30v PS for PowerLab6

[jflowers84]

Anyone using a commercially available or home made 30v 40A PS for their FMA direct PowerLab 6?


Can 3 server power supplies be wired in series and then step the voltage down to 30v?

[Tim Marks]

Originally Posted by jflowers84

Anyone using a commercially available or home made 30v 40A PS for their FMA direct PowerLab 6?


Can 3 server power supplies be wired in series and then step the voltage down to 30v?

Hi:

Not sure what you intended by "commercially available", but the IOTA DLS-27-40 is nearly a perfect match for acheiving max power on the PowerLab 6 off-the-shelf. There is a little voltage step-up connector you can install. We've also opened one up and trimmed the output voltage up to 30V. As far a PSU's go, these are pretty good. May be above your price range, but you didn't say anything about that. It does require a 20A breaker though and comes with one of those funky AC plugs with one of the contacts turned 90 degrees so you can't plug it into a standard 15A breaker.

Also, I hope you are aware that you do not need to supply 30A unless you need exactly 40A output into a 6s battery. We've made these online calculators available. All you have to do is plug in the voltage and amperage of the PSU you want to use, the battery pack you'll be charging, and it spits out the max current you can deliver using your inputs. Try it. It's neat!

http://www.revolectrix.com/Calculators_main.htm

The above is the main calculators page. Pick the PL6 and go from there. For the batteries you'll be charging (you didn't say), it might not benefit you to go all the way to 30V. A lot of people don't get this. That's why we supplied the calculators.

Tim Marks

[jflowers84]

Originally Posted by Tim Marks

Hi:

Not sure what you intended by "commercially available", but the IOTA DLS-27-40 is nearly a perfect match for acheiving max power on the PowerLab 6 off-the-shelf. There is a little voltage step-up connector you can install. We've also opened one up and trimmed the output voltage up to 30V. As far a PSU's go, these are pretty good. May be above your price range, but you didn't say anything about that. It does require a 20A breaker though and comes with one of those funky AC plugs with one of the contacts turned 90 degrees so you can't plug it into a standard 15A breaker.

Also, I hope you are aware that you do not need to supply 30A unless you need exactly 40A output into a 6s battery. We've made these online calculators available. All you have to do is plug in the voltage and amperage of the PSU you want to use, the battery pack you'll be charging, and it spits out the max current you can deliver using your inputs. Try it. It's neat!

http://www.revolectrix.com/Calculators_main.htm

The above is the main calculators page. Pick the PL6 and go from there. For the batteries you'll be charging (you didn't say), it might not benefit you to go all the way to 30V. A lot of people don't get this. That's why we supplied the calculators.

Tim Marks

Tim,

Thanks for the information, I was aware of the Power Calculators and used them in my decision to purchase the PowerLab 6. Right now I am using a 24v 35A system that will allow the PowerLab 6 to push out 30A.

I am using the Nano-Tech 6s 5000 mAh batteries that can charge at 8C, which if my math is correct is 40A. I will most likely never charge a single battery at that rate, but I would not mind charging 6 of then at just over 1C.

I have looked at the IOTA DLS-27-40, but it really seems like the only option. I don't mind the requirements. I am rehabing a house now and am installing a couple of 20A circuits for feed my need for power.

I was just wondering if there where any other options so when I decide to go up to 30v I know my options.

[Tim Marks]

Originally Posted by jflowers84

Tim,

Thanks for the information, I was aware of the Power Calculators and used them in my decision to purchase the PowerLab 6. Right now I am using a 24v 35A system that will allow the PowerLab 6 to push out 30A.

I am using the Nano-Tech 6s 5000 mAh batteries that can charge at 8C, which if my math is correct is 40A. I will most likely never charge a single battery at that rate, but I would not mind charging 6 of then at just over 1C.

I have looked at the IOTA DLS-27-40, but it really seems like the only option. I don't mind the requirements. I am rehabing a house now and am installing a couple of 20A circuits for feed my need for power.

I was just wondering if there where any other options so when I decide to go up to 30v I know my options.

Hi:

You could look at the Meanwells too. Then I'm sure a lot of people will chime in and tell you all about their server power supply solutions, or feathermerchant, etc.

Tim Marks

[paraglider]

How about a Mastech HY3050E:

http://www.mastechpowersupply.com/dc...t/prod_22.html

[paraglider]

Read this page:

http://sites.google.com/site/tjinguy...or-big-charger

[jflowers84]

Originally Posted by Tim Marks

Hi:

You could look at the Meanwells too. Then I'm sure a lot of people will chime in and tell you all about their server power supply solutions, or feathermerchant, etc.

Tim Marks

Thanks Tim.

I currently am using 2 server power supplies, however this does not scale well. If I add a third one I would hit +36v which is over the voltage the powerlab6 can support.

[Gregor99]

The PL6 can do pretty well on 24v as long the supply can delivery 40 amps continous. 860 watts from start to finish. That would give you just over 1c for size 6s 5000 packs. See this post for more details http://www.rcgroups.com/forums/showp...&postcount=251


Also there was recent post in the DSP-600PB thread about lower its output to 10v. Three of those in series might be an interesting test. But given the low voltage cuttoff on these supplies it may not be possible to get the resting voltage below the 32v max on the PL6. If its close, one could use a stud diode to drop the output voltage another 0.7v.

See post 32
http://www.rcgroups.com/forums/showt...1581061&page=3