Pre twisted power fittings


导地线用预绞式悬垂线夹 Preformed suspension clamp for conductor

功能用途/ Function and Purpose

The clamp is used on supports to suspend conductor.

产品特点/ Product characteristic

²  Double suspension clamp can be used for long distance transmission lines across rivers and supports with big tuning angles ( that is 30°-60°).

²  Good resistance to vibration performance.

²  The clamp has a slip load of more than 20%RTS of cable. It protects the safe operation of cable in the unbalanced loads condition for a period time.

²  The materials of rod selected good quality aluminum alloy wire are against corrosion and improve the mechanical properties.

²  The end of the armor rod is processed with spherical surface treatment to increases corona inception voltage.

²  Conductor is finely protected because stress is equally distributed in large touching area without intensive stress pivot and stiffness is strengthened at the fixing point.

²  The revolving directions of the clamp shall be kept consistent. Generally, the standard dead-end clamp adopts right rotation. Please order in advance if you require left rotation.

使用须知/  Consideration

²  Select suitable suspension clamp according to the conductor specification.

²  The clamp can be used only once.

²  This product can be only operated by trained and skilled worker.

²  Be careful during working on live line or accessories to prevent electric shock.



The model of pre-stranded strain clamp is used for anchoring, and it can also be used to fix the cable of the tower. The high-voltage tension wire clip is a double-layer stranded wire structure. The tension internal stranded wire is made of galvanized steel wire or aluminum clad steel wire. The pre-stranded wire is coated with a layer of fine diamond to reduce friction. The pre-twisted power fittings are prefabricated into four sub-bundles in the factory to avoid installation errors and facilitate rapid installation. The end of the preformed wire is bent radially outward to avoid crushing and damaging the cable.

The tension wire is galvanized steel wire or aluminum clad steel wire. Under the condition of reducing the side pressure of optical cable, a layer of hard emery is pasted on the inner wall to improve the grip force of strain clamp. In the early 1950s, the United States began to adopt the pre-stranded wire technology, and achieved great success. At present, the product has been widely used in transmission and distribution lines, optical cable lines and other communication lines, especially high voltage, ultra high voltage lines.

For decades, its unique performance advantages. In the installation of ADSS cable line, the connection between ADSS cable and the tower adopts the pre-crossing tension clamp. The pre - stranded cable can protect and improve the anti - vibration performance of ADSS cable.

1) the special design and customization of the pre-twisted power fittings can ensure that the tensile clamp itself is not easy to cause damage to the ADSS cable stress concentration, so as to ensure the normal service life of the optical cable system.

2) conduct research and development and production according to the wire model and diameter.

3) under special circumstances, the invention and production may be studied according to the technical requirements. Tension clamps are used for corners, connections and terminal connections.

The spiral aluminum-clad steel wire has strong tensile strength and no concentrated stress, which plays a protective and auxiliary role in vibration reduction of the cable. The tension clip is used to fix the conductor or lightning rod to the tension insulator string of the nonlinear tower. It is used for anchoring and also for fixing the tension line of the cable tower. Depending on the structure and installation conditions, tension clips can be roughly divided into two types. Level 1: the tension clamp should be able to bear all the tension of the wire or lightning rod.