| When an 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? |
| A) The polarization index is the ratio of the insulation resistance taken at one minute to the insulation resistance taken at ten minutes. |
| B) The polarization index is the ratio of the insulation resistance taken at thirty minutes to the insulation resistance taken at one minute. |
| C) The polarization index is the ratio of the insulation resistance taken at ten minutes to the insulation resistance taken at one minute. |
| D) The polarization index is the insulation resistance taken at ten minutes. 296 August 2014 --------------------------------------- 297 United States Coast Guard Electrical-Electronic-Control Engineering National Maritime Center First Assistant-Chief Engineer Ltd |
