Inverter cooling fan

[S_Davis]

I am getting ready to install a Outback VFXR2812 inverter, it is going in an enclosure and needs ventilation. Those of you with an enclosed inverter what are you using for a cooling fan? The inverter can support up to a .7 amp draw for the fan.

[S_Davis]

Thanks for the input I am going to go with two Noctua NF-A14 iPPC-2000s to start and will monitor temps and add more if needed, I have a four fan control with individual temperature settings so I can stage them based on the temperature in the enclosure.

[theoldwizard1]

The best/quietest computer fan (12v) are made by Noctua.

[gatorcq]

I purchased 2, 4" muffin Fans. Run in series. 1 intake, 1 exhaust.

[Itinerant1]

As Pianotuna points out if your inverter uses the ac to run its fans let it cooldown before turning it off.

I run my Magnum for hours powering the ac unit but I make sure that the front compartment is open for air circulation under those conditions. Also the inverter is on 24/7/365.

[2oldman]

S Davis wrote:
I am getting ready to install a Outback VFXR2812 inverter, .

Excellent choice! The Outback units are built like tanks and should last forever. Note that it weighs 60lb, so there's probably enough heat sink in that mass you may not need to ventilate it. I doubt the mfr just forgot about cooling an inverter that expensive.

I have the 3648A, and I never hear its fan, nor do I know if it even has one. It's in the basement, not a small enclosed space however.

[pianotuna]

S Davis

What is the wattage of the inverter? What is the efficiency?

For example 1000 watts at 9% = 111 watts of heat to dissipate.

From that you could calculate the air flow needed.

I would use DC computer fans, one to exhaust and one to blow into the box.

I'd use a mechanical thermostat to control the on/off cycling.

My Magnum caught on fire--because it uses AC controls (or perhaps AC fans).