Thanks for the quick reply guys.
When we put the new subtractive transformer in where there was once an additive transformer, there was a 30 degree phase shift between the phases on the secondary of the transformer and the rest of the system. Obviously this is an for our customer as they want...
OK guys, I'm trying to put a subtractive polarity transformer into a substation that previously had an additive transformer. The new and old transformers were both delta-wye grounded.
Does any one have a link to information on how I will have to change the phases coming into and out of the...