High Voltage Bus Systems
SF6 Gas Insulated Lines
A global leader in high-voltage SF6 insulated bus systemsAZZ’s SF6 gas insulated transmission line (GIL) deliver economical long-distance power transmission, with superior reliability and a longer lifecycle to reduce ownership costs. With a compact system design, fabricated elbows and a large current capacity, GIL offer complete system flexibility.
Capitalizing on the advantages of SF6 systemsAs the only North American manufacturer of GIL for use in high-voltage transmission and substation applications, AZZ has developed an optimal alternative to conventional cable systems and overhead lines. Our GIL offer a range of advantages over conventional GIS bus designs, high voltage cables and overhead transmission lines.
- Fabricated elbow design enables changes in direction at any angle between 90˚ and 180˚
- Section lengths of up to 18 meters (60 feet) minimize production and installation costs
- More power per circuit – continuous capacity through 8,000 amperes
- Reduced in-service failures
- Flange bolted design allows for quick installation without specialty-trained crews or special equipment
- Voltage ranges from 115kV – 1,200kV
- Versatile routing options
- Low profile designs for improved aesthetics and security
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Every station layout design has certain physical boundaries to which the transmission components must adhere. If the space available precludes the use of air-insulated bus and a lack of available land prevents continuous transmission line at ground level or below grade, an elevated bus system provides a potential solution.