100% duty cycle 120vAC output 24vDCinput AIO.

[Mattb4]

Looking for recommendations on an AIO in the 3000w 120vAC 24vDC range that can handle being loaded (AC output) near rating for long periods of time. It is hard to ferret out such information from the various companies spec sheets because they tend to give you max limits and not how long they can run at max.

Thanks for any personal experience you may have with particular models.

 

[twrlp]

No personal experience, but Victron specifies 3kw continuous duty for their 24v multiplus-ii at 25C. That’s if you can keep it at 25C- with 94% efficiency, 3kw = ~180w exhaust heating; a large cool basement might be a sufficient heat sink. (Or if you’ve got the budget, parallel 2 for 3.4kw continuous at an insane 65C)

 

[Mattb4]

The 2200w at 40C (104F) rating is not bad for the Victron. Drops down quick if things get hotter than that. Pretty well guaranteed to be operating at a higher than 40C the majority of the time. So I would think 1800w to 2000w continous is what you could expect. Nice to see that they rate their unit for different temperatures and load types. Big issue for me is Victron does not market an AIO for the US market just the Multiplus. But it is definitely a possibility

ETA: Cooling a power supply so that it does not damage itself does impact the ability to operate continuous at high loads. With engines you add a radiator, fan and pumped coolant. Electrical items uses large surface areas and fans to dissipate heat.