C-type clamp performance and structural characteristics

C-type clamps are mainly used for T-connection or jumper on 20kV overhead insulated conductors, aluminum stranded conductors, steel-cored aluminum stranded conductors, steel stranded conductors and copper conductors in the overhead distribution line. The clamp is made of high-strength special aluminum alloy with good electrical conductivity. The structure is composed of reasonable C-shaped and hinged wedges. When the hinged wedge is under external force, the wire is pressed between the clamp housing and the wedge. . When the wire is inflated and contracted, the C-type structure has the flexibility to maintain a constant constant contact pressure between the wire clamp and the wire. It changes with the external environment and load conditions, and the contact pressure does not change, meeting the best requirements for the connection.

Structural features:

1. Contact performance: the contact angle between the clamp and the wire is large, the clamping force is constant, and the DC resistance ratio is between 0.85 and 0.9;

2. Overload capability: the overload capability reaches 2 times of the approved current;

3. Firm performance: high-strength material, stainless steel bolts, reliable connection, never fall off;

4. Thermal cycle performance: good thermal cycle performance, always running below DC resistance ratio 1;

5. Installation: easy to install and disassemble, suitable for working at heights;

6. Energy-saving performance, the material is made of high-strength special aluminum alloy, no electromagnetic loss, anti-corrosion and anti-oxidation.

Insulation cover features:

1. Power frequency withstand voltage: ≥ 30kV for 1 minute without breakdown;

2. Insulation resistance: ≥1.0×1014Ω;

3. Ambient temperature: -30 ° C ~ 90 ° C;

4. Weather resistance: After 1008 hours of artificial weathering test, the performance is good;

5. Tensile strength: ≥ 20Mpa.