Cable Assembly Technical Specification
1.Core Design Specifications
A. Conductor Requirements
Material:
Copper (bare, tinned, or silver-plated) for high conductivity.
Aluminum for lightweight, high-voltage power transmission.
Fiber optic strands for data-centric applications.
Gauge/Size:
Defined by AWG (American Wire Gauge) standards (e.g., 24 AWG for signal cables, 4/0 AWG for power lines).
Stranding:
Stranded conductors for flexibility (e.g., 19/34 stranding for robotics).
Solid conductors for fixed installations.
B. Insulation Specifications
Material:
Material Temp Range Dielectric Strength Key Applications
PVC -40°C–105°C 10–20 kV/mm Consumer electronics
XLPE -40°C–150°C 20–30 kV/mm Solar farms, EV charging
Silicone -60°C–200°C 15–25 kV/mm Aerospace, foundries
PTFE -200°C–260°C 40–60 kV/mm Chemical plants, military
Thickness:
Compliance with IEC 60228 (e.g., 0.7 mm insulation for 600V rated cables).
C. Jacket/Sheath Properties
Material Selection:
PUR: Abrasion- and oil-resistant (IP69K rating for washdown environments).
LSZH: Low smoke, zero halogen for public infrastructure.
TPE: UV-resistant for outdoor use.
Protective Features:
Armoring (steel braid) for crush resistance.
EMI shielding (foil + braid) for signal integrity.
2. Electrical Performance Standards
Voltage Rating:
Low Voltage (≤1 kV): IEC 60227 for household wiring.
Medium/High Voltage (1 kV–500 kV): IEC 60502 for power distribution.
Current Capacity:
Based on conductor size and insulation thermal limits (e.g., 30A for 10 AWG copper at 75°C).
Impedance and Attenuation:
Critical for high-frequency data cables (e.g., 100Ω ±5Ω for USB 3.0).
3. Mechanical and Environmental Specifications
Flex Life:
≥1 million cycles for robotic cables (tested per IEC 63076).
Bend Radius:
Minimum 8x cable diameter for standard installations.
Temperature Tolerance:
Operating range: -60°C to 260°C (e.g., PTFE-insulated aerospace cables).
Ingress Protection (IP):
IP67/IP68 for waterproofing in marine or outdoor applications.
Chemical Resistance:
Compatibility with oils, acids, and solvents per ISO 6722.
4. Safety and Compliance Certifications
Flame Resistance:
UL 1685 (vertical tray flame test) for plenum-rated cables.
IEC 60332-1 for flame-retardant standards.
Environmental Compliance:
RoHS/REACH: Restrict hazardous substances (e.g., lead, phthalates).
WEEE: Recycling and disposal guidelines.
Industry-Specific Certifications:
Automotive: ISO 19642, LV214 (German automotive standards).
Aerospace: AS23053/4 for Mil-Spec connectors.
Medical: ISO 13485 for biocompatibility.
5. Testing Protocols
Electrical Testing:
Hi-Pot Testing: Verify insulation integrity at 2x rated voltage + 1 kV.
Continuity Testing: Ensure no conductor breaks.
Mechanical Testing:
Tensile Strength: ≥50 N/mm² for industrial cables.
Torsional Flexibility: ±180°/meter for dynamic applications.
Environmental Testing:
Thermal Cycling: -40°C to 150°C for 500 cycles (MIL-STD-810).
Salt Spray Testing: 720 hours for marine-grade assemblies (ASTM B117).
6. Application-Specific Specifications
A. Industrial Automation
Standards: UL 508A, ISO 13849.
Key Specs:
Drag chain-rated jackets (PUR or TPE).
M12/M8 connectors with IP67 sealing.
B. Automotive
Standards: SAE J1128, LV214.
Key Specs:
Thin-wall insulation (0.3 mm) for weight reduction.
125°C temperature rating for engine compartments.
C. Aerospace
Standards: AS6070, MIL-DTL-38999.
Key Specs:
PTFE insulation for -65°C to 200°C range.
Quadrax shielding for EMI protection.
D. Data Centers
Standards: TIA-568, ISO/IEC 11801.
Key Specs:
Cat6A/Cat7 shielded twisted pairs.
LSZH jackets for fire safety.
7. Documentation and Labeling Requirements
Markings:
Voltage rating, gauge, manufacturer, and compliance marks (UL, CE) printed on the jacket.
Traceability:
Lot numbers and date codes for quality control.
Datasheets:
Detailed specs for impedance, capacitance, and attenuation.
8. Top Industry Standards
Standard Scope Key Parameters
IEC 60228 Conductor sizing and resistance Stranding, DC resistance
UL 44 Thermoset-insulated wires Flame resistance, dielectric
MIL-DTL-17 Military coaxial cables Shielding, frequency range
EN 50575 EU CPR (Construction Products) Fire performance, smoke emission