New Energy EV Wiring 70mm²

70 mm²High-Voltage Automotive Cable for New Energy Vehicles

Product Overview

The 70 mm²high-voltage cable is engineered for ultra-high-power applications within the electrical systems of battery electric vehicles(BEVs)and plug-in hybrid electric vehicles(PHEVs).As a critical component for primary power distribution,this cable is designed to deliver maximum current with minimal power loss while maintaining stringent safety,durability,and electromagnetic compatibility standards.It serves as the backbone for the vehicle's high-voltage architecture,connecting the most power-intensive components.

Technical Specifications

Conductor Size:70 mm²

Conductor Type:Ultra-fine stranded,high-purity copper(Class 6 flexibility),often tinned for superior oxidation and corrosion resistance

Voltage Rating:600V/1000V AC/DC

Temperature Range:-40°C to+125°C(with short-term peak ratings up to 150°C)

Current Capacity:400-480A continuous(dependent on installation environment,bundling,and cooling conditions)

Insulation:Premium-grade,cross-linked polyolefin(XLPO)or silicone-based material for exceptional thermal endurance and dielectric stability

Shielding:High-performance,dual-layer shielding typically consisting of an aluminum-polyester foil combined with a high-density(≥90%coverage)tinned copper braid

Outer Jacket:Heavy-duty,automotive-grade jacket with superior resistance to abrasion,cuts,chemicals,and flame propagation(Low Smoke Zero Halogen-LSZH)

Minimum Bending Radius:Typically 8x cable outer diameter

DC Resistance:≤0.268Ω/km at 20°C

Core Performance Features

Electrical Efficiency&Power Integrity

Extremely low DC resistance minimizes voltage drop and energy loss over distance,crucial for vehicle range and fast-charging efficiency.

Optimized conductor geometry ensures stable power delivery under peak load conditions,such as acceleration and regenerative braking.

High dielectric strength provides a significant safety margin above rated operating voltages.

Robust Mechanical&Environmental Durability

Advanced stranding technology provides remarkable flexibility for its size,enabling feasible routing through challenging vehicle chassis pathways.

Engineered to withstand severe and continuous vibration,mechanical shock,and stress typical in automotive environments.

Jacket and insulation materials offer excellent resistance to automotive fluids(oil,coolant,brake fluid),moisture,ozone,and UV exposure.

Integrated Safety&Reliability

Multi-layered construction provides robust defense against electrical shorts,ground faults,and insulation breakdown.

Effective containment of electromagnetic fields protects sensitive onboard electronics(infotainment,sensors,control units)from interference.

Flame-retardant properties with very low smoke and toxic fume emission enhance passenger safety in rare thermal events.

Superior Thermal Management

Materials and construction are designed to efficiently dissipate heat generated during high-current operation,preventing thermal runaway.

Maintains full mechanical and electrical properties across the entire specified temperature range,ensuring reliability in extreme climates.

Primary Applications

Main Power Distribution:Central backbone linking the high-voltage battery pack to the vehicle's primary junction box or Power Distribution Unit(PDU).

Traction Circuit:Direct connection from the main inverter to the electric traction motor(s).

DC Fast-Charging Pathway:Critical internal wiring from the charging port to the battery system for high-power charging(150kW+).

High-Capacity Auxiliary Systems:Power supply for extreme-performance auxiliary components.

Commercial&Heavy-Duty EVs:Essential for buses,trucks,and industrial vehicles with higher voltage and power requirements.

Charging Infrastructure:Internal power busbars and cables within high-power DC fast-charging stations.

Compliance&Standards

Designed and tested to meet or exceed the most stringent international standards,including:

Automotive:ISO 6722,ISO 19642,LV214(German Automotive Standard)

Electrical Safety:IEC 60502,UL 62/UL 5582(for applicable regions)

Flame&Material:UL 1685(Vertical Tray Flame Test),RoHS,REACH

EMC:Compliance with major OEM electromagnetic compatibility specifications.

Summary

The 70 mm²High-Voltage Cable represents the pinnacle of power transmission technology for new energy vehicles.It is the definitive solution for applications where maximum current,unwavering reliability,and absolute safety are non-negotiable.By balancing exceptional conductivity with robust physical protection and electromagnetic shielding,this cable is a foundational element enabling the high performance,rapid charging,and extended range of next-generation electric mobility.