Halos around HV insulators are caused by a phenomenon known as corona discharge. This occurs when high voltage electricity ionizes the air around the insulator, creating a glowing halo effect.
In most cases, halos around HV insulators are not dangerous. They are simply a visual effect caused by the corona discharge. However, if the insulator is damaged or malfunctioning, it could potentially lead to a dangerous situation.
Yes, halos around HV insulators can affect the performance of the insulator. The corona discharge can cause a loss of energy and may also produce ozone, which can degrade the insulator over time.
Halos around HV insulators can be prevented by ensuring the insulators are properly designed and maintained. This includes regular cleaning and inspection to detect any damage or malfunctioning that could lead to corona discharge.
While halos around HV insulators may be seen as a visual nuisance, they can also serve as an indicator of potential issues with the insulator. If the halos suddenly change in size or intensity, it could signal a problem that requires attention.