Megger MIT520/2 User Manual page 9

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Figure 2 - The result of a polarity index test (PI)
Test settings: T1 and T2 times set in order to measure the DAR
Test conditions: timer defaults to 10 minutes, as this is required for a PI
reading
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Figure 3 - The result of a dielectric discharge test (DD)
Test settings: T1 and T2 times set in order to measure the DAR
Test condition: test runs for longer than 10 minutes as this is required for
a PI reading.
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