Do delta connected lines have ground?

Question

for transformer application

Answer 1

They can be for secondaries.

There are two kinds:

Corner grounded Delta - Where one phase is grounded.

Used for safety in industrial app.s.

and

Center tap Delta - Where a center tap in one coil is grounded to provide both ground reference, and for some limited 120V. circuits from two phases.

Limited rural high load service use.

Answer 2

what the previous man said is true but naturally every thing has a ground so in that sense then yes

Answer 3

No.  That side of the transformer just outputs three phases.  the ground return is just carried over from the earth ground on the input side.