An insulator includes an end fitting and a connecting device disposed on the end fitting for connecting the insulator to a suspension device. The insulator also includes an additional operating device. The end fitting and the connecting device are formed in one piece. An arrangement is also provided for dissipating overvoltage using the insulator according to the invention.

An insulator includes an end fitting and a connecting device disposed on the end fitting for connecting the insulator to a suspension device. The insulator also includes an additional operating device. The end fitting and the connecting device are formed in one piece. An arrangement is also provided for dissipating overvoltage using the insulator according to the invention.

Provided in the present disclosure is a lightning induction-type solid-phase arc-extinguishing lightning protector. The lightning protector primarily including a lightning protector housing, an arc-extinguishing rotating disk, a conductive metal plate, an arc-striking rod, a fastening rod, an inductive coil, an arc-extinguishing cylinder, and a counter arm. The arc-extinguishing rotating disk is mounted within the lightning protector housing, and a planar torsion spring is provided at a center of the arc-extinguishing rotating disk for driving the arc-extinguishing rotating disk to rotate; the conductive metal plate is mounted at an upper portion of the arc-extinguishing rotating disk; several arc-extinguishing air-jet members are provided around a circumferential direction of the arc-extinguishing rotating disk, each of the arc-extinguishing air-jet members is provided with a trigger electrode and a recess on one side thereof, and the trigger electrode has one end connected to one of triggering ends of the arc-extinguishing air-jet member by means of a wire, and the other end extending beyond an edge of the arc-extinguishing rotating disk; the other triggering end of the arc-extinguishing air-jet member is connected to a metallic conductive strip by means of a wire. The present disclosure has the advantages of simple structure, reasonable design, improved arc-extinguishing performance, and stable operation, and convenience in replacement of the arc-extinguishing air-jet members.

Provided in the present disclosure is a lightning induction-type solid-phase arc-extinguishing lightning protector. The lightning protector primarily including a lightning protector housing, an arc-extinguishing rotating disk, a conductive metal plate, an arc-striking rod, a fastening rod, an inductive coil, an arc-extinguishing cylinder, and a counter arm. The arc-extinguishing rotating disk is mounted within the lightning protector housing, and a planar torsion spring is provided at a center of the arc-extinguishing rotating disk for driving the arc-extinguishing rotating disk to rotate; the conductive metal plate is mounted at an upper portion of the arc-extinguishing rotating disk; several arc-extinguishing air-jet members are provided around a circumferential direction of the arc-extinguishing rotating disk, each of the arc-extinguishing air-jet members is provided with a trigger electrode and a recess on one side thereof, and the trigger electrode has one end connected to one of triggering ends of the arc-extinguishing air-jet member by means of a wire, and the other end extending beyond an edge of the arc-extinguishing rotating disk; the other triggering end of the arc-extinguishing air-jet member is connected to a metallic conductive strip by means of a wire. The present disclosure has the advantages of simple structure, reasonable design, improved arc-extinguishing performance, and stable operation, and convenience in replacement of the arc-extinguishing air-jet members.

Provided in the present disclosure is a lightning induction-type solid-phase arc-extinguishing lightning protector. The lightning protector primarily including a lightning protector housing, an arc-extinguishing rotating disk, a conductive metal plate, an arc-striking rod, a fastening rod, an inductive coil, an arc-extinguishing cylinder, and a counter arm. The arc-extinguishing rotating disk is mounted within the lightning protector housing, and a planar torsion spring is provided at a center of the arc-extinguishing rotating disk for driving the arc-extinguishing rotating disk to rotate; the conductive metal plate is mounted at an upper portion of the arc-extinguishing rotating disk; several arc-extinguishing air-jet members are provided around a circumferential direction of the arc-extinguishing rotating disk, each of the arc-extinguishing air-jet members is provided with a trigger electrode and a recess on one side thereof, and the trigger electrode has one end connected to one of triggering ends of the arc-extinguishing air-jet member by means of a wire, and the other end extending beyond an edge of the arc-extinguishing rotating disk; the other triggering end of the arc-extinguishing air-jet member is connected to a metallic conductive strip by means of a wire. The present disclosure has the advantages of simple structure, reasonable design, improved arc-extinguishing performance, and stable operation, and convenience in replacement of the arc-extinguishing air-jet members.

Provided in the present disclosure is a lightning induction-type solid-phase arc-extinguishing lightning protector. The lightning protector primarily including a lightning protector housing, an arc-extinguishing rotating disk, a conductive metal plate, an arc-striking rod, a fastening rod, an inductive coil, an arc-extinguishing cylinder, and a counter arm. The arc-extinguishing rotating disk is mounted within the lightning protector housing, and a planar torsion spring is provided at a center of the arc-extinguishing rotating disk for driving the arc-extinguishing rotating disk to rotate; the conductive metal plate is mounted at an upper portion of the arc-extinguishing rotating disk; several arc-extinguishing air-jet members are provided around a circumferential direction of the arc-extinguishing rotating disk, each of the arc-extinguishing air-jet members is provided with a trigger electrode and a recess on one side thereof, and the trigger electrode has one end connected to one of triggering ends of the arc-extinguishing air-jet member by means of a wire, and the other end extending beyond an edge of the arc-extinguishing rotating disk; the other triggering end of the arc-extinguishing air-jet member is connected to a metallic conductive strip by means of a wire. The present disclosure has the advantages of simple structure, reasonable design, improved arc-extinguishing performance, and stable operation, and convenience in replacement of the arc-extinguishing air-jet members.

The present disclosure discloses a composite crossarm and a power transmission tower. The composite crossarm includes at least one insulator (1100) and at least one arcing device (1200) connected to the insulator (1100). Each of the at least one arcing device (1200) includes a high-voltage end arcing component (1210) and a low-voltage end arcing component (1220). The high-voltage end arcing component (1210) is connected to a high-voltage end of the insulator (1100), and the low-voltage end arcing component (1220) is connected to a low-voltage end of the insulator (1100). The at least one arcing device (1200) includes a first arcing device having an electrical clearance between the high-voltage end arcing component (1210) and the low-voltage end arcing component (1220) less than an electrical clearance between the high-voltage end and the low-voltage end of any one of the at least one insulator (1100). The composite crossarm disclosed by the present disclosure protects all insulators (1100) through the first arcing device to reduce the safety hazards.