Products > Test Equipment
Recommendations for 60V 20+A DC power supply to test RC brushless motors?
Circlotron:
One thing's for sure - with one of those ducted fans for a load, aim it in the right direction and you won't have any trouble keeping your power supply cool!
LCA078:
--- Quote from: ci11 on October 29, 2022, 03:24:53 am ---
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.
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--- Quote from: KrudyZ on October 29, 2022, 04:25:13 am ---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.
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Thanks for the inputs. HP (Agilent) is obviously a familiar high quality name which is why, IMHO, they carry the price premium and have fewer selections available on ebay. From what I can see on ebay, the Sorensen is probably the way to go for an used industrial power supply.
I'll probably end up purchasing a Gophert power supply from Aliexpress and a used industrial one (Sorensen or HP or other high-end version) off ebay to ensure I always have a primary and alternate available. I really need to run dedicated 110/220VAC lines from the main breaker box to my "bench" in the garage. The first win in building a bench was convincing my wife the garage was destined to be a mini-electronics lab instead a place to park your car....so baby steps on this one.
--- Quote from: Circlotron on October 29, 2022, 11:56:17 am ---One thing's for sure - with one of those ducted fans for a load, aim it in the right direction and you won't have any trouble keeping your power supply cool!
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Yes- those things put out the airflow! We're currently using off-the-shelf battery powered leaf blowers which use 80-90mm EDF's to produce the needed airflow- and those things are mini-hurricanes. But we know our efficiencies are really low since they are optimized for high velocity (thrust). We believe going up in fan size but dropping way down on the power will be a huge increase in battery life as we're just trying to use these systems to ventilate (move large volumes of air) compared to produce lift (lower volumes of air at a high velocity). No issues with finding enough airflow to cool components in our design!
LCA078:
--- Quote from: LaurentR on October 29, 2022, 02:51:54 am ---
I have the CPS 6017, which I use for that exact purpose and it works very well for the price. At 1000W, they are pretty close to what you can pull from a regular US wall plug.
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Awesome- good feedback. Also, are you saying you use the 6017 to power BLDC's? If so, I need to pick your brain a bit on correctly setting up the ESC and input signals.
LCA078:
I also found these Sorensen bench top models. I really like the front outputs for a bench set but I'm definitely paying a premium for it (2x the price for a used Sorensen vs. the Gophert from Aliexpress).
Black Phoenix:
You could also look for the Tdk-Lambda PSUs. I tend to come around them often in the used market. Most are the single unit with output lungs on the back but others have banana style output on the front, with jumpers on the back for parallel and series connection with other similar units via RS232/485.
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