Off-Line Diagnostic Testing of Stator Winding Insulation
...is obtained at two different voltages, e.g., at 25% and 100% of the nominal line-to-ground operating voltage, to derive the dissipation fac-tor tip-up. At the lower ...
...is obtained at two different voltages, e.g., at 25% and 100% of the nominal line-to-ground operating voltage, to derive the dissipation fac-tor tip-up. At the lower ...
30 Years of PD Testing of Hydrogenerator Stator Windings The Iris Power PDA test has been commer‐cially available for almost 30 years. This article traces its origin ...
...Epoxy‐mica, aramid papers (NomexTM), epoxy glass laminates and polyamideimides, the main insulating materials found in today’s rotor and stator windings, have in fact been in general
Today’s generators are inherently reliable. A breakdown can, therefore, come as an unexpected and unwelcome surprise for the operator. What’s more, if spare parts are not readily ...
...and the stator and between the top and bottom bars). However there is also a significant force in the tangential direction (circumferential around the endwinding basket between ...
...decades. Main insulation puncture is caused by 1) mechanical wear possibly combined with 2) strong classic PD caused by the damaged slot corona protection and/ or 3) ...