480 volt corner ground delta questions

[tbonse]

This seems like a stupid question, sdbob, but why not just ask the POCO to reconfigure the transformer configuration to a more commonly used one (or one that would more closely match the requirements of your equipment)?

I ask this because the transformers are connected to neither line nor load. :smile:

 

[George Stolz]

Tbonse, one aspect of the corner-grounded delta that cannot be overlooked is the economy of it's use of conductors. It may well be cheaper even after special parts (the goofy meterbase, straight-rated breakers, etc) are purchased.

I have to say, seeing someone encounter one of these for the first time definutely brings to mind the rule "Keep It Simple, Stupid."

It sure seems like it would be easier on all parties just to use a more conventional system and forget about it! It's fun to think about, though.

 

[sdbob]

Apparently this was the only voltage available. I don't know enough about utility voltages and transformer configurations to understand why. I'll ask around.