What regulations should be met when pre-twisted wire winding treatment?

Binding repair damage wire

Wires and lightning conductors are subjected to mechanical forces of various forces during operation and thermal effects of load current, short-circuit current, and lightning current, as well as galvanic corrosion and chemical corrosion external force damage, which may cause damage to the wires. Common wire and lightning line defects include broken strands, loose strands, joint heat, arc burn, rust, corrosion, burrs, and broken wires.we are preformed dead end grip for sale.

With defects, to be processed, the following processing methods are generally used.

1, polishing edges, burrs

During the construction line or transportation process, the corners and burrs caused by the lightning strike of the wire and the hard object collide or drag, the cross-sectional area of the steel core aluminum stranded wire, the steel core aluminum alloy stranded wire or the lightning protection wire is the cross-sectional area of the conductive part. For 5% or less, and the strength loss is less than 4%, it can be repaired. Use No. 0 sandpaper to wipe the flattened direction along the stranding direction of the strands, and clean it with sand cloth.

2, winding reinforcement method

When the wire is damaged at the same section beyond the light-repairing standard and the damage cross-sectional area is 7% or less of the cross-sectional area of the conductive part, the single-strand wire of the same metal should be used (the wire diameter should not be less than 2 mm, for the steel core aluminum stranded wire) The galvanized iron wire is wound in the damaged part, and the winding center should be located at the most serious damage. The winding should be tight, and the damaged part should be covered completely. The length should be no less than 100mm, and the damaged part should exceed 30mm.

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