1. General construction of
transformer
by
Debjoy
Bhattacharya

2. WorkinG PrinciPle

3. tyPe of service
Distribution Power
transformer transformer

4. core & shell tyPe
transformer
Core type Shell type

5. Core type
transformer

6. Shell type
transformer

7. TRANSFORMER CORE
MATERIAL
• Hot rolled steel
flux density-1.45wb/m^2
• Cold rolled steel
flux density-1.8wb/m^2
Now a days all kinds of transformer is made
by C.R.G.O steel.

8. CORE CROSS –SECTION

9. lamination

10. Types of lamination
L type
I type
E type

11. L type

12. I type & E type

13. winding

14. WindinG machine

15. clamPinG

16. THANK YOU