HIT Skid Testing & Dryout of Water-Cooled Generator Stators
Introduction Large utility generators with direct water-cooled stator windings use hollow copper conductors through which demineralized…
Doble Power Factor & Tan Delta Testing of Generator Stators
Introduction Large utility generators rely on high-voltage stator windings whose insulation systems must withstand intense electrical,…
Capacitance Mapping Test on Liquid-Cooled Stator Windings
Introduction In water-cooled (liquid-cooled) stator windings, cooling water flows through hollow copper strands inside each stator…
Stator Wedge Tightness Evaluation | Wedge Tap Test
Introduction Stator wedges in large utility generators mechanically secure the high-voltage winding bars firmly within the…
Stator Visual Inspection Guide for Generators
Background Over years of service, the generator stator is subjected to continuous 120 Hz electromagnetic forces,…
AC High Potential Test on Large Utility Generator Stators
Introduction The AC high potential (HiPot) test is a definitive overvoltage withstand test performed on the…
Stator Winding Transposition Test Guide
Introduction The stator winding transposition test (also called the stator winding group transposition test) is an…
End Winding Bump Test and Modal Analysis
Introduction Large utility generators operate under powerful electromagnetic forces that act on the stator end windings…
ELCID Test for Stator Cores: Electromagnetic Core Detection
Introduction Large utility generators in coal, gas, nuclear, and hydro power plants depend on massive stator…