Classic 150 min/max operating temp ranges?

[Aftrburnr]

Hello all,

New user of a Classic 150. Have had it installed for about a month now. More questions later...

What are the min/max operating temp ranges for this unit for the FET and PCB?

Thanks!

[Vic]

Hi Aftr..,  Welcome to the Fourm.

The Operating Temperature range for the Classic is stated  as,  "Minimum of -40C to 50C - Controller will auto derate as temperature rises above 25C"

The PCB and FET temperature ranges are relative to ambient temperature,  output current,  input voltage.   There are certainly maximum target temperatures,  but have not seen them published.

It is nice to try to keep the the FET and PCB temps below about 60 C.   The Classics here often operate around about 50 C for those two temps  ...   all depends.

It is a good idea to not run any Power Electronics at or near Max ratings for extended periods of time.

The Classic is a great CC,  and it appears to do a very good job at protecting itself from very high operating temperatures.

My opinions,   Vic

[Aftrburnr]

Hi Vic! Thanks for your reply! Have read many of your posts! Yah, I guess it's all relative to conditions but gives me some sort of idea of what to go by. I'd say it's running a bit on the hot side tho being here in AZ and I might want to mount the Classic on some sort of extra heatsink.

Right now, it's been cloudy on and off today (monsoon season) and one of our cooler days, it's 100 degrees out. From the status panel
Temperature: FET: 54.2°C  PCB: 54.5°C so not bad but has been higher when it's like 115 degrees out and she's making power I do agree tho that running any electronics max/hot can either blow it up or shorten it's lifespan and was why I was asking and concerned...

[Powerplay]

I think the internal fans are keyed off the FET temp.  But this is just observation and I've seen the PCB temp raise above the FET temp and the fans don't start until until the FETs are between 47 - 48 ish.  PCB can be 53 & no fans as long as the FET is cooler.  That said I've never seen my PCBs much above 53 & my FETs above 50 on any of my regulators.  There's a couple of layers of shade above my set up and a lot of air circulation also I'm really going easy on the battery bank in the summer.  I want it floating before things start getting hot outside around noon.  I've got about 2 cubic feet of space around the Classics in their cabinet and can throw the doors open on a really hot day.