Guided scenario30 min· Path total 2 h 30 min

Motor polarization index

ORIENT

What this module is for

Record a PI test and interpret the ratio in terms of insulation condition.

EXPERIMENT

Guided scenario in Motor IR / DAR / Polarization Index Test Record

Record a PI test and interpret the trend.

Launch lab Lab details

Enter one-minute and ten-minute insulation resistance readings.
Record the computed ratio.
Change the one-minute reading and observe how the interpretation shifts.

CHECK

Quick retrieval check

Polarization index is the ratio of:

Ten-minute to one-minute insulation resistanceOne-minute to ten-minute insulation resistanceContact resistance to winding resistanceLeakage current to applied voltage

APPLY

Put it in your own words

State why a single insulation resistance value is weaker evidence than a PI ratio.

Finish this module

Still outstanding before this module can be marked complete:

Lab opened
Guided scenario steps confirmed
Knowledge check submitted
Reflection confirmed

Saved on this device. Sign in to sync privately to your account and resume on another device.