Transformer Testing course - e-lesson #16 - illustration 850 x 400

E-lesson: Transformer Testing Course – e-lesson #16: Measurement of zero-sequence impedance

Course: Master’s level
This is the 16th lesson in the Transformer Testing Course, authored and conducted by Balazs Sztari. Get the room link now!

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The zero-sequence impedance on three-phase transformers is important for calculation of asymmetrical fault cases, therefore it is measured during factory acceptance tests. In this lesson you will learn how to perform this test and how to understand the results. We will discuss this important parameter for three-phase electrical network design and fault calculations. Join us and learn how to measure properly.

Keywords: power transformers, transformer testing, zero-sequence impedance, homopolar impedance, measurement

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.

Balazs Sztari

Ganz Electric

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