A contact resistance test (also known as a ductor test) measures the resistance of electrical connections such as joints, terminations and connectors. These can be connections between any two conductors, for instance busbar sections or cable connections. The test measures the resistance at the micro- or milli-ohm level and is used primarily to verify that electrical connections are made properly, and can detect the following problems:
- Loose connections
- Adequate tension on bolted joints
- Eroded contact surfaces
- Contaminated or corroded contacts
Raytech Micro Centurion II MC2 200A Precision Micro Ohm Meter is a vital tool used in electrical troubleshooting. Allowing the measurement of extremely low resistance and the detection of minute resistance changes, the Micro-Ohm Meter offers a wide range of features for effective low resistance measurement.
The Raytech Micro Centurion II features a pure filtered DC power supply to ensure that it only gives clean power with minimal ripple. The Micro-Ohm Meter has a current output of 200 Amperes which allows it to measure resistance accurately from 0.01 µΩ up to 5 Ω. An automatic internal diagnostics and calibration system allows for accuracy every time. You can attach the Raytech Micro Centurion II to a computer using its Centronics port or through its RS232 serial port for remote diagnostics. With rugged construction that allows the Micro-Ohm Meter to tolerate drops as high as 1 meter without damage, this test set is suitable for field and industrial use.
Related electrical test equipment available for rent from Protec:
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Editor’s Note: This post was originally published November, 2014 and has been updated freshness, accuracy and comprehensiveness.