CAN Wire Sheathing Touch Pole: Technical Specifications and Applications

Technical Characteristics

The CAN Wire Sheathing Touch Pole typically consists of multiple layers with precise specifications:

• Outer Jacket Material: Cross-linked polyethylene (XLPE) or polyvinyl chloride (PVC) with a thickness of 0.8-1.2mm, providing abrasion resistance of ≥500 cycles (ASTM D3389) and UV stability for outdoor applications

• Shielding: Aluminum-polyester foil (100% coverage) with tinned copper braid (85% coverage) offering ≥65dB attenuation at 100MHz (IEC 61196-1)

• Dielectric Strength: Withstands 1500V AC for 1 minute (ISO 6722) with insulation resistance >5000MΩ/km at 20°C

• Temperature Range: Operational from -40°C to +105°C (SAE J1128), with short-term peaks to +125°C

• Mechanical Properties: Tensile strength ≥12N/mm² (DIN EN 60811) with elongation at break >150%

• Flame Resistance: Meets UL 1685 vertical tray flame test with flame spread <1.5m and self-extinguishing within 60 seconds

• Chemical Resistance: Resistant to oils (IRM 903), acids (pH 2-12), and alkalis per ISO 6722 standards

Key Performance Metrics

The sheathing demonstrates critical performance characteristics when in contact with poles:

• Capacitance: Maintains <85pF/m between conductors to prevent signal degradation

• Impedance: Consistent 120Ω ±10% across the frequency spectrum (1-40MHz)

• Propagation Delay: <5ns/m to ensure proper CAN bus timing requirements

• Abrasion Resistance: Withstands >5000 cycles against steel poles (DIN EN 50396)

• Cold Bend Performance: No cracking at -40°C when wrapped around a pole with 4x cable diameter

Application Scenarios

The CAN Wire Sheathing Touch Pole finds extensive use in various industrial and transportation settings:

• Automotive Manufacturing: In robotic assembly lines where CAN cables run along steel support poles with bend radii ≥8x cable diameter

• Public Transportation: For bus and tram overhead wiring systems exposed to weather and mechanical stress

• Industrial Automation: In factory environments where cables are routed along metal conduits with potential EMI interference

• Marine Applications: On shipboard systems requiring saltwater resistance (ISO 6722 Class C)

• Agricultural Machinery: For equipment exposed to fertilizers and organic acids while maintaining signal integrity

• Railway Signaling: In trackside installations requiring fire performance to EN 45545-2 HL3 standards

• Energy Sector: For wind turbine control systems where cables contact tower structures under vibration

Installation Best Practices

Proper installation ensures optimal performance of CAN wiring in pole-contact applications:

• Maintain minimum bend radius of 10x cable diameter when routing around poles

• Use UV-resistant cable ties (UL 62275) with tension ≤4.5N to prevent jacket deformation

• Implement strain relief within 150mm of pole contact points per IEC 61984

• For vertical runs exceeding 3m, install support clamps every 1.5m (DIN EN 50368)

• In high-vibration environments, use anti-abrasion sleeves with hardness ≥80 Shore A

• Ensure proper grounding of shield at one end only (typically <1Ω resistance to ground)

Maintenance Procedures

Regular maintenance preserves the integrity of CAN wire sheathing in contact with poles:

• Quarterly Inspection: Check for jacket abrasion using micrometer measurements (≥10% thickness reduction indicates replacement)

• Annual Testing: Perform insulation resistance tests at 500V DC (minimum 100MΩ per km)

• Cleaning: Use pH-neutral cleaners (pH 6-8) for removing contaminants without damaging sheathing

• Shield Integrity: Verify shield continuity with <1Ω resistance end-to-end

• UV Protection: Reapply UV-resistant coatings (per MIL-DTL-641) every 2 years for outdoor exposure

• Connector Maintenance: Clean contacts with electronic-grade isopropyl alcohol (≥99% purity)

• Environmental Sealing: Inspect and replace pole-gasket seals (EPDM or silicone) showing >15% compression set

Failure Mode Analysis

Understanding common failure mechanisms helps prevent system downtime:

• Abrasion Wear: Typically occurs at contact points with pole edges >60° - mitigate with radius guides

• Electrochemical Migration: Can occur between dissimilar metals (e.g., aluminum shield to steel pole) - use dielectric barriers

• Cold Flow: Permanent deformation under continuous pressure >50kPa - address with distributed load clamps

• UV Degradation: Surface cracking appears after ~5 years outdoor exposure - indicated by ΔE >3 in color measurement

• Shield Corrosion: Moisture ingress reduces shielding effectiveness below 40dB at 100MHz