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Arcing horns bushing insulator

Electric stress in the bushing insulator, arcing horns insulation, electric field in the insulation

Arcing horns protect bushings in case of the overvoltage.

Problem Type: electrostatics.

Geometry: 3D import.

Given:
Relative permittivity of air ε₀ = 1,
Relative permittivity of insulator ε_r = 6,
HV = 6 kV (RMS).

Task:
Calculate electric field stress distribution along the bushing insulator surface and in the spark gap.

Results:
Electric field distribution in the spark gap.