Yes, it is possible to check the DC bus capacitors. Perform this test only if the converter bridge and inverter bridge tests are good.
Test the capacitors using a multi-meter in ohmmeter mode between the terminals PC and PA.
The resistance should begin at a low level and should increase progressively (as the capacitors charge).
If this does not happen, the charging resistor or the capacitors are defective.

Released for:Schneider Electric India