What does the BDV test of transformer oil measure?

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This topic has 1 reply, 2 voices, and was last updated 6 months, 3 weeks ago by 中村零.

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09.02.2026 at 14:16 #3924

山田翔太
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What does the BDV test of transformer oil measure?

09.02.2026 at 14:31 #3925

中村零
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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 electrical stress without failure. Low BDV values usually indicate contamination by moisture, particles, or aging by-products.
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