What kind of indicators can suggest excessive loading on windings?

High winding temperature is an essential indicator of excessive loading on windings. When a generator is subjected to heavy loads, the electrical resistance in the windings generates heat due to increased current flow. If the load exceeds the design capacity, this can lead to a rise in the temperature of the windings, indicating that they are operating under stress. Elevated winding temperatures can accelerate insulation degradation, reduce the lifespan of the generator, and increase the risk of failures or damage.

Monitoring winding temperature is crucial for maintenance and operational efficiency because consistent high temperature readings signal that the generator may be approaching or exceeding its thermal limits. Thus, keeping an eye on the winding temperature allows operators to take appropriate actions, such as reducing the load or enhancing cooling systems, to ensure safe operation and to prevent catastrophic failures.