Rewinding and Testing of Electric Motor — Lesson 3

This lesson covers the process of rewinding an electric motor, specifically a 36-slot, 6-pole motor designed to rotate at a speed of 1000 rpm. The lesson covers the dismantling of the motor, identifying its parts, removing the existing winding, threading and varnishing. It explains how to make new coils based on the motor's voltage and power rating. The coils are inserted into the motor, the machine is reassembled, and then tested. The lesson also covers safety precautions, such as wearing gloves and using a rubber hammer to avoid damaging the enamel. The lesson concludes with a demonstration of testing the rewound motor's speed using a tachometer.

Video Highlights

00:00 - Introduction
02:11 - Reassembling the motor
12:57 - making the coilsc
34:00 - Marking the terminals
01:01:53 - Assembling the motor by doing Threading and varnishing
01:18:59 - Testing the motor

Key Takeaways

- The process of rewinding an electric motor involves dismantling the motor, removing the existing winding, making new coils, and reassembling the motor.
- Safety precautions, such as wearing gloves and using a rubber hammer, are essential to prevent damage to the motor and the person working on it.
- The number of coils and their placement in the motor is determined by the motor's voltage and power rating.
- After the motor is rewound, it is important to test its speed to ensure it is functioning correctly.