Gas-insulated switchgear

Patent metadata

Field	Value
Publication number	US-12095239-B2
Application number	US-202017904959-A
Country	US
Kind code	B2
Filing date	Apr 17, 2020
Priority date	Apr 17, 2020
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

The present disclosure makes it possible to reduce intervals between device units placed in a gas-insulated switchgear, thus achieving size reduction of the gas-insulated switchgear. A gas-insulated switchgear includes: a device housing having an operation door; a sealed container placed inside the device housing; and a circuit breaker unit and a ground switch unit attached to a side surface of the sealed container opposed to the operation door, via flange portions. A distance from the operation door to the side surface of the sealed container opposed to the operation door is different between a part where the circuit breaker unit is attached and a part where the ground switch unit is attached, so as to avoid interference between the circuit breaker unit and the ground switch unit.

First claim

The invention claimed is:

1. A gas-insulated switchgear comprising:
a device housing having an operation door;
a sealed container placed inside the device housing, the sealed container having a stepped side surface facing the operation door;
a circuit breaker unit attached, via a first flange portion, to a first step of the stepped side surface of the sealed container so as to be opposed to the operation door; and
a ground switch unit attached, via a second flange portion, to a second step of the stepped side surface of the sealed container so as to be opposed to the operation door, wherein
the first and second flange portions are attached to the sealed container such that a distance from the first flange portion to the operation door and a distance from the second flange portion to the operation door are different from each other.

2. The gas-insulated switchgear according to claim 1 , wherein
the distance from the second flange portion to the operation door is longer than the distance from the first flange portion to the operation door.

3. The gas-insulated switchgear according to claim 2 , wherein
the circuit breaker unit and the ground switch unit are attached at upper and lower positions to the sealed container so as to avoid contact between a protrusion of an operation mechanism of either the circuit breaker unit or the ground switch unit and an operation mechanism of another one of the circuit breaker unit or the ground switch unit.

4. The gas-insulated switchgear according to claim 2 , wherein
the circuit breaker unit and the ground switch unit are attached at upper and lower positions to the sealed container so as to avoid contact between a protrusion of an operation mechanism of either the circuit breaker unit or the ground switch unit and a circuit board placed on an operation mechanism of another one of the circuit breaker unit or the ground switch unit.

5. The gas-insulated switchgear according to claim 2 , wherein
the circuit breaker unit and the ground switch unit are attached at upper and lower positions to the sealed container so as to avoid contact between a protrusion of a main circuit part of either the circuit breaker unit or the ground switch unit and a main circuit part of another one of the circuit breaker unit or the ground switch unit.

6. The gas-insulated switchgear according to claim 1 , wherein
the distance from the first flange portion to the operation door is longer than the distance from the second flange portion to the operation door.

7. The gas-insulated switchgear according to claim 6 , wherein
the circuit breaker unit and the ground switch unit are attached at upper and lower positions to the sealed container so as to avoid contact between a protrusion of an operation mechanism of either the circuit breaker unit or the ground switch unit and an operation mechanism of another one of the circuit breaker unit or the ground switch unit.

8. The gas-insulated switchgear according to claim 6 , wherein
the circuit breaker unit and the ground switch unit are attached at upper and lower positions to the sealed container so as to avoid contact between a protrusion of an operation mechanism of either the circuit breaker unit or the ground switch unit and a circuit board placed on an operation mechanism of another one of the circuit breaker unit or the ground switch unit.

9. The gas-insulated switchgear according to claim 6 , wherein
the circuit breaker unit and the ground switch unit are attached at upper and lower positions to the sealed container so as to avoid contact between a protrusion of a main circuit part of either the circuit breaker unit or the ground switch unit and a main circuit part of another one of the circuit breaker unit or the ground switch unit.

10. The gas-insulated switchgear according to claim 1 , wherein
the circuit breaker unit and the ground switch unit are attached at upper and lower positions to the sealed container so as to avoid contact between a protrusion of an operation mechanism of either the circuit breaker unit or the ground switch unit and an operation mechanism of another one of the circuit breaker unit or the ground switch unit.

11. The gas-insulated switchgear according to claim 1 , wherein
the circuit breaker unit and the ground switch unit are attached at upper and lower positions to the sealed container so as to avoid contact between a protrusion of an operation mechanism of either the circuit breaker unit or the ground switch unit and a circuit board placed on an operation mechanism of another one of the circuit breaker unit or the ground switch unit.

12. The gas-insulated switchgear according to claim 1 , wherein
the circuit breaker unit and the ground switch unit are attached at upper and lower positions to the sealed container so as to avoid contact between a protrusion of a main circuit part of either the circuit breaker unit or the ground switch unit and a main circuit part of another one of the circuit breaker unit or the ground switch unit.

13. A gas-insulated switchgear comprising:
a device housing having an operation door;
a sealed container placed inside the device housing; and
a circuit breaker unit and a ground switch unit attached, via first and second flange portions, respectively, to the sealed container so as to be opposed to the operation door, wherein
the first and second flange portions are attached to the sealed container such that a distance from the first flange portion to the operation door and a distance from the second flange portion to the operation door are different from each other, wherein
the circuit breaker unit and the ground switch unit are attached at upper and lower positions to the sealed container so as to avoid contact between a protrusion of an operation mechanism of either the circuit breaker unit or the ground switch unit and a circuit board placed on an operation mechanism of another one of the circuit breaker unit or the ground switch unit.

Assignees

• Mitsubishi Electric Corp

Inventors

• Inoue Naoaki
• Mori Takahiro

Classifications

• H02B13/075

  Earthing arrangements · CPC title

• H02B13/045

  Details of casing, e.g. gas tightness · CPC title

• H02B1/22

  Layouts for duplicate bus-bar selection · CPC title

• H02B13/0352 Primary

  for three phase switchgear · CPC title