New Energy Power parts Motor controller to motor grounding wire RQ82025120QA120

Built to handle the high-current grounding demands of new energy motor systems, this grounding wire delivers exceptional electrical performance. The conductor core is made of 99.99% pure stranded copper (196 individual strands, 0.5mm diameter each) with a conductivity rating of ≥98% IACS (International Annealed Copper Standard), minimizing grounding resistance (≤0.003Ω/m at 20℃)—critical for diverting fault currents (up to 1500A peak) away from sensitive components. The 50mm² cross-sectional area supports continuous current of 200A, exceeding the maximum grounding current requirements of most 400V/800V motor controllers. Unlike aluminum conductors, pure copper offers superior thermal conductivity, avoiding overheating during fault conditions. This high-conductivity design ensures rapid, reliable grounding, preventing voltage surges that could damage the motor controller, drive motor, or BMS (Battery Management System)

Designed to endure the harsh conditions of new energy truck engine bays—including high temperatures, moisture, and chemical exposure—the grounding wire features a robust protective structure. The conductor is insulated with a 2.5mm-thick cross-linked polyethylene (XLPE) layer, which withstands continuous temperatures of -40℃ to 125℃ and resists degradation from engine oil, coolant, and road salt. The outer jacket is made of flame-retardant PVC (UL94 V-0 rating), providing additional mechanical protection against abrasion, cuts, and UV radiation (tested to 2000 hours of UV exposure with no cracking). The terminals are plated with 10μm-thick tin, preventing corrosion and ensuring low contact resistance (≤0.001Ω) even after 5000 cycles of thermal expansion. This multi-layer protection ensures the wire maintains electrical integrity for over 8 years in diverse operating environments

Engineered to resist the constant vibration of new energy truck powertrains (5-2000Hz, compliant with ISO 16750-3), the grounding wire maintains stable performance under dynamic conditions. The stranded copper core’s flexible structure (minimum bend radius: 30mm) absorbs vibration without conductor fatigue, avoiding breakage or loosening of the terminal connection. The terminal-cable crimp joint is reinforced with heat-shrinkable tubing (adhesive-lined, IP67-rated), creating a waterproof seal that prevents moisture intrusion and enhances mechanical strength—withstanding pull forces of up to 500N without separation. Additionally, the wire is equipped with stainless steel mounting clips (spaced 300mm apart) that secure it to the chassis, preventing contact with moving parts or hot components (e.g., motor housings). This vibration-resistant design reduces maintenance needs and ensures consistent grounding performance over the vehicle’s lifespan

Designed for efficient, safe installation, the grounding wire features user-friendly design elements and complies with new energy vehicle safety standards. The pre-crimped terminals (with captive washers) eliminate the need for on-site crimping tools, allowing technicians to complete installation in 15 minutes or less. The wire is marked with length indicators and polarity labels (“MC” for motor controller, “M” for motor) to prevent incorrect connection, reducing the risk of electrical faults. All components comply with IEC 60245 (insulated cables) and ISO 6469-3 (electric vehicle safety) standards, ensuring compatibility with high-voltage systems and meeting global safety certifications. The package includes 2 M8 lock nuts (grade 8.8, zinc-plated) and a torque specification sheet (recommended torque: 25-30N·m), ensuring proper terminal tightening and low contact resistance. This easy installation design reduces labor costs and minimizes truck downtime for fleet operators