Fig. 9From: Three-phase distribution transformer connections modeling based on matrix operation method by phase-coordinatesYN,d11 Connection of the transformer; YN,d11 Connection of the transformer in the coins is showed like this. In primary side, Coin X, Y, Z are connected; and (Coin a & z), (Coin b & x) and (Coin c & y) are connected together in secondary sideBack to article page