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Transformer Design

Distribution Transformer Design

I designed a 120 kVA, three-phase, 50 Hz, 11000/415 V, delta/star distribution transformer.

Conditions:

• Tapping ± 2.5%, ± 5% on high voltage side.

• Cooling ON (self-oil cooled)

• Temperature rise over oil less than 600C

• Load loss not more than 3KW

• Percentage impedance %Z= 4.50%

Design Parameters:

  1. Efficiency at 750C on full load,75% load, and 50% load at unity power factor

  2. Regulation on full load at 750C at unity power factor and 0.8 power factor lagging

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Autocad Design

Layout of L.V. winding (all dimensions in mm)

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Layout of L.V. Winding

Layout of H.V. winding

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Layout of each H.V. coils (all dimensions in mm)
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Layout of H.V. winding (in mm)

Layout of Three phase Distribution Transformer

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Layout of Three phase Distribution Transformer (all dimensions in mm)

⚙️Tank dimensions

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Tank dimensions(in mm)

🔗Details Report is here