Methods for Dielectrically Insulating Electrical Active Parts

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes methods and compositions for use as dielectric insulating media for electrical active parts (e.g., in switchgears, transformers, and cables). The invention specifically utilizes certain sulfur fluoride compounds, especially trifluoromethoxy sulphurpentafluoride (SF5(OCF3)), either alone or in mixtures with inert gases or other fluorinated compounds, to enhance insulation, arc-extinguishing, and switching performance. These new compounds offer better environmental and safety profiles compared to conventional insulating gases such as SF6.

Use CasesContent extracted from patent full text and abstract with AI.

• Medium- and high-voltage switchgear insulation (e.g., GIS, circuit breakers)
• Insulation for high-voltage cables and transmission lines
• Gas-insulated transformers and transformers accessories
• Electrical apparatus requiring gas-tight dielectrical insulation, such as current or voltage transformers, surge arresters, and bushings
• Insulation in electrical rotating machines, generators, and motors
• Replacements for greenhouse gases (e.g., SF6) as dielectric media in the electrical grid
• Dry etching and chamber cleaning in semiconductor manufacturing
• Blowing agents for foam production in the plastics industry
• Propellants for aerosols
• Heat transfer media in cooling systems

BenefitsContent extracted from patent full text and abstract with AI.

• Improved dielectric insulation and arc suppression compared to traditional SF6-based systems
• Lower environmental impact, including reduced global warming potential (GWP) and ozone depletion
• Enhanced safety due to lower toxicity and improved occupational exposure profiles
• Greater chemical inertness and compatibility with construction materials used in electrical devices
• Wider operational temperature and pressure ranges due to better thermal stability and vapor pressure characteristics
• Ability to tailor compositions for specific applications by mixing with inert gases or other fluorinated compounds
• Potential to comply with evolving environmental regulations banning or restricting SF6

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The invention concerns methods for dielectrically insulating electrical active parts using certain sulphur fluorides, as well as compositions and apparatus comprising such compounds.