MEXICOWANDERER wrote:
If a Megawatt stays at full output for an hour this is no stinky bueno.
I use my Meanwell rsp-500-15 as a bulk charger, absorption, float charger.
At its maximum output(40 amps), it does get hot.
I have enhanced airflow through and over unit, and added more heatsinking and can usually keep it below 120F at maximum output.
I believe Mex's quoted words above are not only to indicate 3 stage converter X is likely to drop to float, or to a lower absorption voltage( thus slowing charging) while the batteries could accept 36+ amps, but that the Megawatt at 36 amp output for and hour might overheat the unit.
Those considering using these as a bulk charger, not just as an Absorption charger to take over when the converter decided to drop voltage while generator is still running, need to consider increasing heat removal from Megawatt/Meanwell to promote longevity, especially in hot ambient temperatures.
I have a thermocouple on the inside of my Meanwell on a heatsink. Ambient temperatures have a Huge affect on internal temps. At 70F it rarely exceeds 106f at 40 amps output. At 90f it will easily climb to mid 120f at 40 amps output, and that is with extra fans and more heatsinking, and airflow over the whole unit.
Once amps drop to less than 32 the heat the Meanwell makes is back down below 100F. Those 8 extra amps really cause a lot more heat.
