There Are Many Types Of Electrical Fittings, Each With Different Uses
Power transmission line fittings can be divided into: wire clamps, connection fittings, splicing fittings, protective fittings, and wire pulling fittings according to their main performance and uses.
1. Wire clamps:
Suspension wire clamps: used to fix the conductor on the suspension insulator string of the linear tower, or to hang the overhead ground wire on the overhead ground wire bracket of the linear tower.
Strain wire clamps: used to fix the conductor or overhead ground wire on the tension insulator string to anchor it. There are three types of tension wire clamps, namely: bolt-type tension wire clamps; compression-type tension wire clamps; wedge-type wire clamps.
Bolt-type tension wire clamps: use the friction effect generated by the vertical pressure of the U-shaped screw and the wavy wire groove of the wire clamp to fix the wire.
Compression-type tension wire clamps: It is composed of aluminum tubes and steel anchors. The steel anchor is used to connect and anchor the steel core of the steel core aluminum stranded wire, and then put on the aluminum tube body, so that the metal is plastically deformed by pressure, so that the wire clamp and the wire are combined into a whole. When hydraulic pressure is used, the steel mold of the corresponding specification is used to compress it with a hydraulic press. When explosive pressure is used, the wire clamp and the wire (overhead ground wire) can be pressed into a whole by one or two explosive pressures.
Wedge-type wire clamp: used to install steel strands, tighten the overhead ground wire and the wire of the wire tower. It uses the splitting force of the wedge to lock the steel strand in the wire clamp.
2. Connecting hardware: Connecting hardware is used to connect the insulator string to the tower, the wire clamp to the insulator string, and the overhead ground wire clamp to the tower.
Commonly used connecting hardware includes: ball head hanging ring, bowl head hanging plate, U-shaped hanging ring, right angle hanging plate, etc.
3. Changeover load isolationg switch: used for the connection of conductors and overhead ground wires, and the connection of jumpers on tension towers.
The standard connection hardware includes: clamp connection hardware, hydraulic connection hardware, bolt connection hardware, and explosion pressure connection hardware.
4. Protective hardware: anti-vibration hammers, protective wires, and damping wires used to protect conductors and overhead ground wires; spacers used to suppress secondary span vibrations; shielding rings and equalizing rings used to protect insulator strings from corona.
5. Wire tie hardware: hardware used to adjust and stabilize the tower tie wires includes: adjustable UT-type wire clamps; steel wire clips, and double wire tie plates, etc.
