| 摘要 |
<p>Use of a mixture (A) comprising a fluoroketone and carrier gas as a medium for electrical insulation and/or quenching electric arcs in a high voltage electric appliance, is claimed, where the fluoroketone is octafluorobutan-2-one and is present in the mixture in a molar percentage (M) of at least 95 mole%. Use of a mixture (A) comprising a fluoroketone and carrier gas as a medium for electrical insulation and/or quenching electric arcs in a high voltage electric appliance, is claimed, where the fluoroketone is octafluorobutan-2-one and is present in the mixture in a molar percentage (M) of at least 95 mole%, where M is determined by a equation: (P c 4 k/P m i x t u r e)x 100 (I), where P m i x t u r eis a pressure, expressed in kilopascals, of mixture at 20[deg] C in the electric appliance, P c 4 kis a pressure, expressed in kilopascals, which is equivalent to saturation vapor pressure, at 20[deg] C, which is present in octafluorobutan-2-one at the lowest temperature of the electric appliance, and the P c 4 kis determined by a equation: (PVS c 4 kx 93)/T m i n i m a l(II), where the PVS c 4 krepresents saturation vapor pressure of octafluorobutan-2-one at the lowest temperature of the electric appliance, expressed in kilopascals, and T m i n i m a lrepresents the minimum temperature of the electric appliance, expressed in Kelvin. An independent claim is included for a medium voltage electric appliance comprising a sealed enclosure in which the electrical components are located, and a mixture comprising the carrier gas and the fluoroketone.</p> |
