Standard method to connect AC ground to DC ground in ARM-based LED driver measurement

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Clarifying how to bond AC and DC grounds safely
#1 21672377 19 Sep 2014 08:41

amin rajaie amin rajaie

Anonymous

Clarifying how to bond AC and DC grounds safely
Post #1 21672377 19 Sep 2014 08:41

Hi friends,
I am working on a project , i measure some of electrical characteristics of a led driver,
i am using ARM to measure that uses DC voltage but i am measuring voltage of a driver that is using AC voltage .

i want to know how should i connect the AC and DC grounds to each other that is standard ?
should i connect the grounds directly or i should use a particular circuit between them ?

thanks,
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Isolation transformer needed for safe AC-DC grounding
#2 21672378 23 Sep 2014 20:30

Neil Mula Neil Mula

Anonymous

Isolation transformer needed for safe AC-DC grounding
Post #2 21672378 23 Sep 2014 20:30

Hi Amin,

You need an isolation transformer for that case in order to ensure safety of your equipment.

AC ground is a return path of the system that should be connected to the main circuit.

DC ground is a reference path which is usually connected to earth ground assuming that it is in a zero potential.

You can also check the NEC Standard AC-DC Grounding.

or try this link -> http://solarbridgetech.com/wp-content/uploads...-SolarBridge-Enabled-AC-Module-Installers.pdf

Good Luck.

Best,
Neil
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