Description
In Part 2 of our five-part “Basics of Rotating Machine Testing” how-to video series, Alexander Herrera—an OMICRON application engineer specializing in rotating machines—demonstrates how to perform and interpret capacitance and dissipation/power factor (Tan Delta) measurements. Learn how these critical tests provide valuable insights into stator winding insulation health, helping you easily detect aging, moisture, and delamination.
00:08 - Introduction to Capacitance and DF/PF measurements
00:34 - Critical safety precautions during electrical testing
00:56 - Using OMICRON’s CPC 100, TD15, and CR600 for measurements
01:20 - Interpreting Tan Delta and capacitance data as indicators of aging
01:31 - Efficiency: Combining dielectric and partial discharge tests
02:00 - Step-by-step phase measurements and result analysis using plots
Capacitance and dissipation/power factor measurements are among the four primary test procedures recommended for assessing the insulation health and integrity of stator windings in rotating electrical machines. Don't miss the rest of our how-to videos about the following diagnostic measurements:
- Part 1: DC Insulation Resistance & Polarization Index (PI) Measurement
- Part 3: Voltage Withstand (Overvoltage/Hi-Pot) Measurement
- Part 4: Partial Discharge (PD) Measurement
To ensure comprehensive machine maintenance, we also recommend checking for damaging inter-laminar insulation faults (hotspots) in the stator core. Watch Part 5: Stator Core Low Energy (EL CID) Test to see how Alex performs this inspection and analyzes the results.
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