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Recommendations for 60V 20+A DC power supply to test RC brushless motors?

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nctnico:
It looks like the Wanptek is 220/230VAC only from the Aliexpress link. Perhaps there is a 110V version as well though.

LCA078:
Dang- I missed the Wanptek is only 220/230VAC.  Looks like the Gophert is way to go. 

ci11:
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.

tautech:

--- Quote from: james_s on October 28, 2022, 11:46:40 pm ---
--- Quote from: tautech on October 28, 2022, 10:42:30 pm ---Probably but you first need check the manufacturers ratings of how far their outputs can be elevated above mains ground which applies when using multiple units in series.

--- End quote ---

The manufacture will tell you 0V, because from the factory the output ground is tied to earth.
--- End quote ---
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.


--- Quote ---In many cases they are easily modified to change this though. When playing around with cheap surplus stuff the easiest way to find out is to just try it, if it fails, scrap it and start over with something else.
--- End quote ---
Or in the first instance use an instrument made for the job, or relevant to our discussion a multichannel PSU designed to have channels placed in series (or Parallel) and allow for several units configured this way placed in series, all with none of their outputs tied to mains ground !

Some time ago I contacted Tech support for clarification of the SPD3303X-E datasheet Insulation specification on P4:
https://siglentna.com/wp-content/uploads/2020/10/SPD3303X_DataSheet.pdf

Insulation: Case to Terminal ≥20MΩ (DC 500V), Case to AC line ≥30MΩ (DC 500V)

I was informed multiple units could be used in Series not exceeding the insulation rating.
Tech support also sent me pictures of two 30V 3A units configured to provide 120V !

LaurentR:

--- Quote from: nctnico on October 29, 2022, 12:47:41 am ---
--- Quote from: thm_w on October 29, 2022, 12:41:36 am ---
--- Quote from: nctnico on October 28, 2022, 11:23:14 pm ---I'd look for a brand called 'Gophert'. They make a whole range of switching power supplies that are low cost, are of reasonable quality and should cover this application. Likely the (ab)use of old telecom / server power supplies is even more expensive.

--- End quote ---

Two of these: https://www.aliexpress.us/item/3256803507137876.html $450.
Don't know where the spec for o/p to ground max voltage is.

--- End quote ---
60V DC shouldn't be a problem. At least these PSUs are designed with floating outputs, current limiting and adjustable output voltage.

This one looks closer to what the OP is looking for in a single box: https://aliexpress.com/item/4000352693776.html

--- End quote ---

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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