66KV 69KV 110KV 220KV THREE WINDING POWER TRANSFORMER

TRANSFORMER FEATURES

• Stronger short circuit withstand ability

• High insulation level

• Longer life cycle

• Low loss Low noise

• Reasonable accessories selection

• Excellent control for cooling

• Oil leak proof design

TRANSFORMER DESIGN

• Advanced Design

• Tated of the art standard three dimension design software to produce correct and complete engineering documentation.

• Electric Stress field calculation

• Desiqned transformer base on the worst short circuit conditions

• Welded tanks to minimize opportunities for leaks.

• High quality rubber gaskets in grooves.

ELECTRONMAGNETISM CALCULATION

To calculate the insulation strength based on comprehensive consideration of the impulse voltage gradient and the action time.

To minimize the mechanical stress by accurate of the coil magnetic field using analytic mirror method and calculating the ampere turn balance between the coils according each disc winding.

Calculate the wave and field strength of the electric field to ensure enough strength of the main insulation and vertical insulation under voltage acting.

Calculate the temperature rise of the core and the coil by computer program.

The accuracy of the core calculation is to each step and the accuracy of the winding calculation is to each disc winding.

TECHNICAL DATASHEET FOR THREE WINDING POWER TRANSFORMER

OUTLINE DRAWING FOR THREE WINDING POWER TRANSFORMER

1-Conservator

2-M.V. Bushing

3-H.V. Bushing

4-H.V. Neutral Bushing

5-Transformer Body

6-Radiator

7-On-Load Tap Changer

8-M.V. Tap Changer

9-L.V. Bushing