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Motor Winding Temperature Rise Test by the Resistance Method

Approx. component budget: Rs. 3,000 - 6,000

Objective

Carry out a heat run on a small motor and calculate the temperature rise as in a test-lab procedure.

What you will build

A test set-up measuring a motor's winding resistance cold and hot, with thermocouples and a data logger, to calculate temperature rise and compare it with standard limits.

Results you can expect

• Cold and hot resistance
• Temperature rise by resistance method vs thermocouple method
• Cooling curve
• And a comparison with the insulation-class limit

What you will learn

Standard test procedures, insulation classes, thermal behaviour and measurement uncertainty.

Tools and notes

Small induction motor, milli-ohm meter or 4-wire measurement, K-type thermocouples, logger, Excel. Follow the relevant IS/IEC test method and keep guards on.

Resume points from this project

• Built and tested Motor Winding Temperature Rise Test by the Resistance Method; objective: carry out a heat run on a small motor and calculate the temperature rise as in a test-lab procedure.
• Measured and analysed cold and hot resistance and temperature rise by resistance method vs thermocouple method; wrote the report and presented the results in a viva. Add your own numbers: [x].

Replace [x] with your own measured results. Write only what you really did.

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