Determination of Transformer equivalent circuit from Open Circuit and Short Circuit Test.

STEP 1: Make the proper connection by clicking the node as instructed below. If the wire is wrongly connected, Click on the node number to detach the wire.

From A B D E E D H C L V S1 S2
To D E F G I P2 M L P1 P2 K J


STEP 2: Click on "Check Connection" button for checking the connections.

  • If connection is correct, an alert appears. Click ok.
    Now, go to step 4.
  • If connection is wrong, an alert appears. Click ok.
    Now, go to step 3.

  • STEP 3: Check the connection and either detach the incorrect wire connection or Click on "Reset" button and start from step 1.

    STEP 4: Switch on the MCB.

    STEP 5: Click on the Autotransformer knob.

    STEP 6: Click on "Add to Table" button to add the readings to the observation table.

    STEP 7: Click on "Short Circuit Test" button to perform the SC Test.

    STEP 8: Make the proper connection by clicking the node as instructed below. If the wire is wrongly connected, Click on the node number to detach the wire.

    From A B D E E D H C L V S1
    To D E F G I P2 M L P1 P2 S2

    STEP 9: Repeat steps 2 to 6.

    STEP 10: Click on "Submit" button to get an equivalent circuit diagram of transformer.

    STEP 11: Click on "Print" button to print the webpage.