I have a mains to 60v DV power supply that I’m using for a project. Needless to say it managed to give me a bit of a shock. This surprised me as it’s supposed to be floating.
With no load the power supply seems to show a -60v potential to earth ground from DC -ve.
With the power supply off. Measuring Resistance between the DC -ve terminal and the earth ground there seems to be some capacitance as resistance goes from 1m to 0 ohms.
Measuring for capacitance there seems to be about 400uf capacitor between earth and the -ve terminal.
Putting a 5k ohm resistor between DC -ve and ground shows about 11mA flowing...
Obviously measuring anything with my bench oscilloscope is out of the question as this power supply -vs has a current path to earth.
Is this a poorly designed power supply?