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US 6,717,790 B1Granted
Creeping discharge lightning protection device
AssigneeKyushu Electric Power Co., Inc.
InventorYasunari Morooka
Life of this patent
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AssigneeKyushu Electric Power Co., Inc.
InventorYasunari Morooka
Estimating the term…
A lightening countermeasure for overhead power lines guards against breaking of wire and momentary service interruption without using any ZnO device. A lightening arrester body for an overhead power line includes a double-folded insulated wire which is insulated to a same extent as that of a power cable. A conductor-exposed side of the lightening arrester body is connected to an insulator-earthing side, and an insulating cover side is disposed on a discharge electrode side provided to an overhead power line. A needle electrode of the discharge electrode penetrates the insulating cover of the overhead power line. Where the overhead power line is bare wire, the conductor-exposed side of the arrester body is connected to the insulator-earthing side, and the insulator cover side is connected to the overhead power line.
In an overhead power line formed of an insulating wire, a creeping discharge lightning protection device comprising a lightning protection device body formed of an insulated wire insulated to a same extent as a power cable and folded into two, said lightning protection device body including an exposed conductor portion and insulating sheath portion, a one of said exposed conductor portion and said insulating sheath portion being connected to an earth portion of an insulator, and another one of said exposed conductor portion and said insulating sheath portion being connected to a discharge electrode provided at said overhead power line, said discharge electrode including a needle electrode which penetrates an insulating sheath of said overhead power line.
In an overhead power line formed of a bare wire, a creeping discharge lightning protection device comprising a lightning protection device body formed of an insulated wire insulated to a same extent as a power cable and folded into two such that length portions thereof formed thereby overlay one another in close proximity, said lightning protection device body including an exposed conductor portion and insulating sheath portion, a one of said exposed conductor portion and said insulating sheath portion being connected to an earth portion of an insulator, and another one of said exposed conductor portion and said insulating sheath portion being connected to said overhead power line.
A creeping discharge lightning protection device, comprising:
A creeping discharge lightning protection device comprising:
In an overhead power line formed of a bare wire, a creeping discharge lightning protection device comprising:
In an overhead power line formed of a bare wire, a creeping discharge lightning protection device comprising:
Dependencies are inferred from the claim text.