JXD series wedge-shaped parallel groove clamps are suitable for the non-load bearing connection or branch between overhead insulated aluminum stranded wires or steel-cored aluminum stranded wires in overhead distribution lines. The wire clamp is composed of a wedge-shaped shell and a wedge block, and special installation tools (ejection gun or manual hydraulic pliers) are required to install the wire clamp and the wire. The wedge is pressed in axially from the casing, so that a constant clamping force is formed between the wedge, the casing and the wire, so as to ensure the good connection performance of the wire clamp. 1. Good contact performance: the contact surface between the wedge clamp and the wire is large, the clamping force is constant, and the DC resistance ratio is small 2. Strong overload capacity: the cross-sectional area of the wedge is relatively large, so the overload capacity is more than twice the rated current 3. Good thermal stability: After thermal cycle test, it can always run under small DC resistance 4. Reliable connection: after the wedge clamp is installed correctly, the wedge will never fall off 5. No magnetic loss: There is no steel bolt connection on the wedge clamp, and there is no magnetic loss on the clamp 6. Strong comprehensive performance: good contact and thermal stability, strong overload capacity, maintenance-free, long service life, etc. 7. Good economy: in terms of cost performance and practicability, it is superior to bolt-type clamps