Patent US4866569A successfully refreshed from Google Patents.
US4866569A
Expired / Lapsed
US
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Gas-insulated switchgear apparatus
Assignee: Hitachi Ltd
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Filing: 1988-10-07
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Granted: 1989-09-12
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Expires: 2008-10-07
Abstract
Abstract A gas-insulated switchgear apparatus comprising two power-receiving units with a cable head on power-receiving side, a wattage metering unit, and two lead-out units with a cable head on lead-out side. The two power-receiving units are arranged on one side of the wattage metering unit, and the two lead-out units on the other side. The gas-insulated switchgear apparatus is thus simplified, electrical connection facilitated between the units, and the floor space of the whole apparatus reduced.
Inventors
- 👤 Kiyoshi Okumura
- 👤 Kazuaki Oishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:09
CPC Classifications
H; H02; H02B; H02B13/00; H02B13/02; H02B7/00; H02B7/01
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
303 words
A gas-insulated switchgear apparatus comprising: two power-receiving units with a respective cable head on a power-receiving side; two lead-out units with a respective cable head on a lead-out side; and a wattage metering unit having a wattage metering apparatus connected to an electrical coupling part of each of said power-receiving units and each of said lead-out units, each of the units being constructed in a box-like case, wherein: the lead-out and power-receiving units are positioned centering around the wattage metering unit and each of said power-receiving units is positioned at only one side of the wattage metering unit and each of said lead-out units is positioned at only the other side of the wattage metering unit and each of said power receiving units reaches the side of said wattage metering unit and contains at least disconnectors and a circuit breaker which are electrically connected from the cable head side and mounted within hermetic chambers sealed with an insulating gas in respective ones of said box-like cases; each of said lead-out units contains a respective disconnector connected between the side of said wattage metering unit and a respective cable head, said disconnectors are within hermetic chambers sealed with an insulating gas in said box-like case; each of said units is electrically connected to each other; each of said power-receiving units includes a circuit breaker connected to a bus; said circuit breaker is arranged vertically in an air chamber on a door side of a box-like case segmented by partitions; a first disconnector is arranged in an upper hermetic chamber of said box-like case and connected to the bus side of said circuit breaker sealed with an insulating gas; and a second disconnector is arranged in a lower hermetic chamber of said box-like case and connected to the cable head side of said circuit breaker.
Claim 2
Dependent Claim
303 words
A gas-insulated switchgear apparatus comprising: two power-receiving units with a respective cable head on a power-receiving side; two lead-out units with a respective cable head on a lead-out side; and a wattage metering unit having a wattage metering apparatus connected to an electrical coupling part of each of said power-receiving units and each of said lead-out units, each of the units being constructed in a box-like case, wherein: the lead-out and power-receiving units are positioned centering around the wattage metering unit and each of said power-receiving units is positioned at only one side of the wattage metering unit and each of said lead-out units is positioned at only the other side of the wattage metering unit and each of said power receiving units reaches the side of said wattage metering unit and contains at least disconnectors and a circuit breaker which are electrically connected from the cable head side and mounted within hermetic chambers sealed with an insulating gas in respective ones of said box-like cases; each of said lead-out units contains a respective disconnector connected between the side of said wattage metering unit and a respective cable head, said disconnectors are within hermetic chambers sealed with an insulating gas in said box-like case; each of said units is electrically connected to each other; each of said power-receiving units includes a circuit breaker connected to a bus; said circuit breaker is arranged vertically in an air chamber on a door side of a box-like case segmented by partitions; a first disconnector is arranged in an upper hermetic chamber of said box-like case and connected to the bus side of said circuit breaker sealed with an insulating gas; and a second disconnector is arranged in a lower hermetic chamber of said box-like case and connected to the cable head side of said circuit breaker.
Claim 3
Dependent Claim
273 words
A gas-insulated switchgear apparatus comprising: two power-receiving units with a respective cable head on a power-receiving side; two lead-out units with a respective cable head on a lead-out side; and a wattage metering unit having a wattage metering apparatus connected to an electrical coupling part of each of said power-receiving units and each of said lead-out units, each of the units being constructed in a box-like case, wherein: the lead-our and power-receiving units are positioned centering around the wattage metering unit; said two power-receiving units formed by a first box-like case are positioned at only one side of the wattage metering unit; said two lead-out units formed by a second box-like case are positioned at only the other side of the wattage metering unit; each of said lead-out units includes a box-like case hermetically sealed with an insulating gas therein; each of said lead-out units contains a disconnector connected between the side of said wattage metering unit and a respective cable head said disconnectors all within hermetic chambers sealed with insulating gas with each chamber being located in said box-like case; each of said units is electrically connected to each other; each of said power-receiving units includes a circuit breaker arranged vertically in an air chamber on a door side of a box-like case segmented by partitions; a first disconnector is arranged in an upper hermetic chamber sealed with an insulating gas in said box-like case; and a second disconnector is arranged in a far and lower hermetic chamber of the box-like case and connected to the cable head side of the circuit breaker at a side remote from said wattage measuring unit.
Claim 4
Dependent Claim
273 words
A gas-insulated switchgear apparatus comprising: two power-receiving units with a respective cable head on a power-receiving side; two lead-out units with a respective cable head on a lead-out side; and a wattage metering unit having a wattage metering apparatus connected to an electrical coupling part of each of said power-receiving units and each of said lead-out units, each of the units being constructed in a box-like case, wherein: the lead-our and power-receiving units are positioned centering around the wattage metering unit; said two power-receiving units formed by a first box-like case are positioned at only one side of the wattage metering unit; said two lead-out units formed by a second box-like case are positioned at only the other side of the wattage metering unit; each of said lead-out units includes a box-like case hermetically sealed with an insulating gas therein; each of said lead-out units contains a disconnector connected between the side of said wattage metering unit and a respective cable head said disconnectors all within hermetic chambers sealed with insulating gas with each chamber being located in said box-like case; each of said units is electrically connected to each other; each of said power-receiving units includes a circuit breaker arranged vertically in an air chamber on a door side of a box-like case segmented by partitions; a first disconnector is arranged in an upper hermetic chamber sealed with an insulating gas in said box-like case; and a second disconnector is arranged in a far and lower hermetic chamber of the box-like case and connected to the cable head side of the circuit breaker at a side remote from said wattage measuring unit.
Claim 5
Dependent Claim
208 words
A gas-insulated switchgear apparatus comprising two power-receiving units with cable heads on a power-receiving side, a wattage metering unit, and two lead-out units with cable heads on a lead-out side, each including a box-like case, wherein said two power-receiving units are arranged on one side of said wattage metering unit, and said two lead-out units are arranged on the other side of said wattage metering unit, each of said power-receiving units including a circuit breaker arranged vertically in an air chamber on a door side of said box-like case, said box-like case being segmented by partitions, to form upper and lower hermetic chambers sealed with an insulating gas, a first disconnector arranged in said upper hermetic chamber and connected to a bus side of said circuit breaker, and a second disconnector arranged in said lower hermetic chamber and connected to a cable head of said circuit breaker, each of said lead-out units including a plurality of disconnectors arranged to have a longitudinal axis horizontally disposed in each of the hermetic chambers into which a box-like case is segmented by two partitions, an end on one side of each of said disconnectors being connected to a cable head, and ends on other sides thereof being connected to a bus.
Claim 6
Dependent Claim
208 words
A gas-insulated switchgear apparatus comprising two power-receiving units with cable heads on a power-receiving side, a wattage metering unit, and two lead-out units with cable heads on a lead-out side, each including a box-like case, wherein said two power-receiving units are arranged on one side of said wattage metering unit, and said two lead-out units are arranged on the other side of said wattage metering unit, each of said power-receiving units including a circuit breaker arranged vertically in an air chamber on a door side of said box-like case, said box-like case being segmented by partitions, to form upper and lower hermetic chambers sealed with an insulating gas, a first disconnector arranged in said upper hermetic chamber and connected to a bus side of said circuit breaker, and a second disconnector arranged in said lower hermetic chamber and connected to a cable head of said circuit breaker, each of said lead-out units including a plurality of disconnectors arranged to have a longitudinal axis horizontally disposed in each of the hermetic chambers into which a box-like case is segmented by two partitions, an end on one side of each of said disconnectors being connected to a cable head, and ends on other sides thereof being connected to a bus.
Claim 7
Dependent Claim
276 words
A gas-insulated switch gear apparatus comprising: a first box-like case including two power receiving units each having a cable head on a power receiving side and an electrical coupling part; a second box-like case including two lead-out units each having a cable head on a lead-out side and an electrical coupling part; a third box-like case including a wattage metering unit including a wattage metering apparatus connected to the electrical coupling parts of the power receiving units and of the lead-out units; said power receiving units being positioned totally on one side of the wattage metering unit and said lead-out units being positioned totally on an opposite side of the wattage metering unit; means connecting all of said units electrically together; wherein each of said lead-out units includes a single box-like case segmented into upper and lower hermetic chambers sealed with an insulating gas each having arranged therein a disconnector having two ends, the end on one side of each disconnector being connected to a cable head, the other end of each disconnector being connected to a bus disposed at an upper part of each chamber; and each of said power-receiving units includes a circuit breaker connected to said bus, said circuit breaker being arranged vertically in an air chamber on a door side of a box-like case segmented by partitions; a first disconnector is arranged in an upper hermetic chamber of said box-like case and connected to the bus side of said circuit breakers sealed with an insulating gas, and a second disconnector is arranged in a lower hermetic chamber of said box-like case and connected to the cable head side of said circuit breaker.
Claim 8
Dependent Claim
276 words
A gas-insulated switch gear apparatus comprising: a first box-like case including two power receiving units each having a cable head on a power receiving side and an electrical coupling part; a second box-like case including two lead-out units each having a cable head on a lead-out side and an electrical coupling part; a third box-like case including a wattage metering unit including a wattage metering apparatus connected to the electrical coupling parts of the power receiving units and of the lead-out units; said power receiving units being positioned totally on one side of the wattage metering unit and said lead-out units being positioned totally on an opposite side of the wattage metering unit; means connecting all of said units electrically together; wherein each of said lead-out units includes a single box-like case segmented into upper and lower hermetic chambers sealed with an insulating gas each having arranged therein a disconnector having two ends, the end on one side of each disconnector being connected to a cable head, the other end of each disconnector being connected to a bus disposed at an upper part of each chamber; and each of said power-receiving units includes a circuit breaker connected to said bus, said circuit breaker being arranged vertically in an air chamber on a door side of a box-like case segmented by partitions; a first disconnector is arranged in an upper hermetic chamber of said box-like case and connected to the bus side of said circuit breakers sealed with an insulating gas, and a second disconnector is arranged in a lower hermetic chamber of said box-like case and connected to the cable head side of said circuit breaker.
Claim 9
Dependent Claim
186 words
A gas-insulated switchgear apparatus comprising: two power-receiving units with a respective cable head on a power-receiving side; two lead-out units with a respective cable head on a lead-out side; and a wattage metering unit having a wattage metering apparatus connected to an electrical coupling part of each of said power-receiving units and each of said lead-out units, each of the units being constructed in a box-like case, wherein: the lead-out and power-receiving units are positioned centering around the wattage metering unit and said two power-receiving units comprised of a first box-like case are positioned at only one side of the wattage metering unit; said two lead-out units comprised of a second box-like case are positioned at only one side of the wattage metering unit; said two lead-out units are positioned in a single box-like case segmented by partitions into upper and lower hermetic chambers sealed with an insulating gas, and contain a disconnector connected between a side of said wattage metering unit and a respective said cable head, said disconnector is within a hermetic chamber; and each of said units is electrically connected to each other.
Claim 10
Dependent Claim
186 words
A gas-insulated switchgear apparatus comprising: two power-receiving units with a respective cable head on a power-receiving side; two lead-out units with a respective cable head on a lead-out side; and a wattage metering unit having a wattage metering apparatus connected to an electrical coupling part of each of said power-receiving units and each of said lead-out units, each of the units being constructed in a box-like case, wherein: the lead-out and power-receiving units are positioned centering around the wattage metering unit and said two power-receiving units comprised of a first box-like case are positioned at only one side of the wattage metering unit; said two lead-out units comprised of a second box-like case are positioned at only one side of the wattage metering unit; said two lead-out units are positioned in a single box-like case segmented by partitions into upper and lower hermetic chambers sealed with an insulating gas, and contain a disconnector connected between a side of said wattage metering unit and a respective said cable head, said disconnector is within a hermetic chamber; and each of said units is electrically connected to each other.
Claim 11
Dependent Claim
65 words
A gas-insulated switchgear apparatus according to claim 5, wherein said box-like case for the lead-out units is segmented by two partitions into hermetic chambers sealed with an insulating gas, each having therein a disconnector having two ends with one of said ends on one side thereof connected to a cable head, the end on another side thereof connected to a bus at an upper part.
Claim 12
Dependent Claim
91 words
A gas-insulated switchgear apparatus according to claim 5, wherein each of said power-receiving units includes a single box-like case segmented by partitions into an air chamber on a door side of said box-like case and having a circuit breaker vertically arranged therein, an upper hermetic chamber sealed with an insulating gas and having arranged therein a disconnector connected to a bus side of said circuit breaker, and a lower hermetic chamber sealed with an insulating gas and having arranged therein a disconnector connected to a cable head of said circuit breaker.
Claim 13
Dependent Claim
192 words
A gas-insulated switchgear apparatus comprising: two power-receiving units with a respective cable head on a power-receiving side; two lead-out units with a respective cable head on a lead-out side; and a wattage metering unit having a wattage metering apparatus connected to an electrical coupling part of each of said power-receiving units and each of said lead-out units, each of the units being constructed in a box-like case, wherein: the lead-out and power-receiving units are positioned centering around the wattage metering unit; said two power-receiving units respectively comprised of a box-like case are positioned at only one side of the wattage metering unit; said two lead-out units comprised of a box-like case are positioned at the other side of the wattage metering unit; said lead-out units are formed by segmenting a single box-like case by two substantially parallel partitions into hermetic chambers with different lengths each sealed with an insulating gas; a disconnector connected between a side of said wattage metering unit and a respective said cable head in each hermetic chamber and arranged so that each cable head is substantially parallel; and each of said units is electrically connected to each other.
Claim 14
Dependent Claim
192 words
A gas-insulated switchgear apparatus comprising: two power-receiving units with a respective cable head on a power-receiving side; two lead-out units with a respective cable head on a lead-out side; and a wattage metering unit having a wattage metering apparatus connected to an electrical coupling part of each of said power-receiving units and each of said lead-out units, each of the units being constructed in a box-like case, wherein: the lead-out and power-receiving units are positioned centering around the wattage metering unit; said two power-receiving units respectively comprised of a box-like case are positioned at only one side of the wattage metering unit; said two lead-out units comprised of a box-like case are positioned at the other side of the wattage metering unit; said lead-out units are formed by segmenting a single box-like case by two substantially parallel partitions into hermetic chambers with different lengths each sealed with an insulating gas; a disconnector connected between a side of said wattage metering unit and a respective said cable head in each hermetic chamber and arranged so that each cable head is substantially parallel; and each of said units is electrically connected to each other.
Claim 15
Dependent Claim
54 words
A gas-insulated switchgear apparatus according to claim 8, wherein said hermetic chambers each have arranged therein a disconnector that is horizontally disposed and having two ends on different sides, the end on one side of said disconnector being connected to a cable head, the end on another side thereof being connected to a bus.
Claim 16
Dependent Claim
93 words
A gas-insulated switchgear apparatus according to claim 8, wherein each of said power-receiving units includes a circuit breaker vertically arranged in an air chamber on a door side of a box-like case segmented by partitions, a first disconnector arranged in an upper hermetic chamber of said box-like case sealed with an insulating gas and connected to a bus side of said circuit breaker, and a second disconnector arranged in a lower hermetic chamber of said box-like case sealed with an insulating gas and connected to a cable head side of said circuit breaker.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |