Wanptek KPS-Series Power Supplies

[adras]

I didn't see any topic in the search related to these power supplies, so I thought we can discuss this.

Recently I was doing some experiments with single wires and magnetic forces. My current Power Supply can only deliver 10 Amps though. So the magnetic field I got was kinda low for what I was expecting. Since I've always the guy who screams "MORE POWER" at any issues, I decided to get a Power Supply which is in the KiloWatt range. So, since the fuses I got in my household can handle 3680 Watts, I thought I should get something close to that. Of course if you look at the common felons like Keysight, Rigol or anything else it get's pretty expensive. Eventhough, Keysight mentioned in one of their pdfs that their Power Supplies are affordable (well, I can't afford those, like 6000 USD).

Anyway ... When things are getting too expensive the first thing to do is to look at India (well, not developed enough in electronics yet), then look at China and then look at everything else. Since India is already out, China is probably the best option.

Since Chinesium is a quantum material which exists in multiple states at once(Superior or Inferior quality) it's always important to check in which state a product is

Therefore I'd like to introduce the KPS-Series of Wanptek: https://wanptek.com/productinfo/1066.html

Now, to what I need from this Power Supply:

• No audio equipment or anything else which requires low noise
• Melting wires
• Lot's of sparks
• Capability to power a 5V Micro Controller
• Lots of current

I think it can handle all of those. But in general, I'd like to know a bit more about it. Since I'm not an electrical engineer, I've got a couple of questions:

• I'd like to know in ELI5 terms how accurate it is
• I'd like a general opinion (if it exists) on Wanptek supplies
• I'd like to know about safety considerations.
  
  • 30V, 100A seems to be a welder that can blind my eyes?
  • 60V, 50A seems to be close to what can be a lethal DC voltage?
  • 120, 25A should be a lethal DC voltage?
  • I think having a 3kW Power Supply connected to the same fuse as my 1kW Power Supply PC might be troublesome with the 3.6kW fuse I got, right?
  

So ... what do you guys think?

Can you help me with my questions? I'd really appreciate it

[thm_w]

The accuracy is stated on their page:

Regulated state CV
     Voltage stability：0.5%±20mV
Load stability：0.5%±20mV
Ripple voltage：≤0.5% Vp-p
Steady flow state CC
     Current stability：0.5%±20mA
Load stability：0.5%±20mA
Ripple current：≤0.5% Vp-p
Temperature Coefficient：≤100ppm/℃

Some prices here but only up to 1200W: https://www.aliexpress.com/item/1005001491498158.html

Specifically what voltage and currents do you need?
Maybe the problem is not "I don't have enough current" but more that you need more turns of wire or use another method of optimizing the electromagnet.

[adras]

I just wanted to play around with a straight wire, no coil. I just ordered the 30V 60A model. That should be sufficient for playing around a bit. Now all I need are wires and some plugs.

I guess 8 AWG silicone cables should be sufficient, right? Something like this: https://tinyurl.com/4ys7cjk4

Now I just need some plugs. I would like to be able to rip the connection appart, just in case something unexpected happens

[Gregg]

30V, 100A seems to be a welder that can blind my eyes?
It won’t blind you unless you get an arc started maybe by melting the wire you are playing with. Careful attention to the higher resistance parts of your (short) circuit will be prudent; a DC rated fuse may be a good idea. Keep in mind that once a DC arc is initiated, it ionizes the surrounding materials and is much easier to sustain.  The metal conductor that melts and then arcs can spew a lot of metal vapor that will make the air and adjacent surfaces conductive.  Wear safety glasses that block UV or better yet wear both safety glasses and a face shield.  Welding supply stores have lots of safety equipment at reasonable prices compared to scientific supply stores.

60V, 50A seems to be close to what can be a lethal DC voltage?
60V is sort of borderline, depending on how conductive your body is at the time.  I have worked extensively with huge telco battery systems that run at 54V and 5K to 15K amp working ratings but much more short term amperage available from huge battery banks.  With dry hands, I never got a shock, sometimes a tingle.  Gloves should work for you in most cases; don’t forget eye protection as there is still possibility of arcing.

120V, 25A should be a lethal DC voltage?
Yes it certainly can be lethal; DC tends to keep your muscles from working or letting go of the wire you are holding.  There are no zero crossings like with AC.  If you don’t know what you are doing, stay away.

[adras]

Cool, thanks for the help. As mentioned above order is done and I can't wait for the delivery