When a high voltage system insulation test value is suspect or recorded during an annual survey, a polarization index test is performed. What is the polarization index?

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Accepted Answer

The polarization index is the ratio of the insulation resistance taken at ten minutes to the insulation resistance taken at one minute.

Answer

The polarization index is the ratio of the insulation resistance taken at thirty minutes to the insulation resistance taken at one minute.

Answer

The polarization index is the ratio of the insulation resistance taken at one minute to the insulation resistance taken at ten minutes.

Answer

The polarization index is the insulation resistance taken at ten minutes.

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