Diagnosis on Electric Motors - Insulation, Resistance and Inductance Measurement (VW ID 4)

In this video, we go into detail about the various measurements that can be carried out on an electric motor or stator. We use the training modules from LN as well as our model of the VW ID4 front drive.

In the video we deal with the measurement of the insulation resistance as well as the measurement of the coil resistance and the inductance of the coils. With these measured values it is possible to determine whether the stator is fine or defective.

Please excuse the blurred picture at the beginning, must have been due to the person. ;)


0:00 Introduction
0:10 Overview of the used equipment
1:51 Difference between star and delta connection
3:38 Using an insulation meter
5:20 Creating a rotary magnetic field
6:25 Measuring the resistance of the coils
9:10 Measuring the insulation resistance
9:28 Difference between TN and IT Networks
10:44 Measuring the insulation resistance II
13:50 Measuring a faulty insulation resistance
16:11 Measuring a faulty stator
19:04 Using a LCR meter
21:00 Measuring the inductance of the coils
26:41 Difference between resistance and inductance measurement
27:37 Measurements on the VW ID4 electric drive model