In Scott connection, the voltage across the teaser leads the mains by

Scott Connection:

• The Scott Connection is the method of connecting two single-phase transformers to perform the 3-phase to 2-phase conversion and vice-versa.
• Scott connection of transformer is also known as T-T connection.
• One of the transformers is called the main transformer and the other is called the auxiliary or teaser transformer.
• The main transformer is center-tapped at D and is connected to line B and C of the 3-phase side. It has primary BC and secondary a1a2
• The teaser transformer is connected to line terminal A and the centre tapping D.  It has primary AD and secondary b1b2
• The voltage across the teaser leads the mains supply by \(90^{\circ}\)
•  The three phases of primary side of the main transformer have a tapping of 0.289Tp, 0.5Tp, and 0.5Tp where Tp is the no. of turns on the primary side.
• The teaser transformer has a primary voltage rating equal to 0.866 times the voltage rating of the main transformer.