What is Conductor Resistance Test?

What is Conductor Resistance Test?

Conductor Resistance Test Definition

The conductor resistance test measures the DC resistance of copper or aluminum conductors to determine how easily they allow current flow.

Importance of Resistance

Higher resistance in a conductor results in less current flow, which is crucial for efficient power transmission.

Test Equipment

The test uses a Kelvin Double Bridge or Wheatstone Bridge to measure resistance accurately.

Testing Procedure

• Connect the specimen to the resistance measuring bridge and make sure that proper considerations are taken into account about the contact resistance.

• Measure the resistance and note down the temperature.

• Measured resistance is converted to the standard temperature and length.

Calculation

Observed Resistance at a particular temperature,

R t = Observed Resistance

K = Temperature correction factor

L = Length of specimen in m.

Conclusion

The test results indicate if the conductor meets specified resistance standards, ensuring reliability in electrical power cables.