Assertion: corona ring | /r/ObjectUse | used on switchgear
Facets:
Source sentences:
text: Corona rings are used on very high voltage power transmission insulators and switchgear, and on scientific research apparatus that generates high voltages.
text: Corona rings are used on extremely high voltage apparatus like Van de Graaff generators, Cockcroft–Walton generators, and particle accelerators, as well as electric power transmission insulators, bushings and switchgear.