SMPs Grounding

[jacques antoine]

Hi All,

I will use a SMPS300R 36-0-36V to power an amp.
It has two grounds separated by a ground loop breaker (see attached schematics).
Which one has to be connected to the mains earth and which one to the star ground on the metallic chassis?
Thanks,

Jacques

 

[Wieslaw Lipowski]

The mains cable and the metal enclosure should be connected to MAINS 3, I think.

 

[Kay Pirinha]

Yes, and completely isolate all amplifier components from the chassis, so that the 10R/100nF combination remains the only connection between ground and chassis.
Best regards!

 

[jacques antoine]

Done! Thanks Wieslaw and Kay.
Cheers,

Jacques