What should be checked during a monthly inspection of EHV equipment concerning bushings?

During a monthly inspection of Extra High Voltage (EHV) equipment, checking the physical condition and integrity of bushings is crucial. Bushings provide insulation between the conductive parts of electrical equipment and the ground, preventing unwanted electrical discharge and ensuring safe operation.

Inspecting the physical condition involves looking for any signs of wear, degradation, or physical damage such as cracks, chips, or contamination. Integrity checks may involve visual inspections for signs of arcing, oil leakage, or other abnormalities that could indicate potential failure.

Proper assessment of bushings ensures that they function correctly and safely under operational conditions, which is vital for the reliability and safety of the entire EHV system. Monitoring their condition helps prevent outages and potential hazards associated with equipment failure.

While other options address important factors like insulation and oil levels, they are not as comprehensive as assessing overall physical condition and integrity, which directly relates to the effective performance and safety of the bushings in EHV equipment.