1 Answers
Option 4 : Magnetic circuit is divided in two or more parts.
The differences between core type and shell-type transformers are given below.
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Core type |
Shell type |
| [ alt="F2 Savita Engineering 25-7-22 D13" src="//storage.googleapis.com/tb-img/production/22/07/F2_Savita_Engineering_25-7-22_D13.png" style="width: 204px; height: 170px;"> | [ alt="F2 Savita Engineering 25-7-22 D14" src="//storage.googleapis.com/tb-img/production/22/07/F2_Savita_Engineering_25-7-22_D14.png" style="width: 135px; height: 164px;"> |
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It has one yoke and two limbs |
It has two yokes and three limbs |
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Both the limbs are provided with windings and the core is being surrounded by windings |
Only the middle limb is provided with winding and windings are being surrounded by the core |
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Both the limbs have the same cross-sectional area |
Outer limbs and middle limb have a different cross-sectional area |
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Leakage flux is more, and power transfer capability is less |
Leakage flux is less, and power transfer capability is more |
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More amount of copper is required for windings |
Less amount of copper is required for windings |
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Less amount of insulating material is required |
More amount of insulating material is required |
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High voltage and small kVA rating transformers are suitable |
Low voltage and large kVA rating transformers are suitable |
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Suitable for high voltage power transmission |
Suitable for low voltage power transmission |
| The mean length of coil is shorter. | The mean length of coil is longer. |