A corona ring is a high-voltage line hardware component installed around terminals, insulators, bushings, and other energized fittings to control electric-field concentration. By distributing the electric field more uniformly, it helps reduce corona discharge, electrical stress, radio interference, and surface deterioration, improving the reliability of transmission and substation equipment.
Key Features:
- Electric-field control: Reduces localized voltage gradients around high-voltage fittings.
- Corona suppression: Minimizes corona discharge and associated energy losses.
- Uniform field distribution: Helps prevent excessive electrical stress at terminals and fittings.
- Reduced radio interference: Limits electromagnetic interference generated by corona activity.
- Insulation protection: Helps reduce surface erosion and premature insulation degradation.
- High mechanical strength: Designed to withstand electrical and environmental loads.
- Corrosion resistance: Available in materials and finishes suitable for outdoor transmission environments.
- Easy installation: Compatible with various insulators, bushings, and high-voltage fittings.
- Transmission-line applications: Suitable for high-voltage and extra-high-voltage power-line and substation infrastructure.
