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


AOC Mexico S.A. de C.V. seen as a prime provider of dielectric gases – also called insulating gases – for the Mexico electrical utilities industry. These gases are employed routinely to either avoid or rapidly tamp down electrical discharges, for which their dielectric characteristics make them most suitable. The most important of these gases and the one most sought from us is sulfur hexafluoride (SF6).

Utilities employ SF6 to electrically insulate high-voltage transformers, sulfur hexafluoride circuit breakers, switchgear, and other comparable sorts of hardware.

Where SF6 circuit breakers are involved, they’re pretty much replacing oil-filled circuit breakers (OCBs), which, due to the fear of their harboring now-banned, environmentally perilous polychlorinated biphenyls (PCBs), have fallen out of favor.

The prevalent use of SF6 under pressure in gas-insulated switchgear is the result of its having a dielectric strength significantly higher than air or dry nitrogen (the latter another gas in wide use by our utilities industry customers).

One important “side benefit” of SF6’s high electronegativity and density is that it permits the utilities industry to reduce the size of electrical gear. This makes it possible to position such gear in more-manageable indoor environments, as opposed to air-insulating it outdoors. Gas-insulated devices located indoors is, of course, less likely to be affected by climate and pollution. In addition, a more-governable environment also promote greater system reliability and longevity.

If for whatever reason you haven’t yet been introduced to SF6 and would like to learn more about its benefits in utilities industry application, talk with AOC Mexico S.A. de C.V., your Mexico PurityPlus® Partner, today.