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
My last report in the screwy 31 thread revealed higher than expected SG despite higher solar amperages needed to hold 15.3v, but today amps required to hold 15.3v were low again, and occurred early in the morning, so I put a max volt hold of 13.6v on it for the rest of the day.
I believe that I could add a fan blowing inward to the case, or perhaps reverse the 80mm Noctua, and get the fast and loud 40MM fan to shut off at a higher amp level. There is a little bit of that peculiar hot electronic smell when it has gotten as hot as it gets 15 minutes in, at 40 amps output, but not nearly as much as the over maxed out cheapowatt which was kind of sickly smelling when it was churning out nearly 200 more watts than its rating.
If you go back to the first page on this thread here is more data on the MW provided fan, but no definitive numbers. If you look at the one picture with the lid removed, there are two sets of white wires with temp sensors clamped to heatsinks. There is One on the central Heatsink and one on the biggest transistor on the other end/ corner of the case.
I basically leave the cabinet door open when charging, especially at the CC 40 amps stage. The 40MM fan turning off at 25 amps means I have already met my sound goals, but I will still employ the heatsinks adjacent to the transistors, and might add another fan blowing inward to the lid, as obviously there is not enough intake area for when both current fans are running.
I hope that the extra cooling, extends its ultimate lifespan. It really runs so cool when making under 10 amps that i'd not worry about the cabinet heating up with the cabinet door closed. I do have a 80MM fan exhausting this cabinet, as well as a louvered vent to allow compressor fridge heat to escape. This 80Mm fan was the 24v fan which came with my old Norcold Compressor fridge. it failed a while back and I put the noctua in its place, and then I discovered the wires just rotted off the circuit board on the 24v fan. Yesterday I fixed that 24vfan, and pulled out the 80mm Noctua for the MW and retasked the 24v fan to exhaust the electrical cabinet.
I had to remove the impeller to get to the circuit board. I lubed the sleeve bearing with thick silicone grease, and the fan barely turned. I then cleaned out the silicone lube and used a few drops of marvel mystery oil and the fan is nice and quiet and spinning faster than I remember
I believe that I could add a fan blowing inward to the case, or perhaps reverse the 80mm Noctua, and get the fast and loud 40MM fan to shut off at a higher amp level. There is a little bit of that peculiar hot electronic smell when it has gotten as hot as it gets 15 minutes in, at 40 amps output, but not nearly as much as the over maxed out cheapowatt which was kind of sickly smelling when it was churning out nearly 200 more watts than its rating.
If you go back to the first page on this thread here is more data on the MW provided fan, but no definitive numbers. If you look at the one picture with the lid removed, there are two sets of white wires with temp sensors clamped to heatsinks. There is One on the central Heatsink and one on the biggest transistor on the other end/ corner of the case.
I basically leave the cabinet door open when charging, especially at the CC 40 amps stage. The 40MM fan turning off at 25 amps means I have already met my sound goals, but I will still employ the heatsinks adjacent to the transistors, and might add another fan blowing inward to the lid, as obviously there is not enough intake area for when both current fans are running.
I hope that the extra cooling, extends its ultimate lifespan. It really runs so cool when making under 10 amps that i'd not worry about the cabinet heating up with the cabinet door closed. I do have a 80MM fan exhausting this cabinet, as well as a louvered vent to allow compressor fridge heat to escape. This 80Mm fan was the 24v fan which came with my old Norcold Compressor fridge. it failed a while back and I put the noctua in its place, and then I discovered the wires just rotted off the circuit board on the 24v fan. Yesterday I fixed that 24vfan, and pulled out the 80mm Noctua for the MW and retasked the 24v fan to exhaust the electrical cabinet.
I had to remove the impeller to get to the circuit board. I lubed the sleeve bearing with thick silicone grease, and the fan barely turned. I then cleaned out the silicone lube and used a few drops of marvel mystery oil and the fan is nice and quiet and spinning faster than I remember
