History

  • Sulfur Hexafluoride (SF6) discovered in 1900 by Henri Moissan
  • In 1937 it was discovered that SF6 possessed a much higher dielectric strength than air
  • Major supplier Allied Signal (Silver Bottle) began processing SF6 gas in 1948

Electrical Applications

  • Circuit Breakers 345-500 kV
  • Puffer Breakers – SF6 used in place of air, oil or vacuum
  • Switches 7.5-35 kV
  • Gas Insulated Transmission Lines
  • Mini Substations; space requirements are as little as 10-20% of air-insulated substations

Non-electrical Applications

  • Magnesium Casting
  • Aluminum Degassing
  • Leak Detection
  • Particle Accelerators (Universities)
  • Window Pane Insulation
  • Nike-Air Shoes

SF6 Characteristics

Sulfur Hexafluoride has a unique combination of physical and electrical properties:

  • Chemical Inertness
  • Thermal Stability
  • Non-toxicity
  • Excellent Heat Transfer
  • Non-flammability
  • High dielectric/breakdown strength
  • Non-corrosive
  • Ability to regenerate
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SF6 a Greenhouse Gas

Sulfur Hexafluoride is a fully fluorinated compound (FFC), and since FFC’s have lifetimes of up to 50,000 years in the atmosphere, these powerful greenhouse gases can add a lot to global warming if emissions are allowed to continue to grow.

For example, SF6 has almost 25,000 times more global warming potential than CO2!!

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SF6 Gas Recovery Products


SF6 Gas Recovery Unit (GRU-4)

  • Convenient and portable handcart mounted SF6 Gas Recovery Unit.
  • Extremely easy to operate.
  • Ideally suited for consolidating partially-used SF6 bottles.
  • Purifies, dries and filters SF6 to 0.1 micron during recovery and re-filling.
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SF6 Gas Recovery Unit (GRU-7)

  • Fast SF6 Gas Recovery.
  • Easy single valve operation.
  • 180 lb. (82 kg.) available on-board storage capacity.
  • Ideal for use in outdoor applications.
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SF6 Gas Recovery Unit (GRU-8)

  • Fast SF6 Gas Recovery.
  • Easy single valve operation.
  • Up to 600 lb. (300 kg.) available on-board storage capacity.
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SF6 Gas Transfer Unit (GTU)

  • Low cost solution for SF6 gas recovery.
  • Small, portable and easy to use.
  • Exclusive color change moisture indicator displays SF6 “dryness”.
  • High pressure liquefaction of SF6.
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SF6 Gas Servicing Cart (E736A)

  • Full sized line with storage capacities up to 4,000 lbs (1,800 kg).
  • Oil-Less, Oil-Free and standard compressor options available.
  • Fully automatic or manual operation available.
  • Specifically suited for larger sized circuit breakers.
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SF6 Gas Storage Tank (E736T)

  • Sizes to suit every need, up to 4,000 lbs (1,800 kg).
  • Tanks are certified to ASME Code.
  • Stationary or Mobile units available.
  • Internals are specially coated to prevent corrosion.
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SF6 Evacuation & Refill Unit (ERFU-2)

  • Single valve operation
  • Large tires for easy movement over gravel yards
  • Permanently mounted high capacity, high vacuum pump
  • User adjustable regulated gas refilling
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