Sulfur hexafluoride

Summary:Sulfur hexafluoride is a colorless, odorless, non-toxic and non-corrosive compound. At normal temperature, it is gaseous and non-flammable gas, and it is a non-metallic oxide with good chemical stability. Due to its excellent chemical and thermal stability, it will not be decomposed at 500℃ under the condition of ensuring purity. Because of its excellent insulation performance and arc reduction ability, even in the arc instantaneous decomposition, ionization, but also can be quickly restored to the original stable state after arc reduction, so the use of its high chemical stability and excellent electrical insulation characteristics, widely used with the electrical industry and ultra-high voltage insulation materials. In addition, it has the characteristics of large heat transfer coefficient and good cooling effect.

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Sulfur hexafluoride is widely used as insulating material and arc reducing medium of high and medium voltage electrical equipment. Antioxidant, weather tracer, refrigerant and heat carrier for metal smelting and manufacturing process. An insulating gas used in medicine for X-ray devices. It can also be used for basic scientific research of monocrystalline silicon.

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specification Implementation standard Maximum pressure SF6 Filling weight
(Unit :kg)
4LSeamless cylinder GB5099-94 12.5MPa 5
6LSeamless cylinder GB5099-94 12.5MPa 8
8LSeamless cylinder GB5099-94 12.5MPa 10
10LSeamless cylinder GB5099-94 12.5MPa 12
12LSeamless cylinder GB5099-94 12.5MPa 15
15LSeamless cylinder GB5099-94 12.5MPa 20
25LSeamless cylinder GB5099-94 12.5MPa 30
40LSeamless cylinder GB5099-94 12.5MPa 50
43.3LSeamless cylinder DOT3AA 2265Psi 50
48.8LSeamless cylinder DOT3AA 2400Psi 50
500Welded cylinder GB5100-2011 12.5MPa 600

 

Items IEC60376(2005) Index (GB/T12022-2014) Enterprise internal control sulfur hexafluoride index
(SF6) Sulfur Hexafluoride purity (mass fraction)/10-2 99.7 99.9 99.997
Air content(Mass fraction)/10-6 ≤ 2000 300 10
CF4 Carbon Tetrafluoride content(Mass fraction)/10-6 2400 100 1
C2F6 Hexafluoroethane content(Mass fraction)/10-6 / 200 20
Octafluoropropane (C3F8) content(Mass fraction)/10-6 / 50 1
Moisture content of H2O Mass fraction/10-6 25 5 2
Dew Point Dew point/℃ ≤ -36.0 -49.7 -49.7
Acidity(in HF) (Mass fraction)/10-6 1.0 0.2 0.1
Acidity(in HF) (Mass fraction)/10-6 1.0 0.2 0.1
Fluoride Hydrolysable Fluoride (in HF) content(Mass fraction)/10-6 / 1 0.2
Mineral oil content(Mass fraction)/10-6 10 4 2
Toxicity test Non-toxic Non-toxic Non-toxic
Remarks Inspection basis:GB/T12022-2014

 

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keyword: Sulfur hexafluoride

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