Gas-insulated switchgear apparatus
AssigneeHitachi, Ltd.
InventorsMinoru Sakaguchi, Kazuaki Oishi, Seizo Nakano, Tuneo Kishi
Life of this patent
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Abstract
Gas-insulated switchgear apparatus wherein a device providing a first disconnect gap and a second disconnect gap is located in a sheath filled with an insulating gas and kept at ground potential. The disconnect gaps providing device comprises a first movable contact and a second movable contact which are insulatedly supported by a support device with respect to the sheath. There is provided a device for individually actuating the movable contacts which device comprises a pair of insulated actuating rods disposed adjacent and extending parallel to the insulating support device.
Claims5
Gas-insulated switchgear apparatus comprising:
- a. a sheath filled with an insulating gas and kept at ground potential;
- b. a device located in said sheath and providing a first disconnect gap and a second disconnect gap, said device comprising a first movable contact and a second movable contact adapted to open and close said first disconnect gap and said second disconnect gap respectively, a hollow conductor slidably housing said first and second movable contacts and electrically connecting said first movable contact to said second movable contact, said hollow conductor being provided with a feeder contact thereon:
- c. a feeder conductor located in said sheath and electrically connected to said hollow conductor through said feeder contact;
- d. a device insulatingly supporting said hollow conductor with respect to said sheath;
- and
- e. a device for individually actuating said first movable contact and said second movable contact, said device comprising a pair of actuating rods made of an insulating material and operatively connected through respective link mechanisms to said first movable contact and said second movable contact respectively, and a pair of actuators, each actuator operatively connected to a respective one of said pair of actuating rods for individually and independently actuating said first movable contact and said second movable contact through the medium of said pair of actuating rods respectively, said pair of actuating rods disposed adjacent and extending parallel to said insulating support device, said link mechanisms being housed in said hollow conductor, and said actuators being located outside said sheath.
In a gas-insulated switchgear apparatus comprising a sheath filled with an insulating gas and kept at ground potential and at least two movable contacts located in said sheath for providing disconnect gaps respectively, said movable contacts being actuated individually and independently from each other by respective actuators located outside said sheath to open and close said disconnect gaps respectively, wherein the improvement comprises a hollow conductor slidably housing said first and second movable contacts and electrically connecting said first movable contact to said second movable contact, said hollow conductor being provided with a feeder contact thereon, a feeder conductor located in said sheath and electrically connected to said hollow conductor through said feeder contact, a single means for insulatingly supporting said hollow conductor with respect to said sheath, and a pair of actuating rods of an insulating material extending parallel to each other and operatively connected at one end thereof through respective link mechanisms to said respective movable contacts and at the other end to said respective actuators, said pair of actuating rods being disposed adjacent and extending parallel to said supporting means, and said link mechanisms being housed in said hollow conductor, whereby the movable contacts and respective actuating rods are arranged for providing a compact construction of the gas-insulated switchgear apparatus.
Dependencies are inferred from the claim text.