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A differential protection CT (& off course every CT) has a primary & secondary winding, right. Now my question is that for differential protection, a CT's primary is always (or most of the times) connected in star & its actually seondary winding of a CT that is connected in delta or star(depending on requirement)????
So, when we say that CTs on transformer's star connected winding are connected in delta, this means that CT's primary is star connected & it is actually its secondary winding that is connected in delta????
So, when we say that CTs on transformer's star connected winding are connected in delta, this means that CT's primary is star connected & it is actually its secondary winding that is connected in delta????