Shailesh Khaparkar Asst Prof.Gyan Ganga College of Technology, Jabalpur

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

• BobbinBobbin• Winding MachineWinding Machine• Copper wireCopper wire• Stamping( E & I Shape) Stamping( E & I Shape) • Insulation PaperInsulation Paper• Transformer ClampTransformer Clamp

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

A bobbin is a spindle or cylinder, with or without flanges, on which wire is wound. The primary and secondary is wound on the bobbin.

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

This machine is used to wind the number of turns on the bobbin.

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

Transformer core is made from E & I stamping. The material used for making E & I stamping is CRGO silicon steel for reducing eddy & hysteresis loss. With the help of E & I stamping the shell type core is constructed, the function of core is to set up & provide a path for flux.

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

Step I :- Fix the bobbin on winding machine as shown in image below.

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

Step II :- First select the copper wire and wind the primary number of turns as per design requirement on bobbin. The number of turns wound is shown by the counter of the machine.

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

Step III :- After completion the number of turns of primary winding, insulation paper is wrapped on the primary winding . This insulation paper isolates the primary & secondary windings.

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

Step IV:- After completion of wrapping the insulation paper, start winding the number of turns of secondary winding as per design requirement .

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

Step V:- After completion of winding the number of turns of secondary winding, take out bobbin from machine. Now start inserting E & I stamping in bobbin this should be done in almost alternate fashion. The construction of shell type core by using E & I shape stamping as shown in image below.

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

Step V:- After completion of winding the number of turns of secondary winding, take out bobbin from machine. Now start inserting E & I stamping in bobbin this should be done in almost alternate fashion. The construction of shell type core by using E & I shape stamping as shown in image below.

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

Step V:- After completion of winding the number of turns of secondary winding take out bobbin from machine. Now start arranging the construction of shell type core by using E & I shape Stamping as shown in image below

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

Step VI :- After constructing the core tight the core with the help of screw & bolt along with the supporting frame.

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur

Step VII :- Now apply 230 volt to primary winding and check whether you get desired value of secondary voltage.

Shailesh Khaparkar Gyan Ganga College of Technology, Jabalpur