SPECIALIZED TESTING Services 40KV Surge Testing Electromagnetic Core Imperfection Detector (ELCID) Test End Winding Resonance Test (BUMP Test) Stator Wedge Analyzer (SWA) Test Recurrent Surge Oscillation (RSO) TestBoroscope InspectionDye Penetrant/ Ultrasonic TestInsulation Power Factor Test Corona Probe Slot Partial Discharge Test Off-line Partial Discharge TestAC Impedance Test AC Impedance Test This test applies incrementally increasing voltages to the rotor windings, measuring voltage and current, and calculating impedance to detect turn-to-turn shorts. It is performed with the rotor at rest.