I have a Henry Radio SS750 solid-state amp that runs on 14v at about 100 amps
max. I'm using a pair of Astron 70-amp power supplies in parallel (they have a
sense input that permits this) to power the amp. These are the 230-volt
versions of the RS70A. I have been using this setup for a couple of years.
I recently installed a 25a 250v rated solid state relay in the 230-volt line to
make it easier to control the supplies from my operating position. Since then
I've randomly blown fuses in the supplies -- not when turning them on, but when
keying the rig. Note that the fuses are in the supplies, after the relay.
Does anyone have any idea why this would happen?