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    E-lesson

    Transformer Testing Course – e-lesson #7: Lightning impulse test (part I)

    Illustration - t.testing course 850 x 400
    Course: Intermediate level

    Hosted by: Balazs Sztari

    Lightning impulse and chopped wave LI tests are the highest peak value dielectric tests, those intended to verify the insulation integrity for stresses caused by atmospheric overvoltages and transients.

    Welcome to the seventh e-lesson in the transformer testing course, where we will focus on the topic of lightning impulse testing. This is a crucial test that verifies a transformer's capability to withstand fast-rising transients, typically associated with lightning strikes. You will learn about the standardized waveform requirements, the key test equipment involved, and the proper test connections for different winding configurations. The test procedure, including the sequence of impulses, will be covered, as well as the evaluation and interpretation of the test results. At the end, we will gauge your interest in a deeper dive into this subject matter for a potential follow-up lesson. Let's begin exploring the fundamentals of lightning impulse testing for power transformers.

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    In the seventh lesson of Transformer Testing Course, you can learn about the basics and techniques of lightning impulse test with the usual detailed explanations.

    Keywords: Power Transformers, Transformer Testing, Lightning impulse, High voltage, Measurement

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    In order to ensure that your registration was successfully completed, please, after applying for the e-session, carefully check the inbox of the email account you are using. If you don’t see the confirmation email, please check your spam / junk folder as well. If the confirmation email is in that folder, please, move it to your inbox. This should eliminate any future issues with the registration process.

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    To access the e-lesson, use the room link provided in the confirmation email.

    About the author

    Balazs Sztari

    Balazs Sztari

    Balazs Sztari graduated as electrical engineer in Budapest. Beside of factory acceptance tests, his team performs commissioning, diagnostics and R&D tests on power transformers and rotating machines.

    He is currently a member of Cigre A2.53 working group.

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