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Copper Crimp Pipe for Cable Connect​

The Copper Crimp Pipe for Cable Connect represents a specialized solution for permanent, high-conductivity connections in electrical power cables, engineered to create secure joints between copper conductors in distribution and transmission systems.

 
  • DGT

  • Mingxu

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Product Overview


Precision-manufactured from high-purity copper, this crimp pipe ensures gas-tight, low-resistance connections that maintain electrical integrity even under extreme load conditions and environmental stress. Compliant with IEC 61238-2 standards for cable accessories, it provides a reliable alternative to soldered or bolted connections in applications where mechanical strength and conductivity are equally critical. Its versatile design accommodates various conductor sizes and configurations, making it a staple component in utility, industrial, and commercial electrical installations.


Product Features


Material

Constructed from 99.9% pure copper (C12200 seamless copper tube), the crimp pipe delivers exceptional electrical conductivity of ≥95% IACS and excellent formability for uniform crimping. The high-purity copper ensures minimal contact resistance at the conductor interface while providing sufficient ductility to withstand the crimping process without cracking. This material composition also offers natural corrosion resistance, enhanced by optional tin plating for extreme environments.

Performance Characteristics

The crimp pipe accommodates conductor cross-sections ranging from 10 mm² to 400 mm² and achieves a crimped joint resistance ratio of ≤1.2 compared to the conductor itself, ensuring minimal power loss. It operates reliably within a temperature range of -40°C to 120°C and maintains integrity under short-circuit conditions up to 25 kA for 1 second. The crimped connection provides tensile strength exceeding 150 MPa, ensuring mechanical stability in dynamic installations.

Design Features

Available in both straight and reducing configurations, the pipe features precision-machined inner diameters with a slight taper at entry points to facilitate conductor insertion without strand damage. Wall thickness varies by conductor size (from 1.2 mm to 3.5 mm) to ensure proper mechanical strength while allowing sufficient deformation during crimping. Clear length markings indicate proper conductor insertion depth, ensuring consistent installation quality.


Product Applications


Underground Cable Joints

The Copper Crimp Pipe is widely used for splicing underground power cables in distribution networks, providing watertight connections that prevent moisture ingress and corrosion. Its gas-tight crimp ensures long-term reliability in direct-burial and duct installations.

Overhead Line Connections

In overhead power lines, these crimp pipes create secure joints between copper conductors and jumpers, withstanding mechanical stresses from wind-induced movement and thermal expansion/contraction cycles. Their high conductivity supports the current loads in transmission lines up to 33 kV.

Industrial Cable Repairs

Maintenance teams utilize these crimp pipes for repairing damaged power cables in industrial facilities, providing a permanent solution that restores full electrical and mechanical performance. They are particularly valuable in manufacturing environments where production downtime must be minimized.


FAQ


What crimping tools are required for installation?

Installation requires hydraulic crimping tools with hexagonal dies specifically sized for the crimp pipe diameter. The tools must provide sufficient force to achieve complete deformation of the pipe around the conductors, typically 12-20 tons depending on pipe size. Always use calibrated tools meeting ISO 6722 standards for crimping equipment.

How does the crimp pipe ensure a gas-tight connection?

The hexagonal crimping process creates a uniform deformation that eliminates voids between the pipe and conductor strands, forming a metal-to-metal seal that prevents air and moisture ingress. This gas-tight seal prevents oxidation within the connection, ensuring long-term conductivity and mechanical stability.

Can the Copper Crimp Pipe be used with aluminum conductors?

No, this product is specifically designed for copper conductors only. For aluminum conductors or copper-to-aluminum connections, use bimetallic crimp pipes engineered to prevent galvanic corrosion between dissimilar metals.

What is the recommended inspection schedule for crimped connections?

New installations should be inspected immediately after crimping to verify proper dimension and conductor alignment. In service, visual inspections are recommended every 2-3 years to check for signs of corrosion or mechanical damage. Thermographic scanning can identify high-resistance connections that may require replacement.


DGT Copper Crimp Connecting Pipe


Item No. D±0.5 d±0.3 L±2 Package
(pcs)
Gross weight
(kg)
DGT-10 6.0 4.5 30 6400 21.0
DGT-16 8.5 5.5 50 4800 23.0
DGT-25 10.0 7.0 50 3200 24.0
DGT-35 12.5 8.2 50 2400 30.5
DGT-50 14.5 10.0 56 1200 24.0
DGT-70 16.5 11.5 56 800 22.8
DGT-95 19.0 13.5 70 600 25.0
DGT-120 21.0 15.5 70 400 24.0
DGT-150 23.5 17.0 80 300 23.0
DGT-185 25.5 19.0 85 240 22.0
DGT-240 29.0 21.5 90 180 22.5


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