SF6: The “Perfect” Gas for the Columbus Utilities Industry


Delille Oxygen Company seen as a prime producer of dielectric gases – also commonly referred to as insulating gases – for the Columbus electrical utilities industry. These gases are employed routinely to either avert or quickly extinguish electrical discharges, for which their dielectric properties render them most suitable. The most prominent of these gases and the one most purchased from us is sulfur hexafluoride (SF6).

Utilities work with SF6 to electrically insulate high-voltage transformers, sulfur hexafluoride circuit breakers, switchgear, and other such hardware.

Where SF6 circuit breakers are involved, they’re almost singularly taking the place of oil-filled circuit breakers (OCBs), which, due to the fear of their being polluted with now-banned, environmentally toxic polychlorinated biphenyls (PCBs), are no longer favored.

The extensive use of SF6 under pressure in gas-insulated switchgear is due to its exhibiting a dielectric strength markedly higher than air or dry nitrogen (the latter one more gas used widely by our utilities industry customers).

One major perk of SF6’s high electronegativity and density is that it allows the utilities industry to reduce the size of electrical gear. This, in turn, permits placing such gear in more-practicable indoor environments, as opposed to air-insulating it outdoors. Gas-insulated hardware situated indoors is, of course, less likely to be affected by climate and pollution. In addition, a more-governable environment also helps ensure greater system trustworthiness and longevity.

If for whatever reason you’ve never used SF6 and would like to understand more about its benefits in utilities industry application, get hold of Delille Oxygen Company, your Columbus PurityPlus® Partner, today.