
Company Information
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A sewer inspection robot cable is far more than a simple wire. It serves as the lifeline and central nervous system of the robotic crawler, simultaneously performing the critical functions of power transmission, signal control, data communication, and mechanical traction. Operating in the most demanding environments, its reliability is paramount to the success of any pipeline inspection mission.
2) Key Features & Technical Advantages
| Abrasion Resistance | Outer sheath made of abrasion-resistant polyurethane (PUR) or synthetic rubber compound. | |
| Tensile Strength & Crush Resistance | Integrated Kevlar®/Aramid Yarn braided reinforcement layer. | |
| Water & Chemical Resistance | IP68-rated waterproof integrity. Fully sealed sheath resistant to oils, sewage, acids, alkalis, and other chemicals. | |
| Flexibility & Anti-Torsion | Fine-stranded, oxygen-free copper conductors. Specialized stranding design for high flexibility. | |
| EMI/RFI Shielding | Dual-layer shielding (aluminum foil + high-density tinned copper braid) with >85% coverage. | |
| Temperature Resistance | Wide operating temperature range (e.g., -40°C to +80°C). |
3) Typical Construction
A high-quality sewer cable features a robust, multi-layer construction:
Conductors: Multi-stranded, fine-grade bare copper for optimal flexibility and conductivity.
Insulation: High-quality TPE or PVC to individually insulate each conductor.
Filling: Filler threads to maintain a round cable core and enhance flexibility.
Shielding: Combination of aluminum foil and tinned copper braiding for superior EMI protection.
Strength Member: A central or braided layer of Kevlar® aramid fiber, providing exceptional tensile strength.
Outer Sheath: Bright **orange or yellow abrasion-resistant PUR, offering ultimate protection and high visibility for retrieval.
4) Common Specifications & selection Guide
| Conductor Count | 4, 6, 8, 12 cores or more | Based on functions: Power (2 cores) + Video (2 coax) + Control (2 cores) + Spares. |
| Shielding | Single Shield, Dual Shield | Dual shielding (Foiled+Braid) is essential in electrically noisy environments near power lines or industrial sites. |
| Jacket Material | PUR (Polyurethane) | Premium choice. Best overall resistance to abrasion, oil, chemicals, and hydrolysis. |
| TPE/PVC | Cost-effective for light-duty, short-distance applications in drier conditions. | |
| Rubber | Excellent temperature resistance, but heavier and less flexible. | |
| Tensile Element | With Kevlar® | Highly recommended. Non-negotiable for heavy robots and long-distance inspections. |
| Without | Suitable only for very lightweight, short-range systems. | |
| IP Rating | IP68 | Mandatory. Ensures functionality during permanent submersion in water under pressure. |
5) Application Scenarios
CCTV Pipeline Inspection: Municipal sewer and stormwater lines, culverts.
Industrial Pipeline Inspection: Chemical discharge lines, utility tunnels.
Pipeline Rehabilitation: Providing power and control for cleaning, grinding, and epoxy-spraying tools.