution. These will only be worthwhile for a long term (several years) fixed test setup. |
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