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. Gases of this sort are employed routinely to either avoid or rapidly tamp down electrical discharges, for which their dielectric characteristics render 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 concerned, they’re pretty much replacing oil-filled circuit breakers (OCBs), which, due to the fear of their being polluted with now-banned, environmentally perilous polychlorinated biphenyls (PCBs), are no longer favored.

The prevalent use of SF6 under pressure in gas-insulated switchgear is the result of its exhibiting a dielectric strength significantly higher than air or dry nitrogen (the latter one more gas used almost universally 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 subject to the damages done by climate and pollution. In addition, a controlled environment also promote greater system reliability and longevity.

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