AC MACHINE REWINDING

This course  describe different technics used to repair and maintain induction motors especially rewinding process 

Objective of the course

At the end of this course a trainees should be able to:

• To identify the motor in normal conditions and abnormal conditions
• To know the causes of damage of a rotating machine
• How to prevent the damage of the machine.
• To change speed of a given system depending on the purpose.
• Interpret the name plate details of the motor and record them.
• Dismantle the motor and remove the rotor (R)
• Collect the winding data (R)
• Draw the development diagram of a 3-phase induction motor having a single layer distributed type unbalanced winding.
• Draw the development diagram of a 3-phase induction motor having a single layer distributed type unbalanced winding.
• Strip the winding from the stator (R)
• Clean the stator and insulate the slots (R)
• Prepare coils and place them in slots for single layer distributed type unbalanced winding.
• Interconnect the coils/groups of the individual phases for the single layer distributed type unbalanced winding.
• Test the motor after the rewinding. (R)
• Preheat and varnish ,impregnate the winding.(R)
• Test run the motor.( R)