Sf6 gas properties

As the demand for this gas was increasing, many manufacturers in Europe and America started producing SF gas in large scale, during that time. Jump to navigation Jump to search. Sulfur hexafluoride Names IUPAC name. SF or sulfur hexafluoride gas molecules are combined by one sulfur and six fluorine atoms.

The dielectric strength of the gas increase with pressure and is more than that of the dielectric oil at high pressures. Physical and chemical properties of sulphur hexafluoride.

MyAirProducts Contact Us Customer Support. Air Products Worldwide Argentina. SFproperties, and use in MV and HV switchgear Contents Introduction 1. A brief history of use of SFp. Overview on SFswitchgear 3. The reason for the exemption, writes Nicholas Ottersbach, researcher, that there was no viable alternative.

The gas is used in the final stage of ASHRAE 1fume hood qualification. At normal temperatures, it is non-corrosive, and is fairly inert, although at temperatures above 500C,. Sulphur hexafluoride possesses very good insulating and arc quenching properties.

It is colourless, odourless, non-toxic, and non-inflammable gas. Chemical Formula SF Molecular Weight 146. C (1atm) Melting Point -50. C (224kPa) Boiling Point -63. C, 1atm) Density (gas) 6. Recently, it has gained increased use as a dielectric and arc quenching medium in a variety of high-voltage applications, including circuit breakers, load-break switches, and substation buses.

Since then, our product portfolio has successively been developed to the widest product range of emission-free gas handling equipment worldwide. SFgas as insulating and arc-quenching medium. Eyes: Direct contact with the liquefied material, compressed gas , may cause frostbite injury.

Ingestion: Not applicable ( gas at normal conditions). Colourless in-noxious and non-flammable gas at atmospheric temperature, with a molecular weight of 146. SFis an excellent insulating and extinguishing gas. It is one of the most stable gaseous chemicals and the inertia is similar to that of nitrogen gas. The principal characteristics of the gas are as follows:Molar mass 146.

In short, SFat atmospheric pressure is a heavier gas than air, it becomes liquid at - 63. Critical temperature 45. C andin which noise propagates badly.

SFon the marketSFwhich is delivered in cylinders in liquid phase,.

During operation of SFcircuit breaker, this highly compressed gas is released through the arc in the breaker and collected to a relatively low-pressure reservoir and then it is pumped back to the high-pressure reservoir for reutilizing. Instead of oil, air, or a vacuum, a sulfur hexafluoride circuit breaker uses sulfur hexafluoride ( SF) gas to cool and quench the arc on opening a circuit. GW Electric offers a wide selection of padmount SFswitches for systems rated 15.

V through kV, 40kA asymmetrical momentary, and 630A to 900A continuous current.