Power supply to use with Hyperion 1420i

You can get two in series and have a 12V/24V power supply, you can then charge your batts to the max the 1420i will allow, 20amps. There's a section on the TJinguytech site that shows how to do it. This is mine, works awesome. Just a box made of hobby grade plywood so the PS don't touch each other.

24v_ps7.jpg
 
You won't get a full 550 watt charge rate with a 12v supply, even with 47a output. You need a supply with at least 24v. I use a meanwell 27v power supply.
 
It supplies 47A which is more than the Hyperion 1420i needs so you're fine. It would be bad if you were to use a weaker supply since the Hyperion wouldn't be able to put out the max current it's capable of...
 
http://www.endless-sphere.com/forums/viewtopic.php?f=14&t=36023

this is a link to my thread on using server powersupplies to power the hyperion you are talking about. check out the youtube clip at the end

actually here it is but do look through the thread, think its pretty helpful.

[youtube]NY9HLpwOrFY[/youtube]

regards Andy
 
I'm still leary about connecting two of those power supplies together on my own - seems SKETCH. And there aren't any guides I've been able to find that lay it out step by step. I don't want to get zapped.

Can someone chime in on whether I need two psu's at 24v, or just the one at 12v? Is my math correct from above?
 
you can operate the hyperion at 12v but you dont get to use it to its full charging potential. If you series the pc server powersupplies you must float the second power supply ground. I did this in mind by using pieces of rubber to disconnect the pcb trace from the case pillars and using cable ties instead of metal screws to hold the pcb inside the case. (it was a prototype) next time ill find some nylon screws but tbh it works great.

so go read the thread and tjintechs website is pretty damn good, plus i read auraslips site he has some nice work too.
 
crusoe said:
Can someone chime in on whether I need two psu's at 24v, or just the one at 12v? Is my math correct from above?
Click to expand...

All I can see in the manual is this: DC Input required for max watts output: 24V+

Don't know what limits are imposed when you use a 12V input. I use a meanwell 24V
 
Ya, i'm thinking of just going with the meanwell also. Any forum members sell them? Or know where to buy them from a source that isn't selling fakes - ebay is tricky at times!
 
The 1420i has max output of ~250w @ 12v input. You need 24v PSU to achieve 550W. Definitely check out whereswally's thread. All the info is there including the simple instructions. All that is required is some basic soldering skills.
 
I have 1420i with 18V 30A PSU
http://www.hobbyking.com/hobbyking/store/%5F%5F17754%5F%5FHobbyKing%5F540w%5F100%5F120v%5FPower%5FSupply%5F13%5F8v%5F18v%5F30amp%5F.html

My lipo is @ 37V but I can only charge at 9.5A with this setup.
If i split the pack in two - 18.5V each then The charger ramps up to 19.5Amps.

Why so? Is it because it can't handle 37V at max Charge rate?
 
Allex said:
My lipo is @ 37V but I can only charge at 9.5A with this setup.
If i split the pack in two - 18.5V each then The charger ramps up to 19.5Amps.

Why so? Is it because it can't handle 37V at max Charge rate?
Click to expand...

Well it certainly is not going to charge 37v at 19,5 A, because that is 721 watts !
...and the most your PSU can supply is 18X30A = 540 w, but there are losses when stepping up the voltage from 18v to 37v, hence why you only get 9.5A instead of the 14.5 A you thought possible
When charging at 18.5 V there are less losses in voltage change.
you may notice it runs warmer or the fan is on more, when charging at 37V,..because those losses are generating heat.
If you had a 24v ( 30A) PSU, you would get a higher charge current at 37v ( but unlikely to be the full 550W still)
 
I'm building the 2x server power supply route right now, using the same supplies. They are cheap and work well. For those concerned they run 2x them in parallel stock in servers (redundant) in case one fails. Putting them in series is fine, as long as either the input side ground is floated, and the supplies don't touch metal to metal, or (a better solution but more work) is floating the DC ground on the secondary supply and attaching the chassis together. This gives you a setup of 12v and 24v @ 47 amps.
 
crusoe said:
What is this floating? I don't understand it
Click to expand...

Isolating the chassis ground from the circuit board. This is required when wiring 2 supplies (both having a grounded chassis) in series. Otherwise the common ground of the second supply in the series chain will result in a short circuit across the first supply.
 
It looks like most of these guys are cutting the AC ground and not modifying the supplies for series operation. Thats really quite sloppy and can lead to issues.
It's not terribly hard to isolate the DC ground and keep the supplies safe for parallel and series operation.

I even happen to have one of these in the FS section. ;)
 
I second what Zomgtek says above, dont sever the AC ground less you want to experience main voltage shock. My prof of Electrical engineering at uni said the same floating AC grounds is BAD m'kay

Floating The DC ground is basically severing the DC connection to the case. My PSU's from my thread are connected through the pcb to the case via the case internal mount screws. So to sever the connecting in the 2nd supply ie 12-24v to "float it" i replaced the screws with zip ties (not metal) and insulated between the case metal and the pcb with rubbers (literally and eraser chopped into little pieces.) dont have pics to hand but its easy todo.

Crusoe are you in the US or UK, pls update your info so peeps on the relevant side of the pond can help you
 
You must log in or register to reply here.

Similar threads

RickyDean
Ecotric 48v 13s wont function
Replies
1
Views
368
floydr
F
General_Lee
Anybody have informations (doc) about the ZXD2400 4,3 power supply modified?
Replies
1
Views
226
Sobakeen
S
B
    • Like
Will i have too little current for weld ?
Replies
13
Views
340
bikermice
B
P
Replace big power supply with trickle-charged battery pack?
Replies
11
Views
612
wturber
wturber
MangDav
Battery not charging via charger but does via power supply?
Replies
2
Views
640
fechter
fechter
Back
Top