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Conductor Resistance

Electrical FOR: Conductor $780

This test determines a conductor’s direct current (DC) resistance at a specified reference temperature (typically set at ambient temperature). There are two methods used to conduct this test known as the Kelvin Bridge Method and the Wheatstone Bridge Method, which are used to obtain the resistance of the specimen. Both methods will give similar results, however, the Kelvin Bridge Method is more accurate. At the end of the test, the reported results include the specimen’s conductor resistance and the test parameters.

Procedure

  1. Perform visual examination of the sample and record any defects found.
  2. Strip insulation from both ends of the test sample and attache to test circuit.
  3. Record the ambient temperature.
  4. Place a low electrical current and precision voltage on the test sample. Record the voltage drop on the sample.
  5. Report the calculated conductor resistance and test conditions.

Covered specifications

  • AS4373 Method 403
  • AS6324 Method 5.1.3
  • AS22759 Paragraph 5.4.1
  • AS29606 Method 5.5
  • AS81044 Method 4.7.5.5
  • AS85485 Method 4.7.8
  • ASTM B298 Method 8.2
  • ASTM D4566 Method 13
  • FED-STD-228 Method 6021
  • ISO 19642-2 Method 5.2.1
  • MIL-DTL-24643C Method 4.9.4
  • MIL-DTL-25038J Method 4.6.9
  • MIL-STD-2223 Method 5003
  • ISO 6722 Method 5.4
  • AS6370 Method 4.6.4
  • ASTM B193
  • ASTM B267 Method 6
  • ASTM B33 Method 8.1.2
  • ASTM B344 Method 7
  • ASTM B355 Method 6.2
  • ASTM B470 Method 6.4
  • IS 10810 Method 5
  • NEMA HP-3 Method 6.2.1
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