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Get PriceAt this year's Hannover Messe, Siemens will present another medium-voltage switchgear that doesn't require sulfur hexafluoride (SF6) as the insulating gas: the 8DAB 12. The system uses clean air consisting only of the natural constituents of ambient air as the insulating gas.
Get Price18/02/2019In the case of g 3, because there are not sufficiently large quantities to be around today to be recycled, the mixture and any decomposition products are disposed after use by a specialized GE partners. Any new gas can be re-used in the mixing plant. Walter draws a parallel with SF 6: "in the early days, disposal was the norm. Over time, processes were introduced to separate the components, and even polluted products can now be recycled.
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Get PriceSulfur hexafluoride - Wikipedia hexafluoride (SF 6) or sulphur hexafluoride (British spelling), is an inorganic, colorless, odorless, non-flammable, non-toxic but extremely potent greenhouse gas, and an excellent electrical insulator. SF 6 has an octahedral geometry, consisting of six fluorine atoms attached to a central sulfur atom. It is a hypervalent molecule.Typical for a nonpolar gas, it
Get PriceThe basis for the preparation of this guide is CIGRE Brochure No. 276, Guide for preparation of customized "Practical SF 6 handling instructions," August 2005 edition, developed by the Study Committee B3, Task Force B3.02.01. Scope: This guide describes significant aspects of handling SF6 gas used in electric power equipment, such as gas recovery, reclamation, and recycling, in order to keep the gas permanently in a closed cycle and to avoid any deliberate release into the environment.
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Get Pricesiemens sf6 Alternatives Charging in UzbekistanBased on the existing circuit-breaker design, the pure SF6 filling will be replaced by a composition of • 43 percent SF6 and 57 percent CF4 for applications down to -50 &C, and • 25 percent SF6 and 75 percent CF4 for conditions down to -60 &C. Additionally, the rated filling pressure is increased by 1.5 bar to 7.5 bar.
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