I monitor mine with the remote program which shows temp on screen. When the fans go to high speed the temp drops very quickly. The thermal design appears to have plenty of reserve capability. I think the temp cut off is 90C. I’ve never seen mine go above 73C.
Ken K6MR From: Bob McGraw K4TAX<mailto:[email protected]> Sent: Wednesday, January 27, 2016 16:48 To: [email protected]<mailto:[email protected]> Subject: Re: [Elecraft] KPA500 in RTTY Contesting The most destructive element to all solid state devices is......... HEAT! The KPA500 seems well protected and will drop off line if the temperature exceeds a preset level. My only concern regarding pushing an amp like this or any other solid state amp to near rated values, same for near maximum heat values, what happens if the protection circuit fails? Hopefully the software will recognize a protective circuit failure and shut the amp down. 73 Bob, K4TAX On 1/27/2016 4:14 PM, Irwin Darack wrote: > I am curious to others experience with the KPA500 in a RTTY Contest. What > is the power level that others have used, fan levels and long term affect > on the power transistors? > > I ask, as so far I have run the amp at no more than 300 watts with the fans > at there highest level. I do not want to harm the power transistors. > > Thanks, Irwin KD3TB > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
