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Why 400kVA and above the transmission line have bundled conductor?
Wiki User
∙ 12y ago
To reduce the electric field intensity at the surface of the conductor which can lead to corona discharge and insulation breakdown. By using bundled conductors, the electric field is distributed between the four (in the case of 400-kV lines) conductors, thus reducing the field intensity per conductor.
Wiki User
∙ 12y ago
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