U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Gas-insulated line with an incorporated power capacitor and circuit breaker

Patent 6091039 Issued on July 18, 2000. Estimated Expiration Date: Icon_subject November 5, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3829707

Electric conduit assembly for transmitting electric power at UHV and EHV levels
Patent #: 4078184
Issued on: 03/07/1978
Inventor: Phelps ,   et al.

Pressurized gas circuit-breaker having opening and closing resistors
Patent #: 4439651
Issued on: 03/27/1984
Inventor: Thuries ,   et al.

Circuit breaker with varistor-assisted interruption
Patent #: 5170023
Issued on: 12/08/1992
Inventor: Pham, et al.

SF6 circuit-breaker incorporating both a varistor and a capacitor
Patent #: 5235147
Issued on: 08/10/1993
Inventor: Pham, et al.

Insulation gas filled circuit breaker Patent #: 5728989
Issued on: 03/17/1998
Inventor: Utsumi, et al.

Inventors

Application

No. 186418 filed on 11/05/1998

US Classes:

218/145, With capacitor218/43, Air-current blowout218/144, With capacitor361/605, Electrical switchgear361/618Gas insulated

Examiners

Primary: Scott, J. R.

Attorney, Agent or Firm

Foreign Patent References

  • 0 417 813 A2 EP. 03/25/1991
  • 0 750 380 A1 EP. 12/25/1996
  • 2 685 562 FR. 06/25/1993
  • 2 273 615 GB. 06/25/1994

International Classes

H01H 033/16
H02B 005/00
H02B 013/035

Foreign Application Priority Data

1997-11-06 FR

Abstract

The gas-insulated line comprises a conductor (1A) disposed inside a case (3A) filled with a dielectric gas under pressure. A power capacitor (5) is electrically connected to the conductor while being disposed inside a compartment (3P) secured to the case (3A) and filled with a dielectric gas under pressure. The dielectric gas present in the compartment (3P) provides electrical insulation for the compartment relative to the power capacitor (5). In this way, electrical insulation of the gas-insulated line between the conductor (1A) and the case (3A) is maintained inside the compartment (3P) in which the power capacitor (5) and the conductor (1A) are electrically interconnected. This results in the gas-insulated line of the invention retaining small bulk and the ability to be used on the ground or buried.

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