3 phase delta

[JimmySki23]

Today I came across a three phase Delta system, and I have a question as to how the grounding in the actual panel box is to be configured.

I know that it is a grounded for wire three phase Delta system, because there is no such thing as a three wire grounded Delta system there for my question is as follows

after the disconnect switch, there are six panels are these six panels that are after the disconnect switch considered to be subpanels?

If they are considered to be sub panels, and the neutrals and grounds are to be separated from one another becoming isolated what is the proper way to configure the wiring inside of the panel box as I am upgrading the panel boxes to 200 amp

Do I still need to have the 2 ground rods placed minimum of 6 ft apart grounded to the disconnect switch?

this is a commercial setup and all wiring is ran in emt conduit.

 

[infinity]

after the disconnect switch, there are six panels are these six panels that are after the disconnect switch considered to be subpanels?

What type of 3Ø Delta is this, 3Ø, 4-wire or corner grounded? Is the disconnect switch the service disconnect?

 

[Hv&Lv]

I know that it is a grounded for wire three phase Delta system, because there is no such thing as a three wire grounded Delta system there for my question is as follows

Corner grounded delta bank is three wire, grounded delta.

 

[JimmySki23]

This is a 4 wire 3 phase delta high leg system. 3 hots and a neutral wire.

 

[ActionDave]

You need to find a local electrician with some commercial experience that can help you navigate this.