Phase sequence must be same

Type must be same

Polarity must be same

Capacity must be same

Transform 3 phase to 2 phase

To stabilize the output voltage

To get rated power output

Transform 3 phase to 6 phase

Natural air method

Oil blast method

Air blast method

Forced circulation of oil

To improve the efficiency

To protect the winding from damage

To regulate the voltage

To increase the life of transformer oil

Forced oil and water cooled

Air blast method

Oil and water cooled method

Oil blast method