Corona ring

Corona discharge on insulator string of a 500 kV transmission line.

(left) Grading rings on 1.4 million volt x-ray generator at US Bureau of Standards in 1947. (right) Corona caps and rings on Cockcroft-Walton particle accelerator from 1937, now in Science Museum, London.

A corona ring, also called an anti-corona ring, is a toroid of conductive material, usually metal, which is attached to a terminal of high voltage equipment. The role of the corona ring is to distribute the electric field gradient and lower its maximum values below the corona threshold, preventing corona discharge. Corona rings are used on very high voltage power transmission insulators and switchgear, and on scientific research apparatus that generates high voltages. A very similar related device, the grading ring is used around insulators.

单词	Grading ring
释义	Grading ring 英语百科 Corona ring A corona ring, also called an anti-corona ring, is a toroid of conductive material, usually metal, which is attached to a terminal of high voltage equipment. The role of the corona ring is to distribute the electric field gradient and lower its maximum values below the corona threshold, preventing corona discharge. Corona rings are used on very high voltage power transmission insulators and switchgear, and on scientific research apparatus that generates high voltages. A very similar related device, the grading ring is used around insulators.
随便看	characteristic of a developable surface characteristic of a family of surface Characteristic of a field characteristic of a light signal characteristic of a logarithm characteristic of atmospheric transmission characteristic of attributes characteristic of channel characteristic of char residue characteristic of coke characteristic of correspondence characteristic of criminal1 characteristic of damper characteristic of dampness being descending characteristic of dampness being heavy and turbid characteristic of dampness being sticky and stagnant characteristic of data processing characteristic of developable surface characteristic of dryness being dry and puckery characteristic of effective area variation characteristic of electrode consumption characteristic of family of surfaces characteristic of field characteristic of fire being flaring up characteristic of fluid

Grading ring

Corona ring