I had to add a soft-start relay to my Astron RS-70A power supply to keep
it from popping a 16a breaker when using it on 50 Hz. But otherwise it
works fine with the transformer wired for 240v.
73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
On 07-Jul-2022 01:01, Josh Fiden wrote:
Transformer core can saturate if line frequency is too low. Except
I’d be certain KPA-500 uses the same transformer for export to 50Hz
countries so your variations are fine.
Many years ago when I was young & dumb discovered this the hard way.
Customers would take products with 120v/60Hz line xfrs and run them
in Europe 240V/50Hz with a step-down transformer. They would
saturate, overheat & pop fuses.
73, Josh W6XU
Sent from my mobile device
On Jul 6, 2022, at 12:51 PM, Dick Bingham <[email protected]>
wrote:
Greetings everyone
I hesitate to use my KPA-500 here at this CN98pi QTH. LIne
frequency here varies daily between 58.xx-to-61.yy Hz
______________________________________________________________
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]
