Arcing horn & Corona rings

Arcing horn & Corona rings

In a transmission line, an "arcing horn" is a protective device designed to divert a potential electrical arc away from the surface of an insulator during a fault or lightning strike, preventing damage to the insulator, while a "CC Ring" (also known as a "grading ring") is a metal ring installed at the end of an insulator string to help distribute the electric field more evenly, reducing the likelihood of corona discharge at sharp edges.

Key Features:

• Arcing horns are usually paired on either side of an insulator.
• CC rings are usually installed at the top and bottom of an insulator string, where the conductor connects to the insulator.
• Arcing horns are used to protect against overvoltages caused by lightning strikes, atmospheric electricity, or electrical faults.
• Corona rings are used to reduce noise and corona from the system