i have a isolated 24DC power supply with earth fault indication.(ie,is the +ve or -ve line touch the earth)
for that i used 2 relays and connected the earth to coil and other pin to +ve and -ve lines
Quote:
-12V .. RELAY1 ...... RELAY2 .. +12V
-VE__/\/\/\/\/\____/\/\/\/\/\__ +VE...