A stator winding insulation, at different stages in the aging process ... the harmonics also provide information about the condition of the corona protection shield and the stress grading system used ...

These measurements are calculated differently using complementary angles as shown in Fig. 1. However, for modern stator winding insulation systems, power factor and dissipation factor are often used ...

A small 0.75 horsepower, 4-pole, 460 V, Class F AC motor (Figure 1) was chosen for the model rewind. This motor was selected as it is compact in size and has lightweight dimensions to allow easy ...

The new Mongemo on-line partial discharge (PD) monitoring system from Omicron continuously assesses the dielectric condition of stator insulation in rotating machines under load, such as turbo ...

According to General Motors, the subsequent investigation revealed that shoddy insulation could result in wire-to-wire contact within the stator. This, in turn, leads to a sudden loss of motive ...

In order, they are bearing failure, stator winding insulation failure, and rotor mechanical failure. NovaTorque’s unique motor design either eliminates or substantially mitigates each of these failure ...