To perform the Scott connection of transformer from three phases to two phase connection.

Aim

To perform the Scott connection of transformer from three phases to two phase connection.

Apparatus Required:

Transformer Specifications:

Mains Transformer:

Transformer Rating :( in KVA) __3kVA__________

Winding Details:

LV (in Volts): ___150V______________________

LV side current:_______20A________________

HV (in Volts): ________230V________________

HV side Current:______13A________________

Type(Shell/Core):_____________________

Tapping’s: ___________0% , 50% , 100%_________________

Teaser Transformer

Transformer Rating :(in KVA) ______3kVA_____

Winding Details:

LV (in Volts): ___150V______________________

LV side current:_______20A________________

HV (in Volts): ________230V________________

HV side Current:______13A________________

Type(Shell/Core):_____________________

Tapping’s: ___________0%,86.6%_________________

3- ɸ Auto transformer Specifications:

Input voltage: ___415_________________(Volt)

Output Voltage : ____(0-470)_______________(Volt)

Frequency:________50________________(Hz)

Current rating (in Amp):______8A per line__________

Circuit Diagram:

Procedure:

1. Connections are made as per the circuit diagram
2. Ensure that output voltage of the variac is set in zero position before starting the experiment.
3. Switch ON the supply
4. The output voltage of the variac is gradually increased in steps upto rated voltage of single phase MAIN transformer and readings are correspondingly taken in steps.
5. Enter the readings in tabular column
6. After observations, the variac is brought to zero position and switch OFF the supply.

Calculations:

V_2TM=√V²_2T+V²_2T

Tabular column:

Result:Scott connection is performed on transformers and supply 3-Φ to 2- Φ conversion is observed.