Connection of the negative terminal of the power supply with grounding

Thread Starter

Glebiys

Joined Mar 11, 2019
14
Hi,

I have a MeanWell EDR-75-12 power supply (AC / DC -> 230/12), which has two terminals at the DC output: + and - I need to connect the terminal of this power supply with the PE wire from the electrical box. The question is, is this right? There are insulating capacitors in the power supply circuit, between + and - and grounding, which confuses me a little.

 

Ramussons

Joined May 3, 2013
797
Yes, it is.
Output of this power supply is floating. You can use it as a + V supply grounding the - V terminal and vice versa.
 

Thread Starter

Glebiys

Joined Mar 11, 2019
14
If I connect the minus from the power source to the PE wire, then the shunt will be received parallel to the capacitor. It is right?
 

Sensacell

Joined Jun 19, 2012
2,449
Yes- you will be shunting one of the capacitors.

Those capacitors are there to shunt currents coupled by inter-winding capacitance in the main transformer to ground.
Keeps the common mode noise voltages under control.

Shunting it will cause no issues
 
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