5results about "Discharge by conduction/dissipation" patented technology

A live-line working, fully insulated, separable gapless surge arrester device comprises: a piercing, detachable insulated clamp, a high-voltage lead, a lightweight insulating cavity, an upper contact, an upper insulated waterproof piston ring, the arrester body, a lower insulated waterproof piston ring, an insulating sheath, a contact ring, a contact piece fixing ring, a contact piece, an elastic tension spring, a metal bracket, an insulating bracket, a disconnector connection bracket, a disconnector, a disconnector itself, and a lead wire connection terminal. It is mainly used for overvoltage protection of power distribution lines. The insulated operating rod allows for live-line installation and removal of the arrester body and disconnector, improving installation and maintenance efficiency. The disconnector temporarily isolates power frequency current and clearly indicates the fault point, reducing losses caused by power outages due to grounding short circuits. The disconnector connection bracket facilitates live-line separation and replacement of the disconnector. The device is fully insulated, improving the insulation process of the line. The piercing, detachable insulated clamp facilitates live-line installation and removal, eliminating the need to strip the insulation from the conductor, thus improving installation efficiency and line insulation.

A wind turbine blade includes a lightning protection system at least partially disposed in an inner portion of the blade. The lightning protection system includes a down conductor cable having a root and a tip, the root and tip being insulators with different electrical breakdown voltages. The lightning protection system may include: a down conductor cable portion and support members to hold the cable portion in free space near or on the ridge of the airfoil section of the blade, such that the cable portion is spaced apart from at least one conductive structural member; and / or multiple inner down conductor cables and radiating electrical connectors.

Disclosed is a method of providing an optimised lightning strike protection 20 on an object 10. The method comprises identifying, on a surface of the object 10, at least one spot 14 and one or more region / s 13, wherein the region / s has / have a lower damage avoidance priority than the at least one spot 14. The method further comprises covering the at least one spot 14 with a flash-repellent layer 22 which extends to at least one of the one or more region / s 13. Therein, the at least one region 13 is at least partially left bare of any cover, and / or at least partially covered with a further portion of the flash-repellent layer which has a lower breakdown voltage (e.g. reduced layer thickness) than the portion covering the at least one spot, and / or the at least one region 13 is at least partially provided with an electrically conductive covering. Further disclosed is an arrangement 1 comprising an object 10 and a lightning strike protection 20.

The subject of the invention is a lightning rod with a lightning protection system isolated from the protected facility, equipped with a power supply and control unit monitoring its head, which is characterized by the lightning rod head (1) consisting of a metal cylindrical housing (2) with an upper bottom (4), detachably connected to the blade (6), inside which its symmetry axis, there is an initiating system (7) entwined with the upper helical part (8) of the optical fiber (9.9'), electrically connected to this blade (6), and with the other end through the spark gap (15) electrically connected with the upper surface of the metal profile connector (17) and mechanically - inseparably with the sleeve shoulder (18) with the axial hole (29) of this connector with two through holes (27 and 28) made in it opposite the axial hole (29), in which both lower ends (8') of the spiral part (8) of the optical fiber (9, 9') are placed, and its further parts through the hole in the metal the connecting sleeve (35) and the through hole (39) of its bottom (37) and through the hole of the two-piece mast (42) and the through hole (56) of the metal tubular element (45) of this mast go out so that one end of the optical fiber (9, 9') is located opposite the LED light transmitter (57) of the power supply, control and monitoring unit (58) and the other end of this optical fiber is opposite the LED light receiver (59), while the insulated end (64) is connected to the connecting sleeve (35) of the insulated high voltage wire (65), the lower end of which is embedded in the ground (67) and connected to earthing (68) .

A member for potential equalising in a wind turbine blade between a first conducting member, such as a member comprising carbon fibres, and a second conducting member, such as a lightning conductor is provided. Furthermore, methods for manufacturing of such members for potential equalising are provided.The member for potential equalising comprises a first contact part suitable for connection to a conducting member comprising carbon fibres, a second contact part and an electrical conductor between the contact parts and the first contact part, wherein the first contact part is shaped substantially as a ribbon.