Testing the effectiveness of electrical insulators can be done using Power factor testing. This test applies to medium and high voltage equipment such as transformers, oil filled capacitors, motors, bushings or any electrical device with an insulator. Doble Engineering is one of the leading manufacturers of Power factor testers. One popular tester is the Doble M4000 M4100 Power Factor Insulation Analyzer.
Insulation needs to be inspected regularly to prevent unexpected breakdowns. The Doble M4000 M4100 is commonly used in this type of testing. The M4000 M4100 is a high performance test set that features a 300 milli-ampere output current at 10 KV. It has the capability to generate its own sine wave test signal for accurate measurements. This test set measures power factor, tan delta, excitation current and capacitance. Depending on the environment in which the testing is being performed, electrical interference can significantly affect the test results. To address this potential problem, The M4000 M4100 features interference rejection capabilities to reduce the impacts of electrical interference on measurement accuracies.
Related electrical test equipment available for rent from Protec:
Doble F6150 Relay Testing System
Megger CB-100 28V Power Factor Test Set
Omicron CPC 100 Multi-Functional Primary Test System
This electrical test equipment is available for rent, lease, or purchase from Protec Equipment Resources. We are here to help you with your testing equipment needs.
Wherever the job takes you (and the equipment), with Protec’s multiple locations, we always ship from the office closest to your desired drop location (if the electrical test equipment you need is in-stock at that location), and the equipment can be returned to the nearest office.
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Editor’s Note: This post was originally published December, 2010 and has been updated freshness, accuracy and comprehensiveness.