| Core Type Transformer | Shell type transformer |
|---|---|
| The core has only one magnetic circuit. | It has two magnetic circuits. |
| Core has two limbs. | Core has three limbs. |
| It has less mechanical protection to coil. | It has better mechanical protection to coil. |
| It has better cooling since more surface is exposed to atmosphere. | Cooling is not very effective. |
| Natural cooling is provided. | Natural cooling cannot provide |
| This transformer is easy to repair. | This transformer is not easy to repair. |
| The winding is surrounded considerable part of core. | Core is surrounded considerable part of winding of transformer. |