Negative corona shielding of line and station hardware
AssigneeSlater Steel Industries Limited
InventorsOlaf Nigol, Herbert J. Houston, Adolf Gretzinger
Life of this patent
Estimating the term…
Abstract
A conductor support member includes an external surface having a first portion thereon. The first portion is shaped to generate a localized increase in voltage gradient. Shielding means including surfaces intersecting to define a sharp edge are provided to promote a negative corona discharge adjacent the first portion. The said negative corona discharge produces a positive space charge to reduce the voltage gradient at the first portion. This inhibits the generation of positive corona discharge.
Claims6
A clamp for use with a conductor comprising:
- a body member having an axially extending arcuate-shaped recess formed therein for receiving the conductor;
- a clamping member having an axially extending arcuate-shaped recess formed therein cooperating with the recess in the body member to clamp the conductor and an external surface having a first portion thereof shaped and structured to generate a localized increase in voltage gradient thereon;
- means for interconnecting said body member and said clamping member;
- and
- shielding means including convergent surfaces intersecting to define a sharp edge adjacent an end of the recess in one of the clamping member and body member to promote a negative corona discharge adjacent said first portion, said sharp edge being located in a plane extending perpendicular to the axis of one of the recesses, whereby said negative corona discharge produces a positive space charge to reduce said voltage gradient at said first portion.
A method of inhibiting positive corona discharge from a portion of one side of an external surface of a conductor clamp having an axially extending recess formed therein, said portion being shaped and structured to generate a localized increase in voltage gradient thereon, comprising the step of providing shielding means on said one side of said clamp for promoting negative corona discharge adjacent said portion, said shielding means having convergent surfaces intersecting to define a sharp edge so as to produce a positive space charge to thereby reduce the voltage gradient at said portion, the sharp edge being located in a plane extending substantially perpendicular to the axis of the recess.
Dependencies are inferred from the claim text.