US4821141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas insulated switchgear
Assignee: Mitsubishi Electric Corp
•
Filing: 1987-09-24
•
Granted: 1989-04-11
•
Expires: 2007-09-24
Abstract
Abstract A gas insulated switchgear includes an interrupter connected to at least one bus bar through a disconnector and a monitor panel and having an operating mechanism disposed at eye level (with respect to ground). The operators of respective grounded switches, which are operable to disable the switchgear to allow inspections of the bus bar disconnector and the interrupter are arranged and positioned in the vicinity, and at the same face, of the operating mechanism of the interrupter, whereby the disconnector and the grounded switches can be operated and inspected at eye level.
Inventors
- 👤 Kiyokazu Torimi
- 👤 Hiroshi Takeuchi
- 👤 Keizo Takatsuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:44
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/20; H02B1/22; H02B13/00; H02B13/02; H02B13/035; H02B5/00; H02B5/06; H01; H01H; H01H9/00; H01H9/02; H01H2009/0292
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
159 words
A gas insulated switchgear comprising: a main unit housing an interrupter; a plurality of bus bar units electrically connected to said interrupter of said main unit at a front face thereof, said bus bar units having disconnectors; a pair of grounded switches respectively electrically connected to said interrupter and operable to disable said interrupter for inspection thereof; and an operator unit having an interrupter operator connected to said interrupter, said operator unit being mounted on a base below said interrupter main unit, said operator unit having a monitor unit on a front face thereof, said bus bar units being located above said monitor unit, said monitor unit providing operators for said grounded switches and said disconnectors, said operators being positioned in the vicinity and at a same side of said interrupter main unit to allow operating maintenance and operating inspection of said operators and interrupter operator to be easily performed from the same side of said interrupter main unit.
Claim 2
Dependent Claim
159 words
A gas insulated switchgear comprising: a main unit housing an interrupter; a plurality of bus bar units electrically connected to said interrupter of said main unit at a front face thereof, said bus bar units having disconnectors; a pair of grounded switches respectively electrically connected to said interrupter and operable to disable said interrupter for inspection thereof; and an operator unit having an interrupter operator connected to said interrupter, said operator unit being mounted on a base below said interrupter main unit, said operator unit having a monitor unit on a front face thereof, said bus bar units being located above said monitor unit, said monitor unit providing operators for said grounded switches and said disconnectors, said operators being positioned in the vicinity and at a same side of said interrupter main unit to allow operating maintenance and operating inspection of said operators and interrupter operator to be easily performed from the same side of said interrupter main unit.
Claim 3
Dependent Claim
25 words
A gas insulated switchgear as claimed in claim 1 further comprising a housing containing said operators of said monitor unit and windows allowing operator inspection.
Claim 4
Dependent Claim
59 words
A gas insulated switchgear as claimed in claim 2 further including a control wiring block placed in tandem with said interrupter operator of said interrupter, said block providing electrical connections to said operators and switches, said control wiring block being disposed at a front face of said operator unit and adjacent to said monitor unit in a side-by-side relationship.
References Cited (Backward Citations)
JPS60187217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |