Join us for e-lesson #16 titled: Insulation resistance measurement

Featured

Join us for the lesson #16 of the Transformer testing course, authored and hosted by Balazs Sztari. The lesson is presented on the Master’s level and here you can register.

This lesson will cover the fundamentals of insulation resistance measurement on power transformers. Insulation resistance is a simple yet important test method for checking the quality of transformer insulation. We’ll discuss the relevant standards, the theoretical background of DC voltage application, and the instrumentation required. The measurement process, including the use of guard potential to isolate individual insulation components, will be explained. Insulation resistance can be measured between windings, between windings and ground, and on the core and frame. Temperature correction and the lack of standard acceptance criteria will also be addressed. This lesson provides a comprehensive overview of this essential transformer diagnostic technique.

The content of this lesson is fully vendor agnostic but it is sponsored by Intellirent. 

Learn about relevant standards, test and evaluation methods, and requirements for test equipment of no-load loss and current measurement of power transformers.

Insulation resistance measurement is most basic insulation test method, which is part of the factory and site tests of every transformers.

This lesson presents the theoretical background and practical application of this measurement.