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US 2007/0175866 A1Published application
Vacuum insulated switchgear
AssigneeHitachi, Ltd.
InventorsKenji Tsuchiya, Shuichi Kikukawa
Life of this patent
Estimating the term…
Abstract
A vacuum insulated switchgear comprising a case having a switch section, a bus-bar section and a cable section, each being partitioned by an earthed metal plate, a vacuum double break three point switch disposed in the switch section and having breaking and disconnecting function, an operator, a bus-bar disposed in the bus-bar section of the case, and a cable connection terminal connected to a cable in the cable section.
Claims10
A vacuum insulated switchgear comprising:
- a metal case having a switch section, a bus-bar section and a cable section, each being portioned by an earthed metal plate;
- a vacuum double break switch having breaking and disconnecting function, which switch is disposed in the switch section of the case;
- an operator for opening and closing the vacuum double break switch;
- a bus-bar disposed in the bus-bar section;
- and
- a terminal introduced into the cable section, which is located at the rear end of the case to be connected to the cable in the cable section, one end of which is connected to the switch and the other end is connected to the cable in the cable section, wherein the cable is connected with the terminal so as to be withdrawn upwardly or downwardly without changing the position of the switch.
3 more elements
A vacuum insulated switchgear comprising:
- a metal case having a switch section, a bus-bar section and a cable section, each being portioned by an earthed metal plate;
- a vacuum double break switch having breaking and disconnecting function, which switch is disposed in the switch section of the case;
- an operator for opening and closing the vacuum double break switch;
- a bus-bar disposed in the bus-bar section;
- and
- a terminal introduced into the cable section, one end of which is connected to the switch and the other end is connected to the cable in the cable section, the cable being located at the rear end of the case to be connected to the cable in the cable section, and a transformer for measuring, connected to the terminal in the cable section by means of a fuse wherein the transformer is disposed below the bus-bar section of the case.
3 more elements
A vacuum insulated switchgear comprising:
- a case having a switch section, a bus-bar section partitioned from the switch section by an earthed metal plate and a cable section;
- a vacuum double break switch disposed in the switch section of the case, having breaking and disconnecting function;
- an operator for operating the switch;
- a bus-bar disposed in the bus-bar section;
- a terminal one end of which is connected to the switch and the other end is introduced into a position located in a rear end of the case and connected to the cable in the cable section;
- and
- a low voltage control section disposed below a front end of the case.
4 more elements
A vacuum insulated switchgear comprising:
- a case having a bus-bar section located in the center of the case, a switch section located above the bus-bar section, a cable section located at a rear end of the case, and a vacuum double break switch section having a low voltage control section, located below a front end of the case;
- a switch of a double break switch of three position type, disposed in the switch section, having a breaking and disconnecting function;
- an electromagnetic driving operator for operating the switch;
- a vacuum insulated earthing switch disposed in the switch section, which is connected to one end of the fixed contacts of the vacuum insulated double break switch of three position type;
- an electromagnetic operator for driving the vacuum insulated earthing switch;
- a terminal for connecting the cable introduced into the cable section located at the rear end of the case by means of a current transformer for a network protection and connected to the other fixed contact of the vacuum double break switch of three position type;
- a T-form cable head disposed to the terminal and selectively connected to the cable in the cable section introduced upwardly or downwardly from the case;
- and
- a condenser for the electromagnetic driving operator disposed in the low voltage control section of the case.
6 more elements
Dependencies are inferred from the claim text.