I have a 380/3/50 to 220/1/50 transformer to supply the control circuit to an HVAC panel. Does the neutral conductor bond to earth ground like American 120V or go without like American 240V? These are all metal units with galvanized enclosures and false panels. With our 120V control we run a grounding conductor from the neutral terminal to the false panel and bond the panel to the enclosure, and the doors to the enclosure.

It seems like a simple and basic question, but I have been told that there is nothing simple or basic about Russian wiring.

Thank you.