Mean Well RSP-500-15 Switching Power Supply
IT just arrived. Initial impressions: Much heavier than the cheapowatt 1/2" wider, 1/2 inch longer and almost 1/2 inch less High than cheapowatt. The casing is about 50 to 75% thicker aluminum t...
Forum Discussion
UPdate:
Both Noctua fans blowing inward is not as effective as the previous setup of one 60mm blowing in and one 80MM sucking out.
Well at least in terms of when the Meanwells loud 40Mm fan kicks on automatically.
The actual heat I can feel on the heatsinks and that exhausted by the 40Mm fan does not feel hot at all. If not for the automatic fan kicking on sooner at max output, and staying on longer when amps start tapering from 40, I would have judged the fan orientation successful.
With the previous orientation, the air moved when the the loud 40mm fan first kicked on, felt much hotter to me. Now when it kicks on it feels cool, likely because the 80Mm fan blowing inward tight next to it, so it will be reversed again, perhaps the 60Mm will be reversed too for experimentation.
I've got a new Bourns 1K ohm 10 turn Potentiometer with a turns counter to replace the suspect quality one I have been using, and will have to actually mount it properly for the turns counter to work properly, rather than letting some foam rubber in between the fans hold the potentiometer loosely.
I have a bunch of extra K type thermocouples for a DMM or other device, I can and likely will thermal epoxy one to a component inside the Meanwell. Just not sure which component would be best. There are two finned heatsinks inside, one of them appears to have a sensor on it to switch on the 40Mm loud fan, so perhaps this would be the best location but input welcome on this.
Anyway, Still loving this 40 amp 115vAC adjustable voltage charging source, and my AGM battery is cycling very deeply and often and seemingly retaining its capacity very well because of it, and my other charging sources which are also now adjustable in terms of voltage.
The dashboard mounted potentiometer next to my voltmeters, adjusting the voltage the alternator is allowed to maintain, is especially satisfying.
Battery temperature data reveals average battery temperatures much warmer than expected in my usage. Using ambient temps as a general guide for refining absorption voltage was not a good method, but this battery does not seem to have been compromised from too much voltage when its temperature is 10 or 15 degrees above ambient and I remained blissfully unaware of the warmer than expected battery.
Both Noctua fans blowing inward is not as effective as the previous setup of one 60mm blowing in and one 80MM sucking out.
Well at least in terms of when the Meanwells loud 40Mm fan kicks on automatically.
The actual heat I can feel on the heatsinks and that exhausted by the 40Mm fan does not feel hot at all. If not for the automatic fan kicking on sooner at max output, and staying on longer when amps start tapering from 40, I would have judged the fan orientation successful.
With the previous orientation, the air moved when the the loud 40mm fan first kicked on, felt much hotter to me. Now when it kicks on it feels cool, likely because the 80Mm fan blowing inward tight next to it, so it will be reversed again, perhaps the 60Mm will be reversed too for experimentation.
I've got a new Bourns 1K ohm 10 turn Potentiometer with a turns counter to replace the suspect quality one I have been using, and will have to actually mount it properly for the turns counter to work properly, rather than letting some foam rubber in between the fans hold the potentiometer loosely.
I have a bunch of extra K type thermocouples for a DMM or other device, I can and likely will thermal epoxy one to a component inside the Meanwell. Just not sure which component would be best. There are two finned heatsinks inside, one of them appears to have a sensor on it to switch on the 40Mm loud fan, so perhaps this would be the best location but input welcome on this.
Anyway, Still loving this 40 amp 115vAC adjustable voltage charging source, and my AGM battery is cycling very deeply and often and seemingly retaining its capacity very well because of it, and my other charging sources which are also now adjustable in terms of voltage.
The dashboard mounted potentiometer next to my voltmeters, adjusting the voltage the alternator is allowed to maintain, is especially satisfying.
Battery temperature data reveals average battery temperatures much warmer than expected in my usage. Using ambient temps as a general guide for refining absorption voltage was not a good method, but this battery does not seem to have been compromised from too much voltage when its temperature is 10 or 15 degrees above ambient and I remained blissfully unaware of the warmer than expected battery.
