Delta and Wye Primary Systems

[@markhemmings397]

Great video, something easier to understand about older educational videos!! Cheers

[@linehandibew6205]

You can use two bushing delta pots on a wye system. It all depends on the transformers required system voltage. Our system is 7620/13.2Y and we have transformers that require 13.2 so they get 2 primary connections. And we have single phase 7629 pots that are conventional 2 bushing pots . It all depends on the system voltage and the required voltage of that transformer. I’ve worked on systems that were grounded wye on the main line and all the fused laterals were 2 phase delta with no neutral. Key thing is pay attention to system voltage and required voltages of the equipment being installed.

[@tedlahm5740]

Can the DISTRIBUTION system have a three phase three wire DELTA system WITH NO Neutral (back to the substation) and use a single BUSHING transformer with a CASE GROUNG ? This possibly not covered in the video? thank you

[@ncooty]

Interesting, but not the least bit useful, because it doesn't really explain the principles or rationale. It's more about norms (with several exceptions), as if high-voltage electrical systems are like ornithology.