Abstract:
A circuit breaker including two contacts, a pressurization chamber, a nozzle arrangement designed to blow an arc in a quenching region, with a narrowest passage of a pressurization chamber outflow channel to be passed by outflowing quenching gas defining a pressurization chamber outflow limiting area, a narrowest passage of a nozzle channel to be passed by outflowing quenching gas defining a nozzle outflow limiting area, the smaller area of which defining an absolute outflow limiting area, with quenching gas having a global warming potential lower than the one of SF6 over an interval of 100 years; wherein a ratio of the pressurization chamber outflow limiting area to the nozzle outflow limiting area is less than 1.1:1.
Abstract:
A process for providing a contamination-reducing component to an electrical apparatus, the electrical apparatus including a housing enclosing an insulating space and an electrical component arranged in the insulating space, the insulating space including an insulation medium which includes or consists of carbon dioxide. The process includes the steps of presaturating the contamination-reducing component with carbon dioxide before placing it inside the electrical apparatus.