NELJ Overhead Insulator Conductor Tension Clamp for 20kV Cable
Description:
NELJ series large grip wedge type insulation tensile clamp is a product developed by our company according to the development requirements of the power market. It is suitable for the solidification and tensioning of overhead insulated wires with rated voltage of 20KV and below. It can also be used for steel core aluminum strand insulated aerial cable. Or copper core insulated wire.
This series of products has the advantages of convenient installation (no need to strip the wire insulation layer), no damage to the wire, low line loss, remarkable energy saving effect, self-locking, maintenance-free, high mechanical strength and so on.
And through the inspection of the National Power Industry Power Line Equipment Quality Inspection and Testing Center, the grip strength of the wire has reached 90% of the wire breaking force, which is much higher than the 65% of the national standard of 10KV similar products, and has been considered. The creep factor of the wire insulation.
Features:
Applying the wedge self-tightening principle, when the two opposite inner wedges in the casing are pulled by the wire to produce slippage, the gripping force of the wire can be increased inwardly, and the grip force is proportional to the tensile force of the wire and persists. It effectively avoids the occurrence of wire slippage and has the advantage of being free of inspection.
The outer shape of the clamp is two corresponding groove-shaped structures, which can form a wedge-shaped shell with high strength after fitting. When the inner wedge is inserted, it can be prevented from separating and has a self-locking function; the shell is made of high strength and resistance. Oxidized aluminum alloy die-casting, without tape, eddy current, has the advantage of energy saving.
The inner wedge is made of weather-resistant insulation-reinforced engineering plastics, and adopts a snap-in structure, which has strong integrity and convenient installation.
The pull plate is fixed by the horizontal screw and can rotate 360 degrees, which greatly facilitates the installation, storage and transportation; and the safety bolt prevents the screw from loosening.
Due to the large grip strength of the product, the distance of the pole can be increased during design, which greatly reduces the cost, reduces the floor space, and beautifies the environment.
Type |
Application of 20kV Wire Nominal Cutting |
Internal Wedge Clamp Range |
Grip Strengtd |
Nominal Failure Load |
NELJ20-70 |
70 |
Φ13.8~16.5 |
≥8.9 |
14.5 |
NELJ20-95 |
95 |
Φ18.0~20.2 |
≥8.9 |
|
NELJ20-120 |
120 |
Φ20.0~21.6 |
≥13.7 |
22.5 |
NELJ20-150 |
150 |
Φ23.2~25.0 |
≥13.7 |
|
NELJ20-185 |
185 |
Φ25.6~28.2 |
≥22.5 |
36.5 |
NELJ20-240 |
240 |
Φ29.6~31.8 |
≥22.5 |
|
The actual grip strength of this product is much higher than the standard requirements. |