What does the BDV test of transformer oil measure?

Tagged: answer, FAQ, oil, question, transformer, transformer oil

This topic has 1 reply, 2 voices, and was last updated 5 months, 1 week ago by Kamil.

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08.02.2026 at 17:57 #3782

Félix
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What does the BDV test of transformer oil measure?

08.02.2026 at 18:12 #3783

Kamil
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The BDV test measures the breakdown voltage of transformer oil, indicating its dielectric strength. It shows the oil’s ability to withstand electric stress without electrical breakdown. Low BDV values typically indicate contamination by moisture, particles, or aging by-products, signaling the need for oil treatment or replacement.
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